PURSUANT TO RULE NO. 424(b)(1)
                                                              FILE NO. 333-47376



                                8,000,000 Shares

                    [MULTILINK TECHNOLOGY CORPORATION LOGO]

                              Class A Common Stock

                                 ------------

   Prior to this offering, there has been no public market for our Class A
common stock. The initial public offering price is $9.00 per share. We have
been approved to list our Class A common stock on The Nasdaq National Market
under the symbol "MLTC."

   The underwriters have an option to purchase a maximum of 1,200,000
additional shares to cover over-allotments of shares.

   Investing in our Class A common stock involves risks. See "Risk Factors" on
page 5.



                                                          Underwriting
                                             Price to     Discounts and   Proceeds to
                                              Public       Commissions     Multilink
                                            -----------   -------------   -----------
                                                                 
Per Share..................................    $9.00          $0.63          $8.37
Total...................................... $72,000,000    $5,040,000     $66,960,000


   Delivery of the shares of Class A common stock will be made on or about June
26, 2001.

   Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if
this prospectus is truthful or complete. Any representation to the contrary is
a criminal offense.

Credit Suisse First Boston

                    Salomon Smith Barney

                                                      Thomas Weisel Partners LLC

                 The date of this prospectus is June 20, 2001.


                              [inside front cover]

   The inside front cover page of the prospectus starts with the Multilink name
and logo in the upper left corner of the page. The logo is a square with a
squiggly line across it. The name is printed in two lines to the right of the
square, with "Multilink" on the first line and "Technology Corporation" on the
second.

   The background of the page is an enlarged picture of a circuit on a daughter
board. In front of the board are three globes of the Earth each slightly
overlapping the next, placed horizontally across the middle of the page.

   Running vertically near the right side of the page are four ovals, each
containing a photograph(s) of a Multilink product. Starting from the top, the
first oval has two pictures of integrated circuits of different sizes, the
second a daughter board, the third two modules of different sizes, the fourth
and last another daughter board of a different design than the previous
daughter board.

   Toward the bottom left of the page and overlapping the leftmost of the
globes is a depiction of a fiber optic strand. Above that, and somewhat to the
left of the center of the page, are the words "Advanced Component Solutions for
High-Speed Optical Networks" divided into four horizontal lines. Below this
phrase and close to the horizontal center of the page is the following
sentence, divided into six lines and in a font approximately half the size of
the previous phrase: "Multilink designs, develops and markets advanced
integrated circuits, modules and higher-level assemblies that enable next
generation optical networking systems."


                                 ------------

                               TABLE OF CONTENTS



                                                                          Page
                                                                          ----
                                                                       
Prospectus Summary.......................................................   1
Risk Factors.............................................................   5
Special Note Regarding Forward-
 Looking Statements......................................................  18
Use of Proceeds..........................................................  19
Dividend Policy..........................................................  19
Capitalization...........................................................  20
Dilution.................................................................  21
Selected Consolidated Financial Data.....................................  22
Management's Discussion and Analysis of Financial Condition and Results
 of Operations...........................................................  24
Business.................................................................  33



                                                                            Page
                                                                            ----
                                                                         
Management.................................................................  46
Certain Transactions.......................................................  58
Principal Shareholders.....................................................  60
Description of Capital Stock...............................................  62
Shares Eligible for Future Sale............................................  63
U.S. Federal Tax Considerations for Non-U.S. Holders.......................  66
Underwriting...............................................................  69
Notice to Canadian Residents...............................................  72
Legal Matters..............................................................  73
Experts....................................................................  73
Additional Information.....................................................  73
Index to Consolidated Financial
 Statements................................................................ F-1

                                 ------------

   You should rely only on the information contained in this document or to
which we have referred you. We have not authorized anyone to provide you with
information that is different. This document may only be used where it is legal
to sell these securities. The information in this document may only be accurate
on the date of this document.



                     Dealer Prospectus Delivery Obligation

   Until July 15, 2001 (25 days after the commencement of this offering), all
dealers that effect transactions in these securities, whether or not
participating in this offering, may be required to deliver a prospectus. This
is in addition to the dealer's obligation to deliver a prospectus when acting
as an underwriter and with respect to unsold allotments or subscriptions.


                               PROSPECTUS SUMMARY

   This summary highlights information that we present more fully elsewhere in
this prospectus. You should read the entire prospectus carefully.

                        Multilink Technology Corporation

   We design, develop and market advanced integrated circuits, modules and
higher-level assemblies that enable next generation optical networking systems.
Our products address the markets for DWDM and SONET/SDH optical transport
equipment. We focus exclusively on the fastest commercially available speeds of
OC-192, or 10 gigabits, or billions of bits per second, or higher and are in
the early stages of developing products designed to address future systems that
may operate at speeds of OC-768, or 40 gigabits per second. We seek to be first
to develop innovative components that allow communications equipment
manufacturers to rapidly build and deliver high performance fiber optic systems
more quickly and with more functionality and greater performance than their
competitors.

   We outsource semiconductor fabrication and focus our efforts on the design,
development and marketing of our products. We work closely with our customers
to design and deliver integrated product solutions utilizing our semiconductor,
circuit design and systems level expertise. We sell our products to leading and
emerging communications equipment manufacturers that develop high-speed optical
networking systems. Our customers include Alcatel, Ciena, Cisco, JDS Uniphase,
Lucent, Marconi, Nortel, ONI, Optimight, Sycamore and TyCom.

   DWDM, or dense wavelength division multiplexing, is a technology that
increases the capacity of existing fiber optic networks by combining multiple
light beams of information, each at a different wavelength, or channel, onto a
single strand of optical fiber. SONET/SDH, or Synchronous Optical
Network/Synchronous Digital Hierachy, are the standards, or protocols, for the
transmission of communications traffic over optical fiber. As communications
equipment manufacturers develop optical networking systems that enable higher
transmission speeds and deploy DWDM technology to increase bandwidth, they must
integrate a greater number of complex components that generate, manipulate,
transmit and receive electrical and optical signals. These components include
integrated circuits, modules and higher-level assemblies and are becoming
increasingly important for the manufacture of optical networking systems. The
need for communications equipment manufacturers to focus on their core
competencies and meet critical time-to-market requirements, along with the
complexities associated with the design and development of state-of-the-art
components, have caused these manufacturers to increasingly rely upon
sophisticated component suppliers.

   We believe we address communications equipment manufacturers' current needs
by providing our customers with several key benefits, including the following:

   Sophisticated Products Developed Utilizing Systems Level Expertise. We
provide sophisticated products that meet the requirements of next generation
optical networking systems. Our system architects and design engineers have a
thorough understanding of high-bandwidth optical networking systems, which
enables us to anticipate and develop cost-effective next generation component
solutions for our customers. Our products incorporate unique circuit designs
that enable specific system level functions.

   High-Speed Products that Meet Next Generation Optical Transmission
Requirements. We have an in-depth understanding of high performance
semiconductor and advanced process technologies. Understanding these
technologies enables us to design high-speed analog, digital and mixed-signal
integrated circuits and modules that operate at speeds of 10 gigabits per
second or higher. We design our products utilizing the optimal process
technology for a particular function or product, such as Gallium Arsenide, or
GaAs, Complementary Metal Oxide Semiconductor, or CMOS, and Silicon Germanium,
or SiGe. GaAs, CMOS and SiGe are

                                       1


semiconductor process technologies used to manufacture different products and
enable product functions, based upon matching different material compositions
to the needs of particular products. We believe that this flexibility is unique
and allows us to provide optimal solutions to our customers, resulting in the
rapid introduction of high-speed, next generation optical networking systems.

   High Level of Component Integration. Our high level of component integration
reduces the cost and complexity of our customers' optical networking systems.
When we are working with a customer that is developing and validating a new
system that incorporates an important new function not commercially available
from other sources, we first provide a module-based component composed of
multiple discrete integrated circuits. The module is designed as an integrated
package that can be seamlessly placed into a system, providing immediate
functionality. As the system transitions to high volume production, we
collaborate with the customer to increase our solution's level of component
integration, moving from a module-based solution to a multi-chip or single-chip
solution.

   Faster Time-to-Market. Time-to-market has become an important competitive
factor for communications equipment manufacturers. Through our systems level
and process technology expertise and our integration capabilities, we develop
sophisticated products that enable our customers to meet their time-to-market
requirements.

   Our objective is to become the leading global supplier of high value
component solutions for optical networking systems. Key elements of our
strategy include:

  . leveraging core competencies to rapidly introduce products that enable
    next generation optical systems;

  . expanding our customer relationships and the breadth of our customer
    base;

  . maintaining and extending our technology leadership;

  . pursuing strategic acquisitions and strategic relationships; and

  . continuing to address both the core and metropolitan portions of the
    optical transport network.

   We were incorporated in July 1994. Our principal executive offices are
located at 300 Atrium Drive, 2nd Floor, Somerset, New Jersey 08873, and our
telephone number is (732) 537-3700. The address of our website is www.mltc.com.
Information on our website does not constitute a part of this prospectus.

   We have applied for trademark protection for our "MLTC" mark. This
prospectus contains product names, trade names and trademarks of our company
and other entities.

                                       2


                                  The Offering


                                                                 
 Class A common stock offered....................... 8,000,000 shares

 Common stock to be outstanding after this offering:

        Class A common stock........................ 37,319,483 shares
        Class B common stock........................ 28,000,000 shares
                                                     -----------------
            Total................................... 65,319,483 shares
                                                     =================



 Voting rights...................................... Holders of Class A
                                                     common stock are
                                                     entitled to one vote
                                                     per share on all
                                                     matters submitted to
                                                     a vote of our
                                                     shareholders. Holders
                                                     of Class B common
                                                     stock are entitled to
                                                     ten votes per share
                                                     on all matters
                                                     submitted to a vote
                                                     of our shareholders.
                                                     After this offering,
                                                     holders of Class B
                                                     common stock will
                                                     control 88.3% of the
                                                     outstanding voting
                                                     power of our capital
                                                     stock.
 Other rights....................................... Except as to voting
                                                     and conversion
                                                     rights, each class of
                                                     common stock has the
                                                     same rights. Each
                                                     share of Class B
                                                     common stock is
                                                     convertible at the
                                                     option of the holder
                                                     into one share of
                                                     Class A common stock
                                                     and will, in general,
                                                     automatically convert
                                                     into one share of
                                                     Class A common stock
                                                     upon the sale or
                                                     other transfer to any
                                                     person or entity
                                                     other than a person
                                                     or entity that owns,
                                                     or controls an entity
                                                     that owns, Class B
                                                     common stock.
 Use of proceeds.................................... For general corporate
                                                     purposes, including
                                                     working capital and
                                                     potential
                                                     acquisitions.

 Nasdaq National Market symbol...................... MLTC


   The number of shares of our common stock to be outstanding after this
offering is based on 57,319,483 shares outstanding as of June 19, 2001 and
excludes:

  . 42,046,117 shares of Class A common stock issuable upon exercise of
    outstanding stock options at a weighted average exercise price of $2.06
    per share;

  . 7,037,406 shares of Class A common stock reserved for future issuance
    under our stock option plans;

  . 5,813,716 shares of Class A common stock issuable upon exercise of
    outstanding warrants with a weighted average exercise price of $3.53 per
    share; and

  . 2,071,652 additional shares of Class A common stock reserved for future
    issuance under our 2000 Employee Stock Purchase Plan.

                                  ------------

   Except as otherwise indicated, the information in this prospectus reflects:

  . the automatic conversion of our outstanding preferred stock into Class A
    common stock upon the completion of this offering; and

  . no exercise of the underwriters' over-allotment option.

                                       3



                      Summary Consolidated Financial Data
                     (in thousands, except per share data)



                                                                        Three Months Ended
                                  Year Ended December 31,                    March 31,
                          --------------------------------------------  -------------------
                           1996     1997     1998     1999    2000 (1)    2000    2001 (1)
                          -------  -------  -------  -------  --------  --------- ---------
                                                             
Statement of Operations
 Data:
Total revenues..........  $ 1,010  $ 1,541  $ 3,852  $20,395  $ 72,721  $  12,348 $  31,068
Gross profit, including
 deferred stock
 compensation...........      281      363    2,005   13,628    44,839      7,502    14,347
Research and
 development, excluding
 deferred stock
 compensation...........      279      650    2,219    8,779    24,624      3,848    12,536
Research and
 development-warrant
 issuance...............      --       --       --       --      6,375        --        --
Sales and marketing,
 excluding deferred
 stock compensation.....       94      190      349    2,292     7,130      1,186     3,527
General and
 administrative,
 excluding deferred
 stock compensation.....      107      266      391    1,767     7,611      1,225     2,946
Deferred stock
 compensation...........      --       --       344      803     6,077        809     2,580
                          -------  -------  -------  -------  --------  --------- ---------
Operating income
 (loss).................     (199)    (743)  (1,298)     (13)   (6,978)       434    (7,242)
Net income (loss).......  $  (186) $  (805) $(1,488) $    25  $ (3,669) $     371 $  (4,451)
                          =======  =======  =======  =======  ========  ========= =========
Dividend related to
 warrant issuances......      --       --       --       --     (6,375)       --        --
Net income (loss)
 attributable to common
 shareholders...........  $  (186) $  (805) $(1,488) $   (23) $(10,139) $     347 $  (4,475)
                          =======  =======  =======  =======  ========  ========= =========
Net income (loss) per
 share:
 Basic..................  $ (0.01) $ (0.03) $ (0.05) $   --   $  (0.34) $    0.01 $   (0.15)
                          =======  =======  =======  =======  ========  ========= =========
 Diluted................  $ (0.01) $ (0.03) $ (0.05) $   --   $  (0.34) $    0.01 $   (0.15)
                          =======  =======  =======  =======  ========  ========= =========
Weighted average shares:
 Basic..................   30,000   30,000   30,000   30,000    30,000     30,000    30,060
                          =======  =======  =======  =======  ========  ========= =========
 Diluted................   30,000   30,000   30,000   30,000    30,000     67,539    30,060
                          =======  =======  =======  =======  ========  ========= =========
Pro forma net loss per
 share:
 Basic and diluted......                             $   --   $  (0.19)           $   (0.08)
                                                     =======  ========            =========
 Weighted average
  shares................                              39,520    54,226               57,177
                                                     =======  ========            =========




                                                     As of March 31, 2001(1)
                                                  -----------------------------
                                                                     Pro Forma
                                                  Actual  Pro Forma As Adjusted
                                                  ------- --------- -----------
                                                           
Balance Sheet Data:
Cash and cash equivalents........................ $20,877  $20,877   $ 86,802
Working capital..................................  34,917   34,917     99,677
Total assets.....................................  90,999   90,999    155,309
Long-term obligations--net of current portion....   1,390    1,390      1,390
Redeemable convertible preferred stock...........  55,097      --         --
Total shareholders' equity.......................   7,784   62,881    127,641

- ------------------
(1) As restated, see note 15 to the consolidated financial statements.

   The pro forma balance sheet data above reflect the automatic conversion of
our outstanding preferred stock into Class A common stock upon the completion
of this offering. The pro forma as adjusted balance sheet data gives effect to
our receipt of the net proceeds from the sale of 8,000,000 shares of Class A
common stock in this offering, after deducting underwriting discounts and
commissions and estimated offering expenses.

   See note 2 of notes to consolidated financial statements for an explanation
of the determination of the number of shares used in computing net income
(loss) per share data.


                                       4


                                  RISK FACTORS

   This offering and any investment in our Class A common stock involves a high
degree of risk. You should carefully consider the risks described below and all
other information in this prospectus before deciding whether to purchase our
Class A common stock.

                         Risks Relating to Our Business

Our quarterly revenues and operating results have fluctuated in the past and
may continue to fluctuate because of a number of factors, any one of which
could adversely affect our stock price.

   Our quarterly revenues and operating results have fluctuated in the past and
may continue to fluctuate significantly from quarter to quarter in the future.
It is possible that in future periods our revenues and operating results could
fall below the expectations of securities analysts or investors, which could
cause the market price of our Class A common stock to decline. Some of the
factors that affect our quarterly revenues and operating results, but which are
difficult to control or predict are:

  . the reduction, rescheduling or cancellation of orders by any of our
    customers or prospective customers;

  . fluctuations in manufacturing yields and inventory levels;

  . the availability of external foundry capacity, purchased parts and raw
    materials;

  . our ability to introduce new products and technologies on a timely basis;

  . the announcement or introduction of new products and technologies by our
    competitors;

  . competitive pressures on selling prices;

  . the amounts and timing of costs associated with warranties and product
    returns;

  . the amounts and timing of investments in research and development;

  . market acceptance of our products and of our customers' products;

  . the ability of our customers to obtain components from their other
    suppliers;

  . costs associated with acquisitions and the integration of acquired
    operations;

  . general communications and semiconductor industry conditions; and

  . general economic conditions.

A few customers account for a majority of our sales, and the loss of one or
more key customers could significantly reduce our revenues and any profits.

   Historically, a relatively small number of customers has accounted for a
majority of our revenues. Our three largest customers accounted for
approximately 75% of our revenues for the three months ended March 31, 2001,
73% of our revenues in 2000 and 74% of our revenues in 1999. Our top three
customers for the three months ended March 31, 2001 were Alcatel, TyCom and
Cisco, representing approximately 49%, 16% and 10% of our revenues,
respectively. Our top three customers in 2000 were Lucent, Alcatel and Cisco,
representing approximately 34%, 28% and 11% of our revenues, respectively. Our
top three customers in 1999 were Lucent, Alcatel and TyCom, representing
approximately 36%, 20% and 18% of our revenues, respectively. We anticipate
that relatively few customers will continue to account for a significant
portion of our revenues. A reduction, delay or cancellation of orders from one
or more significant customers or the loss of one or more key customers in any
period could significantly reduce our revenues and any profits.

We have incurred net losses in the past and may incur net losses in the future.

   We incurred net losses of $0.8 million in 1997 and $1.5 million in 1998. We
had net income of $24,540 in 1999. We had net losses of $3.7 million in 2000
and $4.5 million for the three months ended March 31, 2001. We expect to
continue to incur amortization of deferred stock compensation and to increase
our expenses for

                                       5


research and development in the next few years. Consequently, our ability to
achieve and maintain profitability would be materially affected if we fail to
significantly increase our revenues.

Failure to effectively manage our anticipated growth and expansion could place
a significant strain on our limited personnel and other resources and could
adversely affect our business and operating results.

   We have grown rapidly in the last year and expect to continue to grow in
future periods. Our current organizational structure and systems are not
adequate for our expected growth plans. To manage expanded operations
effectively, we must continue to improve our operational, financial and
management systems and successfully hire, train, motivate and manage our
employees. We also plan to expand our general administration capabilities to
address the increased reporting and other administrative demands that will
result from our becoming a public company. In addition, the expansion of our
manufacturing requirements and our ability to outsource our manufacturing needs
in the future will require significant additional management, technical and
administrative resources. We cannot be certain that we will be able to
effectively manage our growth.

Our future success depends on the continued service of our engineering,
technical and key management personnel and our ability to identify, hire and
retain additional engineering, technical and key management personnel, and our
failure to hire and retain such personnel would be harmful to our ongoing
operations and business prospects.

   There is intense competition for qualified personnel in our industry,
particularly for engineers and senior level management. Loss of the services
of, or failure to recruit, engineers or other technical and key management
personnel could be significantly detrimental to our product and process
development programs and adversely affect our business and operating results.
We may not be able to continue to attract and retain engineers or other
qualified personnel necessary for the development of our products and business
or to replace engineers or other qualified personnel who may leave us in the
future. Our anticipated growth is expected to place increased demands on our
resources and likely will require the addition of new management personnel.

Our future success depends in part on the continued service of our key
executives, and the loss of any of these key executives could adversely affect
our business and operating results.

   Our success depends in part upon the continued service of our executive
officers, particularly Dr. Richard N. Nottenburg, our President, Chief
Executive Officer and Co-Chairman of the Board, and Dr. Jens Albers, our
Executive Vice President and Co-Chairman of the Board. Neither Dr. Nottenburg
nor Dr. Albers has an employment or non-competition agreement with us. The loss
of either of these key individuals would be detrimental to our ongoing
operations and prospects.

Several of our key personnel are relatively new and must be integrated into our
organization. Our failure to integrate these individuals could adversely affect
our business.

   Several of our key personnel have recently joined us, including Eric M.
Pillmore, our Chief Financial Officer, who joined us in July 2000, Ron
Krisanda, our Senior Vice President of Operations, who joined us in November
2000 and Craig S. Lewis, our Senior Vice President of Sales, who joined us in
January 2001. Therefore, there has been little or no opportunity to evaluate
the effectiveness of our executive management team as a combined unit. Our
future performance will depend in part on our ability to successfully integrate
our newly hired executive officers and key personnel into our management team,
and our ability to develop an effective working relationship among management.

                                       6


We sell substantially all of our products based on individual purchase orders,
and we cannot predict the size or timing of our orders. Our failure to
effectively plan production levels and inventory could materially harm our
business and operating results.

   We sell substantially all of our products based on individual purchase
orders, rather than long-term contracts. As a result, our customers generally
can cancel or reschedule orders on short notice and are not obligated to
purchase a specified quantity of any product. For example, we had a significant
order cancellation in the first quarter of 2001. We cannot assure you that our
existing customers will continue to place orders with us, that orders by
existing customers will be repeated at current or historical levels or that we
will be able to obtain orders from new customers. We cannot predict the size,
timing or terms of incoming purchase orders; therefore, decreases in the number
or size of orders or the development of customer orders with new terms may
adversely affect our business and operating results.

   Because we do not have substantial noncancellable backlog, we typically plan
our production and inventory levels based on internal forecasts of customer
demand that are highly unpredictable and can fluctuate substantially. In
anticipation of long lead times to obtain certain inventory and materials, we
order materials in advance of anticipated customer sales. This advance ordering
might result in excess inventory levels or unanticipated inventory write-downs
if our customers cancel orders or change the specifications for their orders.
If we are unable to plan inventory and production levels effectively, our
business and operating results could be materially harmed.

We will lose significant customer sales and may not be successful if customers
and prospective customers do not qualify our products to be designed into their
systems.

   Because our products must function as part of a larger system or network,
our customers often undertake extensive qualification processes prior to
placing large product orders. Once communications equipment manufacturers
decide to use a particular supplier's products or components, they incorporate
those products or components into their system design, which are known as
design-wins. Suppliers who fail to achieve design-wins are unlikely to make
sales to those customers for particular projects until at least the adoption of
future redesigned systems. Even then, many companies may be reluctant to
incorporate entirely new products into their new system designs, as this could
involve significant additional redesign efforts. If we fail to achieve design-
wins we will lose the opportunity for significant sales to those customers for
a lengthy period of time. Although a design-win increases the likelihood that
our products will be incorporated into the systems of our customers or
prospective customers, it does not obligate that customer or prospective
customer to purchase specified quantities of our products.

Our products are incorporated into sophisticated systems, and defects may be
discovered only after full deployment, which could seriously harm our business.

   Our products are complex and are designed to be deployed in large quantities
across sophisticated networks. Because of the nature of our products, they can
only be fully tested when completely deployed in large networks with high
amounts of traffic. Our customers may discover errors or defects in our
products, or our products may not operate as expected, after they have been
fully deployed. If our products have defects or do not operate as expected, we
could experience:

  . loss of, or delay in, revenues and loss of market share;

  . loss of existing customers;

  . failure to attract new customers or achieve market acceptance for our
    products;

  . diversion of development resources;

  . increased service and warranty costs;

  . legal actions by our customers;

                                       7


  . increased insurance costs; and

  . damage to our reputation and customer relationships.

   The occurrence of any of these problems could seriously harm our business
and result in decreased revenues and increased operating expenses. Defects,
integration issues or other performance problems in our products could result
in financial or other damages to our customers or could negatively affect
market acceptance for our products.

We compete in highly competitive markets, against competitors with longer
operating histories, greater name recognition, greater resources or larger
market capitalizations. Our failure to compete effectively would harm our
business.

   The markets in which we compete are highly competitive. Our ability to
compete successfully in our markets depends on a number of factors, including:

  . product time-to-market;

  . product performance;

  . product price;

  . product quality;

  . product reliability;

  . success in designing and subcontracting the manufacture of new products
    that implement new technologies;

  . market acceptance of our competitors' products;

  . efficiency of production;

  . expansion of production of our products for particular systems
    manufacturers; and

  . customer support and reputation.

   We compete primarily against Agere, Applied Micro Circuits, Conexant, Giga
(acquired by Intel), Infineon, JDS Uniphase, Maxim, Nortel (microelectronics
division), NTT Electronics, Philips, PMC-Sierra and Vitesse. Many of our
competitors operate their own fabrication facilities and have longer operating
histories and a greater presence in key markets, greater name recognition,
access to larger customer bases and significantly greater financial, sales and
marketing, distribution, technical and other resources. As a result, our
competitors may be able to adapt more quickly to new or emerging technologies,
changes in customer requirements or devote greater resources to the promotion
and sale of their products. In addition, our competitors may develop
technologies that more effectively address the transmission of digital
information through existing analog infrastructures at a lower cost, thereby
rendering our products obsolete. Our competitors that have large market
capitalizations or cash reserves are also better positioned than we are to
acquire other companies, thereby obtaining new technologies or products. Any of
these acquisitions could give our competitors a strategic advantage that could
adversely affect our business, financial condition and results of operations.

   Current and potential competitors have established or may establish
financial or strategic relationships among themselves or with existing or
potential customers, resellers or other third parties. Accordingly, it is
possible that new competitors or alliances forged by competitors could emerge
and rapidly acquire significant market share.

                                       8


We must incur substantial research and development expenses. If we do not have
sufficient resources to invest in research and development, our business could
be seriously harmed.

   In order to remain competitive, we must continue to make substantial
investments in research and development to develop new and enhanced products.
We cannot assure you that we will have sufficient resources to invest in the
development of new and enhanced technologies and competitive products. Our
failure to continue to make sufficient investments in research and development
programs could significantly reduce our revenue growth and harm our business.
Additionally, our products have a short life cycle; therefore, we have limited
time to capitalize upon our research and development investments and generate
revenues. We cannot assure you that our research and development investments
will result in revenues in excess of our expenses, if at all, or will result in
any commercially accepted products.

We incur research and development expenses in advance of obtaining access to
the required technology, and as a result, these investments may not result in
the production of any marketable products.

   We often incur substantial research and development expenses for the
development of products incorporating emerging process technologies. We make
these substantial investments in the product design stage and prior to gaining
access to these process technologies. Failure to gain access to these process
technologies could prevent our products' development and commercialization and
materially harm our business.

We may not be able to effectively compete with IBM for sales of products that
we jointly develop.

   We have a joint development agreement with International Business Machines,
or IBM, pursuant to which we jointly develop integrated circuits. Under this
agreement, both parties can sell our jointly developed products to third
parties. Because IBM is a larger company, with a longer operating history and
substantially greater resources, it may be able to attract more customers, and
we may not have the opportunity to sell the jointly developed products to those
customers.

We may need to make acquisitions in order to remain competitive in our market.
Our business or the value of your investment could be adversely affected as a
result of any potential acquisitions.

   To compete effectively, we may find it necessary to acquire additional
businesses, products or technologies. If we identify an appropriate acquisition
candidate, we may not be able to negotiate the terms of the acquisition
successfully, finance the acquisition or effectively integrate the acquired
business, products, technologies or personnel into our existing business and
operations. Further, completing a potential acquisition and integrating an
acquired business will cause significant diversions of management's time and
resources. If we consummate one or more significant acquisitions in which the
consideration consists of stock or other securities, the value of your
investment in our company could be significantly diluted. If we were to proceed
with one or more significant acquisitions in which the consideration included
cash, we could be required to use a substantial portion of our available cash,
including proceeds of this offering. In addition, we may be required to
amortize significant amounts of goodwill and other intangible assets in
connection with future acquisitions, which could significantly reduce our
operating and net income.

Our operating results are subject to fluctuations because of sales to foreign
customers.

   International sales accounted for approximately 41% of our revenues for the
three months ended March 31, 2001, 27% of our revenues in 2000 and 16% of our
revenues in 1999. International sales may continue to account for a significant
portion of our revenues, and as a result, we will be subject to certain risks
associated with international sales, including:

  . changes in regulatory requirements;

  . increases in tariffs and other trade barriers;

  . timing and availability of export licenses;

                                       9


  . political and economic instability;

  . difficulties in accounts receivable collections;

  . difficulties in staffing and managing foreign subsidiary and branch
    operations;

  . difficulties in managing distributors;

  . difficulties in obtaining governmental approvals for communications and
    other products;

  . foreign currency exchange fluctuations;

  . the burden of complying with a wide variety of complex foreign laws and
    treaties; and

  . potentially adverse tax consequences.

   We are subject to the risks associated with the imposition of legislation
and regulations relating to the import or export of high technology products.
We cannot predict whether quotas, duties, taxes or other charges or
restrictions upon the importation or exportation of our products will be
implemented by the United States or other countries. Some of our customer
purchase orders and agreements are governed by foreign laws, which may differ
significantly from U.S. laws. Therefore, we may be limited in our ability to
enforce our rights under these agreements and to collect damages, if awarded.

   Because sales of our products are denominated in U.S. dollars, increases in
the value of the U.S. dollar could increase the price of our products so that
they become more expensive to customers in the local currency of a particular
country, leading to a reduction in sales and profitability in that country.
Future international activity may result in increased foreign currency
denominated sales. Gains and losses on the conversion to U.S. dollars of
accounts receivable, accounts payable and other monetary assets and liabilities
arising from international operations may contribute to fluctuations in our
results of operations.

If we become subject to unfair hiring claims we could incur substantial costs
in defending ourselves or our management's attention could be diverted away
from our operations.

   Companies in our industry often hire individuals formerly employed by their
competitors. In such cases, these competitors frequently claim that the hiring
company has engaged in unfair hiring practices. We have received claims of this
kind in the past from our competitors, and we cannot assure you that we will
not receive claims of this kind in the future or that those claims will not
result in material litigation. We could incur substantial costs in defending
ourselves or our employees against such claims, regardless of the merits of the
claims. In addition, defending ourselves from such claims could divert the
attention of our management away from our operations.

                        Risks Relating to Manufacturing

Our dependence on TRW and other third-party manufacturing and supply
relationships could negatively impact the production of our products and
significantly harm our business.

   We do not own or operate manufacturing facilities necessary for the
production of most of our products. We rely on several outside foundries for
the manufacture and assembly of most of our products, and we expect this to
continue for the foreseeable future. Our mixed-signal products, which comprise
a significant portion of our current revenues, are based predominantly on
GaAs HBT wafers supplied by TRW. GaAs HBT is an advanced process technology
used to manufacture a semiconductor device that allows a bipolar transistor to
be fabricated on a GaAs material. TRW is our sole supplier of these wafers. We
have a wafer supply agreement with TRW, under which we do not have the
contractual right to obtain all the GaAs HBT wafers we require for the current
production of our mixed-signal products. Finding alternative sources for these
wafers will result in substantial delays in production and additional costs. To
date, we have no other wafer supply agreements with our other suppliers.

                                       10


   Our dependence upon third parties that manufacture, assemble, package or
supply components for our products may result in:

  . lack of assured semiconductor wafer supply and reduced control over
    delivery schedules and quality;

  . the unavailability of, or delays in obtaining access to, key process
    technologies;

  . limited control over manufacturing yields and quality assurance;

  . inadequate capacity during periods of excess demand;

  . inadequate allocation of production capacity to meet our needs;

  . increased costs of materials or manufacturing services;

  . difficulties selecting and integrating new subcontractors;

  . limited warranties on wafers or products supplied to us;

  . inability to take advantage of price reductions; and

  . misappropriation of our intellectual property.

Any one of these factors could adversely affect our business.

   While we believe we have good relations with our outside foundries and
suppliers, we cannot be certain that we will be able to maintain these
favorable relations. Additionally, because there is a limited number of
foundries and suppliers that can produce our products, establishing
relationships and increasing production with new outside foundries takes a
considerable amount of time. Thus, there is no readily available alternative
source of supply for our production needs. A manufacturing disruption, such as
a raw material shortage, experienced by TRW or any of our other outside
foundries and suppliers could impact the production of some of our products for
a substantial period of time. Our outside foundries' and suppliers' inability
to increase their production capacity or to continue to allocate capacity to
manufacture our components could also limit our ability to grow our business.

We may face production delays if the subcontractors we use to manufacture our
wafers or products discontinue the manufacturing processes needed to meet our
demands or fail to advance the process technologies needed to manufacture our
products.

   Our wafer and product requirements represent a small portion of the total
production of the third-party foundries that manufacture our products. As a
result, we are subject to the risk that our external foundries may not continue
to devote resources to the continued development and improvement of the process
technologies on which the manufacturing of our products are based. This could
increase our costs and harm our ability to deliver our products on time.

Our operating results substantially depend on manufacturing output and yields,
which may not meet expectations.

   Manufacturing semiconductors requires manufacturing tools that are unique to
each product produced. If one of these unique manufacturing tools of our
outside foundries were damaged or destroyed, then the ability of these
foundries to manufacture the related product would be impaired and our business
would suffer. In addition, our manufacturing yields decline whenever a
substantial percentage of wafers must be rejected or significant portions of
each wafer are nonfunctional. Such declines can be caused by many factors,
including minute levels of contaminants in the manufacturing environment,
design imperfections, defects in masks used to print circuits on a wafer and
difficulties in the fabrication process. Many of these problems are difficult
to diagnose, are time consuming and expensive to remedy and can result in
shipment delays.

   Difficulties associated with adapting our technology and product design to
the proprietary process technology and design rules of our outside foundries
can lead to reduced yields. Since low yields may result

                                       11


from either design or process technology failures, yield problems may not be
effectively determined or resolved until an actual product exists that can be
analyzed and tested. As a result, yield problems may not be identified until
well into the production process, and resolution of yield problems may require
cooperation between ourselves and our manufacturers. In some cases this risk
could be compounded by the offshore location of some of our manufacturers,
increasing the effort and time required to identify, communicate and resolve
manufacturing yield problems. Manufacturing defects that we do not discover
during the manufacturing or testing process may lead to costly product recalls.
Difficulties in diagnosing and solving the complicated problems of assembling
these types of semiconductors could also reduce our yields.

If we are unable to commit to deliver sufficient quantities of our products to
satisfy our customers' needs, it may be difficult for us to attract new orders
and customers or we may lose current orders and customers.

   Our customers typically require that we commit to provide specified
quantities of products over a given period of time. We may be unable to deliver
sufficient quantities of our products for any of the following reasons:

  . our reliance on third-party manufacturers;

  . our limited infrastructure, including personnel and systems;

  . the limited availability of raw materials; and

  . competing customer demands.

If we are unable to commit to deliver sufficient quantities of our products to
satisfy a customer's anticipated needs, we may lose the order and the
opportunity for significant sales to that customer and may be unable to attract
new orders and customers.

Our business depends on the continued availability of raw materials and
advanced process technologies at reasonable prices. If adequate amounts of raw
materials or advanced process technologies are unavailable, our operating
results would be adversely affected.

   Highly specialized raw materials and advanced process technologies are
needed for the production of our products. In some cases, there are only two or
three suppliers of such materials and technologies in the world. We depend on
the continued availability of these materials and technologies at reasonable
prices. We may not be able to fulfill customer purchase requests if there is a
substantial increase in the price for these materials or if our outside
suppliers cannot provide adequate quantities of raw materials for the
production of our products. This may result in decreased revenues and adversely
affect our operating results.

                         Risks Relating to Our Industry

Slow growth in the build-out of the communications infrastructure and
uncertainties in network service providers' purchasing programs, as well as
consolidation in the network service provider industry, may adversely affect
our future business and operating results.

   Our business prospects depend substantially on the continued build-out of
the communications infrastructure. A number of network service providers have
recently announced plans to curtail the level of their capital expenditures on
their infrastructure build-out, which could significantly reduce the demand for
our products by communications equipment manufacturers. This recent slowdown
has caused our revenues and backlog to grow less rapidly than they otherwise
would have. In addition, network service providers typically purchase network
equipment pursuant to multi-year purchasing programs that may increase or
decrease annually as the providers adjust their capital equipment budgets and
purchasing priorities. Network service providers' curtailment or termination of
purchasing programs or decreases in capital budgets, including with respect to
undersea cable transmission systems which constitute a significant portion of
our sales, could

                                       12


materially and adversely affect our revenue and business prospects. This is
particularly true if significant and unanticipated by us and our communications
equipment manufacturer customers. Additionally, consolidation among network
service providers may cause delays in the purchase of our products and a
reexamination of strategic and purchasing decisions by these network service
providers and our current and potential communications equipment manufacturer
customers, which could harm our business and financial condition.

The markets we serve are subject to rapid technological change, and if we are
unable to develop and introduce new products, our revenues could stop growing
or could decline.

   The markets we serve frequently undergo transitions in which products
rapidly incorporate new features and performance standards on an industry-wide
basis. Products for communications applications, as well as for high-speed
computing applications, are based on continually evolving industry standards. A
significant portion of our revenues in recent periods has been, and is expected
to continue to be, derived from sales of products based on existing
transmission standards. However, our ability to compete in the future will
depend on our ability to identify and ensure compliance with evolving industry
standards.

   The emergence of new industry standards could render our products
incompatible with products developed by major communications equipment
manufacturers. If our products are unable to support the new features, the
enhanced integration of functions or the performance levels required by
communications equipment manufacturers in these markets, we would likely lose
business from an existing or potential customer. Moreover, we would not have
the opportunity to compete for new business until the next product transition
occurs. As a result, we could be required to invest significant time and effort
and to incur significant expense to redesign our products to ensure compliance
with relevant standards. If our products are not in compliance with prevailing
industry standards for a significant period of time, we could miss
opportunities to achieve crucial design-wins.

   Moreover, to improve the cost-effectiveness and performance of our products,
we may be required to transition one or more of our products to process
technologies with smaller components, other materials or higher speeds. We may
not be able to improve our process technologies and develop or otherwise gain
access to new process technologies in a timely or cost-effective manner. We
could record expenses or charges associated with such a transition. For
example, we wrote off $4.3 million of our inventory in the first quarter of
2001, which resulted from a transition from certain GaAs products to SiGe
products and an order cancellation, reducing our gross profit.

   These risks may lead to increased costs or delay product delivery, which
would harm our profitability and customer relationships. Consequently, our
revenues could be significantly reduced for a substantial period if we fail to
develop products with required features or performance standards, if we
experience a delay as short as a few months in bringing a new product to
market, or if our customers fail to achieve market acceptance of their
products.

We operate in the highly cyclical semiconductor industry, and any downturns in
the industry could materially and adversely effect our business and operating
results.

   The semiconductor industry has experienced significant downturns, often in
connection with, or in anticipation of, maturing product cycles (of both
semiconductor companies' and their customers' products) and declines in general
economic conditions. These downturns have been characterized by diminished
product demand, production overcapacity, high inventory levels and accelerated
erosion of average selling prices. Any future downturns could have a material
adverse effect on the growth of our business and revenues. From time to time,
the semiconductor industry also has experienced periods of increased demand and
production capacity constraints. We may experience substantial changes in
future operating results due to general semiconductor industry conditions,
general economic conditions and other factors.

                                       13


Necessary licenses of third-party technology may not be available to us or may
be prohibitively expensive, which could adversely affect our ability to produce
and sell our products.

   From time to time we may be required to license technology from third
parties to develop new products or product enhancements. We cannot assure you
that third-party licenses will be available to us on commercially reasonable
terms, if at all. Our inability to obtain any third-party license required to
develop new products and product enhancements could require us to obtain
substitute technology of lower quality or performance standards or at greater
cost, if at all, any of which could seriously harm our ability to sell our
products.

Our failure to protect our intellectual property adequately could adversely
affect our business.

   Our intellectual property is critical to our ability to successfully design
products for the optical networking systems market. We currently have one U.S.
patent issued and three U.S. patent applications pending. We cannot assure you
that our pending patent applications or any future applications will be
approved. Further, we cannot assure you that any issued patents will provide us
with competitive advantages or will not be challenged by third parties, or that
if challenged, will be found to be valid or enforceable. Additionally, we
cannot assure you that the patents of others will not have an adverse effect on
our ability to do business. Furthermore, others may independently develop
similar products or processes, duplicate our products or processes or design
around any patents that may be issued to us.

   We rely on the combination of maskwork protection under the Semiconductor
Chip Protection Act of 1984, trademarks, copyrights, trade secrets, employee
and third-party nondisclosure agreements and licensing arrangements to protect
our intellectual property. Despite these efforts, we cannot be certain that
others will not independently develop substantially equivalent intellectual
property or otherwise gain access to our intellectual property, or disclose
such intellectual property, or that we can meaningfully protect our
intellectual property.

We could be harmed by litigation involving patents and proprietary rights.

   The semiconductor industry is characterized by substantial litigation
regarding patent and other intellectual property rights. We may be accused of
infringing upon the intellectual property rights of third parties.
Additionally, we have indemnification obligations to our customers with respect
to intellectual property infringement claims by third parties. Such
intellectual property infringement claims by third parties or indemnification
claims by our customers could harm our business.

   Any litigation relating to the intellectual property rights of third
parties, whether or not determined in our favor or settled by us, could be
costly and could divert the efforts and attention of our management and
technical personnel. In the event of any adverse ruling in any litigation, we
could be required to:

  . pay substantial damages;

  . cease the manufacturing, use and sale of certain products;

  . discontinue the use of certain process technologies; and

  . obtain a license from the third-party claiming infringement, which might
    not be available on reasonable terms, if at all.

The communications industry is subject to U.S. and foreign government
regulations that could harm our business. Our failure to timely comply with
regulatory requirements, or obtain and maintain regulatory approvals, could
materially harm our business.

   The Federal Communications Commission, or FCC, has jurisdiction over the
entire communications industry in the United States and, as a result, our
products and our customers' products are subject to FCC rules and regulations.
Current and future FCC rules and regulations affecting communications services,
our products or our customers' businesses or products could negatively affect
our business. In addition, international

                                       14


regulatory standards could impair our ability to develop products in the
future. Delays caused by our compliance with regulatory requirements could
result in postponements or cancellations of product orders, which would harm
our business, results of operations and financial condition. Further, we cannot
be certain that we will be successful in obtaining or maintaining any
regulatory approvals that may, in the future, be required to operate our
business.

                        Risks Relating to this Offering

Technology company stock prices are especially volatile, and this volatility
may depress our stock price or lead to class action litigation.

   The stock market, and specifically the stock prices of technology companies,
have been very volatile. The market price of our shares of Class A common stock
may fluctuate significantly in response to a number of factors, beyond our
control, including:

  . changes in financial estimates by securities analysts;

  . announcements by us, our customers or our competitors;

  . changes in market valuations of similar companies;

  . changes in accounting rules and regulations; and

  . future sales of our common stock by our existing shareholders.

   As a result of this volatility, you may be unable to resell your shares at
or above the offering price.

   Securities class action litigation has often been brought against companies
that experience volatility in the market price of their securities. Litigation
brought against us could result in substantial costs to us in defending against
a lawsuit and management's attention could be diverted from our business.

Our securities have no prior market, and our stock price may decline after the
offering.

   Before this offering, there has not been a public market for our Class A
common stock, and an active public market for our Class A common stock may not
develop or be sustained after this offering. The initial public offering price
will be determined by negotiations between representatives of the underwriters
and us. After this offering, the market price of our Class A common stock may
fall below the initial public offering price.

If a significant number of shares become available for sale and are sold in a
short period of time, the market price of our stock could decline.

   If our shareholders sell substantial amounts of our common stock in the
public market following this offering, the market price of our Class A common
stock could fall. Based on shares outstanding as of June 19, 2001, upon
completion of this offering, we will have 65,319,483 shares of common
stock outstanding. Our shareholders are subject to agreements with the
underwriters that restrict their ability to transfer their stock for 180 days
from the date of this prospectus, subject to certain exceptions. For a detailed
description of these restrictions and exceptions, please see "Underwriting."
After these agreements expire, approximately 57,319,483 shares, as well as
additional shares issuable upon exercise of options, will become immediately
eligible for sale in the public market, subject to holding periods under
applicable law. For a detailed discussion of the shares eligible for future
sale, please see "Shares Eligible for Future Sale."

   In addition, under an Investors' Rights Agreement some of our current
shareholders have "demand" and/or "piggyback" registration rights in connection
with future offerings of our common stock. "Demand" rights enable shareholders
to demand that their shares be registered and may require us to file a
registration

                                       15


statement under the Securities Act at our expense. "Piggyback" rights require
us to notify the shareholders of our stock if we propose to register any of our
securities under the Securities Act, and grant such shareholders the right to
include their shares in the registration statement. All of our shareholders who
are parties to the Investors' Rights Agreement have agreed not to exercise
their registration rights until 180 days following the date of this prospectus
without the consent of Credit Suisse First Boston Corporation.

We have broad discretion in our use of the offering proceeds, and the
investment of these proceeds may not yield a favorable return.

   Our management has broad discretion over how the proceeds of this offering
are used and could spend these proceeds in ways with which our shareholders may
not agree. The proceeds may be invested in ways that do not yield favorable
returns.

As a new investor, you will experience immediate and substantial dilution in
the value of the Class A common stock.

   The initial public offering price of $9.00 per share is substantially higher
than the current book value per share of our outstanding common stock. If you
purchase shares of Class A common stock in this offering, you will incur
immediate and substantial dilution of approximately $5.57 per share in pro
forma net tangible book value. If the holders of outstanding options and
warrants exercise those options and warrants, you will incur further dilution.

Because existing shareholders own a large percentage of our voting shares, your
voting power may be limited.

   We currently have 28,000,000 shares of Class B common stock outstanding,
each of which entitles the holder to ten votes. Only Class A common stock will
be sold in this offering, with each share entitling the holder to one vote. All
of the Class B common stock is held by officers, directors or other persons or
entities owning 5% or more of the outstanding shares of our common stock.

   Following consummation of this offering, it is anticipated that our
executive officers, directors and their affiliates will beneficially own or
control shares representing 55.6% of the voting power of our outstanding
capital stock. Dr. Richard Nottenburg, as a result of his stock ownership and a
voting trust agreement with Dr. Jens Albers, will alone control 47.9% of the
outstanding voting power of our capital stock. In addition, persons and
entities owning more than 5% of our outstanding shares of common stock will, in
the aggregate, control 91.5% of the outstanding voting power of our capital
stock. As a result, our directors and 5% shareholders acting together will have
the ability to control all matters submitted to our shareholders for approval,
including the election and removal of directors and the approval of any merger,
consolidation or sale of all or substantially all of our assets. These
shareholders may make decisions that are adverse to your interests.

Our board of directors may issue, without shareholder approval, shares of
preferred stock that have rights and preferences superior to those of our
shares of common stock and that may prevent or delay a change of control.

   Our articles of incorporation provide that our board of directors may issue
new shares of preferred stock without shareholder approval. Some of the rights
and preferences of these shares of preferred stock would be superior to the
rights and preferences of shares of our common stock. Accordingly, the issuance
of new shares of preferred stock may adversely affect the rights of the holders
of shares of our common stock. In addition, the issuance of new shares of
preferred stock may prevent or delay a change of control of our company.

                                       16


We may need additional capital, which may not be available, and our ability to
grow may be limited as a result.

   We may be required, or could elect, to seek additional funding at any time
following this offering. We anticipate incurring significant expenses in
connection with increased research and development activities, and we may
engage in acquisitions. The hiring of additional personnel to support these
functions, including the expansion of our sales and marketing organizations,
will also require a significant commitment of resources. In addition, if the
market for our products develops at a slower pace than anticipated, or if we
fail to continue to expand our market share, we may continue to utilize
significant amounts of capital. If cash from available sources is insufficient,
or if cash is used for acquisitions or other unanticipated uses, we may need
additional capital sooner than anticipated. In the event we are required, or
elect, to raise additional funds, we may not be able to do so on favorable
terms, if at all.

                                       17


               SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

   This prospectus contains forward-looking statements within the meaning of
the federal securities laws that relate to future events or our future
financial performance. These statements involve known and unknown risks,
uncertainties and other factors that may cause our or our industry's actual
results, levels of activity, performance or achievements to be materially
different from any future results, levels of activity, performance or
achievements expressed or implied by the forward-looking statements. These
risks and other factors include those listed under "Risk Factors" and elsewhere
in this prospectus. In some cases, you can identify forward-looking statements
by terminology such as "may," "will," "should," "expects," "plans,"
"anticipates," "believes," "estimates," "predicts," "potential," "continue" or
the negative of these terms or other comparable terminology. In addition, these
forward-looking statements include, but are not limited to, statements
regarding the following:

  . anticipated development and release of new products;

  . anticipated sources of future revenues;

  . the expansion of our foundry or other manufacturing relationships;

  . potential future acquisitions;

  . anticipated expenditures for research and development, sales and
    marketing and general and administrative expenses; and

  . the adequacy of our capital resources to fund our operations.

   These statements are only predictions. In evaluating these statements, you
should specifically consider various factors, including the risks outlined
under "Risk Factors." Although we believe that the expectations reflected in
the forward-looking statements are reasonable, we cannot guarantee future
results, levels of activity, performance or achievements.

                                       18


                                USE OF PROCEEDS

   We will receive net proceeds from this offering of approximately
$64,760,000, using the initial public offering price of $9.00 per share and
after deducting underwriting discounts and commissions and estimated offering
expenses. If the underwriters exercise their over-allotment option in full, our
net proceeds will be approximately $74,804,000.

   The principal purposes of this offering are to obtain additional capital, to
create a public market for our Class A common stock and to facilitate future
access to public capital markets. As of the date of this prospectus, we have
not allocated the net proceeds of this offering to specific uses. We expect to
use the net proceeds primarily for general corporate purposes, including
working capital. The amounts we actually expend for working capital and other
purposes may vary significantly and will depend on a number of factors,
including the amount of our future revenues and other factors described under
"Risk Factors." We may also use a portion of the net proceeds to acquire
products, technologies or businesses that are complementary to our current and
future business and product lines. We currently have no commitments or
agreements with respect to any acquisition. Pending use of the net proceeds of
this offering, we intend to invest the net proceeds in interest-bearing,
investment-grade securities.

                                DIVIDEND POLICY

   We have never declared or paid any dividends on our capital stock. We
currently expect to retain any future earnings to fund the development and
growth of our business and do not anticipate paying any cash dividends for the
foreseeable future.

                                       19


                                 CAPITALIZATION

   The following table sets forth our capitalization as of March 31, 2001:

  . on an actual basis;

  . on a pro forma basis to give effect to the automatic conversion of all
    outstanding shares of preferred stock into Class A common stock upon the
    completion of this offering; and

  . on a pro forma as adjusted basis to reflect our receipt of the net
    proceeds from the sale of 8,000,000 shares of Class A common stock in
    this offering, after deducting estimated underwriting discounts and
    commissions and estimated offering expenses.



                                                      As of March 31, 2001
                                                 ---------------------------------
                                                                        Pro Forma
                                                 Actual(1)  Pro Forma  As Adjusted
                                                 ---------  ---------  -----------
                                                   (in thousands, except share
                                                              data)

                                                              
Cash and cash equivalents......................  $ 20,877   $ 20,877    $ 86,802
                                                 ========   ========    ========
Long-term obligations, net of current portion..  $  1,390   $  1,390    $  1,390
                                                 --------   --------    --------
Redeemable convertible preferred stock:
  Series A, $.0001 par value; 9,000,000 shares
   authorized, 1,711,640 shares issued and
   outstanding, actual; no shares authorized,
   issued and outstanding pro forma and pro
   forma as adjusted...........................    15,097        --          --
  Series B, $.0001 par value; 1,000,000 shares
   authorized, issued and outstanding, actual;
   no shares authorized, issued and outstanding
   pro forma and pro forma as adjusted.........    40,000        --          --
Shareholders' equity:
  Common stock, $.0001 par value:
  Class A; 200,000,000 shares authorized,
   2,107,083 shares issued and outstanding,
   actual; 200,000,000 shares authorized,
   29,223,483 shares issued and outstanding
   pro forma; 200,000,000 shares authorized,
   37,223,483 shares issued and outstanding pro
   forma as adjusted...........................       --           3           4
  Class B; 100,000,000 shares authorized,
   28,000,000 shares issued and outstanding,
   actual, pro forma and pro forma as
   adjusted....................................         3          3           3
  Additional paid-in-capital...................    40,628     95,722     160,481
  Deferred stock compensation..................   (15,624)   (15,624)    (15,624)
  Accumulated deficit..........................   (16,939)   (16,939)    (16,939)
  Accumulated other comprehensive loss.........      (284)      (284)       (284)
                                                 --------   --------    --------
    Total shareholders' equity.................     7,784     62,881     127,641
                                                 --------   --------    --------
        Total capitalization...................  $ 64,271   $ 64,271    $129,031
                                                 ========   ========    ========


   The share information above excludes the following as of March 31, 2001:

  . 39,628,997 shares of Class A common stock issuable upon exercise of
    outstanding stock options at a weighted average exercise price of $1.77
    per share;

  . 9,550,526 shares of Class A common stock reserved for future issuance
    under our stock option plans;

  . 5,813,716 shares of Class A common stock issuable upon exercise of
    outstanding warrants with a weighted average exercise price of $3.53 per
    share; and

  . 2,071,652 additional shares of Class A common stock reserved for future
    issuance under our 2000 Employee Stock Purchase Plan.
- ---------------------
(1) As restated, see note 15 to the consolidated financial statements.

                                       20


                                    DILUTION

   If you invest in our Class A common stock, your interest will be diluted to
the extent of the difference between the public offering price per share of our
Class A common stock and the pro forma as adjusted net tangible book value per
share of our Class A common stock after this offering. Our pro forma net
tangible book value as of March 31, 2001 was $62,756,000, or $2.15 per share.
Pro forma net tangible book value per share represents the amount of our total
tangible assets less total liabilities, divided by the pro forma number of
shares of common stock outstanding after giving effect to the automatic
conversion of all of our outstanding shares of preferred stock into shares of
Class A common stock.

   After giving effect to our sale of 8,000,000 shares of Class A common stock
in this offering and after deducting underwriting discounts and commissions and
estimated offering expenses, our pro forma as adjusted net tangible book value
as of March 31, 2001 would have been $127,516,000, or $3.43 per share. This
represents an immediate increase in pro forma net tangible book value of $1.28
per share to existing shareholders and an immediate dilution of $5.57 per share
to new investors of Class A common stock in this offering. The following table
illustrates this per share dilution:


                                                                   
   Initial public offering price..................................       $9.00
     Pro forma net tangible book value at March 31, 2001.......... $2.15
     Increase attributable to new investors.......................  1.28
                                                                   -----
   Pro forma as adjusted net tangible book value after this
    offering......................................................        3.43
                                                                         -----
   Dilution to new investors......................................        5.57
                                                                         =====


   The following table shows on a pro forma basis, as of March 31, 2001, the
number of shares of stock purchased from us, the total consideration paid to us
and the average price per share paid by the existing shareholders and by new
investors, before deducting underwriting discounts and commissions and
estimated offering expenses payable by us.



                             Shares Purchased  Total Consideration
                            ------------------ -------------------- Average Price
                              Number   Percent    Amount    Percent   Per Share
                            ---------- ------- ------------ ------- -------------
                                                     
   Existing Class A
    shareholders........... 29,223,483    45%  $ 55,768,000    44%      $1.91
   Existing Class B
    shareholders........... 28,000,000    43        125,300   --          .01
   New Class A investors...  8,000,000    12     72,000,000    56        9.00
                            ----------   ---   ------------   ---
     Total................. 65,223,483   100%  $127,893,300   100%
                            ==========   ===   ============   ===


   The above table and calculations exclude, as of March 31, 2001:

  . 39,628,997 shares of Class A common stock issuable upon exercise of
    outstanding stock options at a weighted average exercise price of $1.77
    per share;

  . 9,550,526 shares of Class A common stock reserved for future issuance
    under our stock option plans;

  . 5,813,716 shares of Class A common stock issuable upon exercise of
    outstanding warrants with a weighted average exercise price of $3.53 per
    share; and

  . 2,071,652 additional shares of Class A common stock reserved for future
    issuance under our 2000 Employee Stock Purchase Plan.

   New investors will suffer additional dilution upon exercise of any
outstanding options or warrants. At March 31, 2001, assuming exercise and
payment of all outstanding options and warrants and including offering
proceeds, the pro forma as adjusted net tangible book value per share would
have been $2.64, representing dilution of $6.36 per share to new investors. At
March 31, 2001, assuming exercise and payment of all outstanding options and
warrants, the percentage of shares purchased and total consideration paid by
new investors would have been 7% and 33%, respectively.

                                       21


                      SELECTED CONSOLIDATED FINANCIAL DATA
                     (in thousands, except per share data)

   You should read the selected consolidated financial data in conjunction with
our financial statements and related notes included in this prospectus as well
as the section of the prospectus entitled "Management's Discussion and Analysis
of Financial Condition and Results of Operations." The statement of operations
data for the years ended December 31, 1998, 1999 and 2000 and the balance sheet
data as of December 31, 1999 and 2000 are derived from our audited consolidated
financial statements included in this prospectus. The statement of operations
data for the three months ended March 31, 2000 and 2001 and the balance sheet
data as of March 31, 2001 are derived from our unaudited financial statements.
In the opinion of management, all necessary adjustments, consisting only of
normal recurring adjustments, have been included to present fairly the
unaudited interim results when read in conjunction with the audited financial
statements and notes thereto appearing in this prospectus. Historical results
are not necessarily indicative of results that may be expected for any future
period.



                                                                            Three Months Ended
                                      Year Ended December 31,                   March 31,
                          ------------------------------------------------- -------------------
                            1996     1997     1998      1999       2000(1)    2000      2001(1)
                          -------- -------- --------  ---------  ---------- --------  ---------
                                                                 
Statement of Operations
 Data:
Revenues:
 Product................   $  --    $   94  $ 2,126   $  19,383   $ 72,721  $12,348    $31,068
 Development............    1,010    1,447    1,726       1,012        --       --         --
                           ------   ------  -------   ---------   --------  -------    -------
   Total revenues.......    1,010    1,541    3,852      20,395     72,721   12,348     31,068
                           ------   ------  -------   ---------   --------  -------    -------
Cost of revenues:
 Product and
  development...........      729    1,178    1,847       6,748     27,048    4,817     11,349
 Inventory write down...      --       --       --          --         --       --       4,895
 Deferred stock
  compensation..........      --       --       --           19        834       29        477
                           ------   ------  -------   ---------   --------  -------    -------
   Total cost of
    revenues............      729    1,178    1,847       6,767     27,882    4,846     16,721
                           ------   ------  -------   ---------   --------  -------    -------
Gross profit............      281      363    2,005      13,628     44,839    7,502     14,347
                           ------   ------  -------   ---------   --------  -------    -------
Operating expenses:
 Research and
  development, excluding
  deferred stock
  compensation..........      279      650    2,219       8,779     24,624    3,848     12,536
 Research and
  development--warrant
  issuance..............      --       --       --          --       6,375      --         --
 Sales and marketing,
  excluding deferred
  stock compensation....       94      190      349       2,292      7,130    1,186      3,527
 General and
  administrative,
  excluding deferred
  stock compensation....      107      266      391       1,767      7,611    1,225      2,946
 Deferred stock
  compensation..........      --       --       344         803      6,077      809      2,580
                           ------   ------  -------   ---------   --------  -------    -------
   Total operating
    expenses............      480    1,106    3,303      13,641     51,817    7,068     21,589
                           ------   ------  -------   ---------   --------  -------    -------
Operating income
 (loss).................     (199)    (743)  (1,298)        (13)    (6,978)     434     (7,242)
Other income and
 expenses...............       13      (61)    (189)         57      1,560      (63)       115
                           ------   ------  -------   ---------   --------  -------    -------
Income (loss) before
 provision (benefit) for
 income taxes...........     (186)    (804)  (1,487)         44     (5,418)     371     (7,127)
Provision (benefit) for
 income taxes...........      --         1        1          19     (1,749)     --      (2,676)
                           ------   ------  -------   ---------   --------  -------    -------
Net income (loss).......   $ (186)  $ (805) $(1,488)  $      25   $ (3,669) $   371    $(4,451)
                           ======   ======  =======   =========   ========  =======    =======
Accretion of redeemable
 convertible preferred
 stock to redemption
 value..................      --       --       --           48         95       24         24
Dividend related to
 warrant issuance.......      --       --       --          --       6,375      --         --
                           ------   ------  -------   ---------   --------  -------    -------
Net loss attributable to
 common shareholders....   $ (186)  $ (805) $(1,488)  $     (23)  $(10,139) $   347    $(4,475)
                           ======   ======  =======   =========   ========  =======    =======
Net income (loss) per
 share:
 Basic..................   $(0.01)  $(0.03) $ (0.05)  $     --    $  (0.34) $  0.01    $ (0.15)
                           ======   ======  =======   =========   ========  =======    =======
 Diluted................   $(0.01)  $(0.03) $ (0.05)  $     --    $  (0.34) $  0.01    $ (0.15)
                           ======   ======  =======   =========   ========  =======    =======
Weighted average shares:
 Basic..................   30,000   30,000   30,000      30,000     30,000   30,000     30,060
                           ======   ======  =======   =========   ========  =======    =======
 Diluted................   30,000   30,000   30,000      30,000     30,000   67,539     30,060
                           ======   ======  =======   =========   ========  =======    =======
Pro forma net loss per
 share:
 Basic and diluted......                                          $  (0.19)            $ (0.08)
                                                                  ========             =======
 Weighted average
  shares................                                            54,226              57,177
                                                                  ========             =======


   Pro forma net income (loss) per share has been computed to give effect to
   the fact that, if the offering contemplated by this prospectus is
   consummated, it would result in the conversion of all of the Series A and
   Series B redeemable convertible preferred stock outstanding into 24,226 and
   27,116 shares of Class A common stock at December 31, 2000 and March 31,
   2001, respectively.
- -------------------
(1) As restated, see note 15 to the consolidated financial statements.

                                       22




                                                                          Three Months
                                                                             Ended
                                      Year Ended December 31,              March 31,
                          ----------------------------------------------- ------------
                            1996     1997     1998     1999     2000(1)   2000 2001(1)
                          -------- -------- -------- -------- ----------- ---- -------
                                                          
Deferred Stock
 Compensation:
Research and
 development............   $ --     $ --      $344     $216     $2,825    $178 $1,381
Sales and marketing.....     --       --       --        31        537      44    422
General and
 administrative.........     --       --       --       556      2,715     587    777
                           -----    -----     ----     ----     ------    ---- ------
   Total................   $ --     $ --      $344     $803     $6,077    $809 $2,580
                           =====    =====     ====     ====     ======    ==== ======




                                                                              As of
                                       As of December 31,                   March 31,
                         -------------------------------------------------- ---------
                           1996      1997      1998      1999      2000(1)   2001(1)
                         --------  --------  --------  --------  ---------- ---------
                                                          
Balance Sheet Data:
Cash and cash
 equivalents............ $   281   $   273   $   303   $ 8,997    $29,159    $20,877
Working capital
 (deficit)..............    (287)      (90)      (34)   15,108     41,648     34,917
Total assets............     783       793     1,747    22,644     90,266     90,999
Long-term obligations,
 net of current.........       3       926     2,189     3,926      1,018      1,390
Redeemable convertible
 preferred stock........     --        --        --     14,978     55,073     55,097
Total shareholders'
 equity (deficit).......    (161)     (856)   (1,995)     (714)     9,091      7,784

- ---------------------
(1)As restated, see note 15 to the consolidated financial statements.

                                       23


                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

   The following discussion should be read in conjunction with our consolidated
financial statements included elsewhere in this prospectus. This discussion
contains forward-looking statements that involve risks and uncertainties. Our
actual results could differ materially from those anticipated in these forward-
looking statements as a result of various factors including those set forth
under "Risk Factors" and elsewhere in this prospectus.

Overview

   We design, develop and market advanced integrated circuits, modules and
higher-level assemblies that enable next generation optical networking systems.
We outsource substantially all of our semiconductor fabrication and focus our
efforts on the design, development and marketing of our products.

   From our inception on July 26, 1994 through December 31, 1996, our
operations consisted primarily of start-up activities, including development of
our initial products. During 1996, we began generating development revenues
through technology development contracts with several of our customers. In July
1997, we began shipping our first product for customer evaluation. During the
first quarter of 1998, we recognized our first significant product revenues and
further invested in research and development, sales and marketing, operations
and our general and administrative infrastructure.

   During 2001, we shipped our products to over 30 customers. To date, we have
generated a substantial portion of our revenues from a limited number of
customers. Our top three customers for the three months ended March 31, 2001
were Alcatel, TyCom and Cisco, representing 49%, 16% and 10% of our revenues,
respectively. Our top three customers for the year ended December 31, 2000 were
Lucent, Alcatel and Cisco, representing approximately 34%, 28% and 11% of our
revenues, respectively. A number of network service providers have recently
announced plans to curtail the level of their capital expenditures on their
infrastructure build-out, which could significantly reduce the demand for our
products by communications equipment manufacturers, including these principal
customers. We expect that in future periods our customer base will become less
concentrated both generally and within our top three customers.

   We have focused our initial sales and marketing efforts on North American
and European communications equipment manufacturers. During the three months
ended March 31, 2001, we derived 59% of our total revenues from communications
equipment manufacturers in North America compared with 73% in 2000. We
currently sell through our direct sales force in North America and Europe, and
through selected independent sales representatives in North America, Germany,
United Kingdom, Italy, France, Israel, China, Korea and Japan. International
revenues are denominated in U.S. dollars, which reduces our exposure to foreign
currency risks. We expect international revenues to continue to account for a
significant percentage of total revenues, driven primarily by increased sales
to customers in Europe and Asia.

   Revenues. We recognize product revenues at the time of shipment. Our
customers are not obligated by long-term contracts to purchase our products and
can generally cancel or reschedule orders on short notice. We historically
derived our development revenues from technology development contracts. Under
these contracts, we received payments from customers for designing and
developing products for use in their optical networking equipment. We recognize
development revenues using the percentage-of-completion method, measured by the
percentage of costs incurred to date to estimated total costs for each
contract. We recognized no development revenues during 2000 or during the three
months ended March 31, 2001, and do not expect to recognize any significant
development revenues in the future. The recent slowdown in the build-out of the
communications infrastructure has caused our revenues to grow less rapidly than
they otherwise would have.

   Cost of Revenues. Cost of revenues consists of component and materials cost,
direct labor, deferred stock compensation relating to manufacturing labor,
manufacturing, overhead costs and estimated warranty costs. We

                                       24


outsource substantially all of the fabrication and assembly, and a portion of
the testing, of our products. Accordingly, a significant portion of our cost of
revenues consists of payments to our third-party manufacturers. As revenues
increase, we believe favorable trends should occur in manufacturing costs due
to our ability to absorb overhead costs over higher volumes.

   Research and Development. Research and development expenses consist
primarily of salaries and related personnel costs, equipment, material, third-
party costs and fees related to the development and prototyping of our products
and depreciation associated with engineering and design software costs. We
expense our research and development costs as they are incurred, except for
engineering and design software, which are capitalized and depreciated over the
life of the software. Research and development is key to our future success,
and we intend to increase our research and development expenses in future
periods in absolute dollar amounts.

   Sales and Marketing. Sales and marketing expenses consist primarily of
salaries, commissions and related expenses for personnel engaged in sales,
marketing, customer service and application engineering support functions and
costs associated with trade shows. We expect that sales and marketing expenses
will increase in future periods in absolute dollar amounts as we hire
additional sales and marketing personnel, initiate additional marketing
programs, establish sales offices in additional domestic and international
locations and expand our customer service and support organizations.

   General and Administrative. General and administrative expenses consist
primarily of salaries and related expenses for executive, finance, accounting,
facilities, information services, human resources, recruiting, professional
fees and other corporate expenses. We expect general and administrative
expenses to increase in absolute dollar amounts as we add personnel and incur
additional costs related to the growth of our business and our operation as a
public company.

   Deferred Stock Compensation. In connection with the granting of stock
options to our employees, officers and directors, we recorded deferred stock
compensation of $6.1 million for the three months ended March 31, 2001, $14.1
million in 2000, $6.0 million in 1999 and $0.5 million in 1998. Deferred stock
compensation represents the difference between the grant price and the fair
value of the common stock underlying options granted during these periods.
Deferred stock compensation is presented as a reduction of shareholders'
equity. We are amortizing our deferred stock compensation using the graded
vesting method, in accordance with FASB Interpretation No. 28, over the vesting
period of each respective option, generally four years.  Based on our balance
of deferred stock compensation as of March 31, 2001, we estimate our
amortization of deferred stock compensation for each of the periods below to be
as follows:



   Year Ending December 31,                                           Amount
   ------------------------                                       --------------
                                                                  (in thousands)
                                                               
    2001 (subsequent to March 31, 2001)..........................    $ 6,743
    2002.........................................................      5,461
    2003.........................................................      2,632
    2004.........................................................        788
                                                                     -------
      Total......................................................    $15,624
                                                                     =======


   Approximately $3.3 million of the remaining amortization of deferred stock
compensation will be charged to cost of revenues. Subsequent to March 31, 2001,
we granted 2,582,000 stock options to employees with a weighted average
exercise price of $6.47. In connection with these grants, we recorded
$3,961,125 of deferred stock compensation that will be amortized to expense
over a four year period that is consistent with the vesting schedule of such
options.

   Net Income (Loss). In addition to the items discussed above, net income
(loss) also includes interest expense, other income and a provision or benefit
for income taxes. Interest expense relates predominantly to interest on the
line of credit from a shareholder which was paid in full in May 2000 and
interest expense associated with capital leases. Other income represents
investment earnings on our cash equivalents.

                                       25


   Restatement. Our financial statements for the year ended December 31, 2000
and for the three months ended March 31, 2001 have been restated. Refer to note
15 in the accompanying consolidated financial statements for further
discussion.

Results of Operations

 Three Months Ended March 31, 2001 and 2000

   Revenues. Revenues increased to $31.1 million for the three months ended
March 31, 2001, compared with $12.3 million for the three months ended March
31, 2000. The increase was due to higher unit volume shipments of integrated
circuits, modules and higher-level assemblies to existing and new customers and
the introduction of new products.

   Gross Profit. Cost of revenues, including $476,544 of deferred stock
compensation, increased to $16.7 million for the three months ended March 31,
2001, compared with $4.8 million for the three months ended March 31, 2000.
Gross profit as a percentage of revenues, or gross margin, decreased to 46% for
the three months ended March 31, 2001 compared with 61% for the three months
ended March 31, 2000. The decrease in gross margin was due predominantly to
$4.9 million of inventory charges to reduce inventories to their net realizable
value. Included in the $4.9 million is a $4.3 million inventory write-down
required as a result of a migration by certain of our customers from GaAs-based
products to SiGe-based comparable products. This has resulted in cancellation
of orders by certain customers, the most significant of which was by Alcatel's
submarine networks division, which has moved to a new design system more
rapidly than expected, and certain other customers indicating that they will be
utilizing SiGe products instead of GaAs products in the future. Also included
in this inventory charge is $600,000 that relates to consigned inventories
located at our finished goods suppliers. The charge is the result of inventory
shrink and lower than expected production yields during the three months ended
March 31, 2001 at these finished goods suppliers. We performed procedures to
ensure that the entire charge is associated with the first quarter of 2001
including conducting a physical count of the consigned inventory during the
fourth quarter of 2000. We identified this inventory shortage as our suppliers
utilized consigned raw materials for the production of our products. As the
consigned raw material inventory balance was reduced, we realized that a
discrepancy existed between our perpetual records and the actual physical
quantity on hand at our suppliers' locations. We will no longer consign
inventory to these suppliers as we are allowing these suppliers to purchase
their own raw materials to manufacture our finished good products. This will
improve cash flows by maintaining lower raw material inventory levels.

   Excluding the $4.9 million inventory charge and deferred stock compensation,
gross margin would have increased to 63% for the three months ended March 31,
2001 compared with 61% for the three months ended March 31, 2000. This increase
was due primarily to the introduction of new module and higher-level assembly
products with higher gross margins. Stock based compensation expense associated
with cost of revenues increased $447,544 due to stock option grants to
manufacturing employees coupled with increased manufacturing headcount.

   Research and Development. Research and development expenses, excluding
deferred stock compensation, increased to $12.5 million for the three months
ended March 31, 2001 compared with $3.8 million for the three months ended
March 31, 2000. As a percentage of revenues, research and development expenses
increased to 40% for the three months ended March 31, 2001 compared with 31%
for the three months ended March 31, 2000. The increase in both dollars and as
a percent of sales was due primarily to the addition of engineering personnel
in the United States and three new research and development centers located
within Europe and Israel, costs associated with a joint development agreement
that we entered into during May 2000 and depreciation and amortization on
research and development equipment and software purchased during the late 2000
and early 2001. Stock based compensation expense associated with research and
development increased $1.2 million due to stock option grants to engineering
personnel coupled with increased headcount.

   Sales and Marketing. Sales and marketing expenses, excluding deferred stock
compensation, increased to $3.5 million for the three months ended March 31,
2001, compared with $1.2 million for the three months ended March 31, 2000. As
a percentage of revenues, sales and marketing expenses increased to 11% for the
three months ended March 31, 2001 compared with 10% for the three months ended
March 31, 2000. The

                                       26


increase in both dollars and as a percent of sales was due primarily to the
addition of sales and marketing personnel as we began to expand our sales
force. Stock based compensation expense associated with sales and marketing
increased $377,894 due to stock option grants to sales and marketing personnel
coupled with increased headcount.

   General and Administrative. General and administrative expenses, excluding
deferred stock compensation, increased to $2.9 million for the three months
ended March 31, 2001, compared with $1.2 million for the three months ended
March 31, 2000. The increase was due primarily to the addition of personnel and
the associated payroll and related costs within the areas of senior management,
finance and human resources. General and administrative expenses as a
percentage of revenues were 9% for the three months ended March 31, 2001,
compared with 10% for the three months ended March 31, 2000. The decrease was
attributable to higher growth in revenues. Stock based compensation expense
associated with general and administrative expenses increased $190,538 due to
stock option grants to personnel in the areas of finance and human resources
coupled with increased headcount.

   Deferred Stock Compensation. Operating expenses included amortization of
deferred stock compensation of $2.6 million for the three months ended March
31, 2001, compared with $808,857 for the three months ended March 31, 2000, due
to a greater number of option grants to new and existing employees.

   Other Income and Expenses, Net. Other income increased to $115,276 for the
three months ended March 31, 2001, compared with other expenses of $63,079 for
the three months ended March 31, 2000. The increase was due primarily to
increased interest income related to higher average cash and cash equivalent
balances during the three months ended March 31, 2001 and lower interest
expense as a result of no interest expense on the line of credit from a
shareholder which was paid in full in May 2000, offset by $130,121 of losses
from our investment accounted for under the equity method of accounting.

   Net Income (Loss). Net loss was $4.5 million for the three months ended
March 31, 2001, compared with the net income of $371,005 for the three months
ended March 31, 2000. The net loss was predominantly due to the inventory
charges discussed above.

 Years Ended December 31, 2000 and 1999

   Revenues. Revenues increased to $72.7 million in 2000, compared with $20.4
million in 1999. The increase was due to higher unit volume shipments of
integrated circuits, modules and higher-level assemblies to existing and new
customers and the introduction of new products. We recognized no development
revenues in 2000, compared to $1.0 million of development revenues in 1999.

   Gross Profit. Cost of revenues, including $834,093 of deferred stock
compensation, increased to $27.9 million in 2000, compared with $6.8 million in
1999. Excluding deferred stock compensation, gross profit as a percentage of
revenues, or gross margin, declined to 63% in 2000 compared with 67% in 1999.
The decline was predominantly due to a contractual reduction in selling price
during 2000 for an integrated circuit product that was first introduced in 1999
for a specific customer, offset by an absence of development revenues which
have lower margins than our product revenues. In accordance with an agreement
with the customer, the selling price was reduced as certain volume thresholds
were attained. No further selling price reductions are required under this
agreement. During 1999, gross margin for development revenues was 37%. No
development revenues were recognized during 2000 and we do not expect
development revenues to be material in the future. Gross profit including
deferred stock compensation increased to $44.8 million in 2000 compared with
$13.6 million in 1999 due to the items noted above coupled with increased
deferred stock compensation charges. Stock based compensation expense
associated with cost of revenues increased $815,062 due to stock option grants
to manufacturing employees coupled with increased manufacturing headcount.

   Research and Development. Research and development expenses, excluding
deferred stock compensation, increased to $24.6 million in 2000, compared with
$8.8 million in 1999. The increase was due

                                       27


primarily to the addition of engineering personnel and increased costs for
engineering and design software. Research and development expenses as a
percentage of revenues decreased in 2000 to 34%, compared with 43% in 1999. The
decrease was attributable to a higher growth in revenues. Stock based
compensation expense associated with research and development increased $2.6
million due to stock option grants to engineering personnel coupled with
increased headcount.

   Research and Development--Warrant Issuance. We incurred a non-cash charge of
$6.4 million related to a warrant issuance in 2000. This charge represents the
fair value of a warrant issued to a third party in conjunction with a
development agreement. This warrant is fully exercisable and non-forfeitable.
We have expensed the value of this warrant because there is no third party
performance required with respect to the warrant, and the activities underlying
the development agreement relate to research and development efforts for which
we cannot determine the benefit, if any, which may result.

   Sales and Marketing. Sales and marketing expenses, excluding deferred stock
compensation, increased to $7.1 million in 2000, compared with $2.3 million in
1999. The increase was due primarily to the addition of sales and marketing
personnel. Sales and marketing expenses as a percentage of revenues were 10% in
2000, compared with 11% in 1999. The decrease was a result of higher growth in
revenues. Stock based compensation expense associated with sales and marketing
increased $505,455 due to stock option grants to sales and marketing personnel
coupled with increased headcount.

   General and Administrative. General and administrative expenses, excluding
deferred stock compensation, increased to $7.6 million in 2000, compared with
$1.8 million in 1999. The increase was due primarily to the addition of
personnel and the associated payroll and related costs within the areas of
finance and human resources. General and administrative expenses as a
percentage of revenues were 10% in 2000, compared with 9% in 1999. Stock based
compensation expense associated with general and administrative expenses
increased $2.2 million due to stock option grants to personnel in the areas of
finance and human resources coupled with increased headcount.

   Deferred Stock Compensation. Operating expenses included amortization of
deferred stock compensation of $6.1 million in 2000, compared with $803,551 in
1999, due to a greater number of option grants to new and existing employees.

   Other Income and Expenses, Net. Other income increased to $1.6 million in
2000, compared with $57,068 in 1999. The increase was due primarily to
increased interest income of $1.6 million related to higher cash and cash
equivalent balances due primarily to the issuances of preferred stock from
March to May 2000 offset by a $83,561 increase in interest expense resulting
from realizing a full year of interest expense in 2000 on a capital lease
entered into in late 1999 and interest expense on fixed asset additions
financed in 2000 coupled with lower interest expense on the line of credit to a
shareholder which was paid in full in May 2000.

   Net Income (Loss). Net loss increased to $3.7 million in 2000, compared with
net income of $24,540 in 1999. The net loss was primarily due to increased
deferred stock compensation of $6.1 million and expenses of $6.5 million
associated with warrant issuances offset by an income tax benefit of $1.7
million. The provision for income taxes was not material during 1999 as we
utilized a net operating loss carryforward to offset substantially all of our
taxable income. The tax benefit in 2000 is the result of our recognizing a
portion of our deferred tax assets because we believe that it is more likely
than not that we will have sufficient income to utilize such assets.

 Years Ended December 31, 1999 and 1998

   Revenues. Revenues increased to $20.4 million in 1999, compared with $3.9
million in 1998. The increase was due to increases in shipments of integrated
circuits, modules and higher-level assemblies to existing and new customers and
the introduction of new products. Development revenues declined to $1.0 million
in 1999, compared with $1.7 million in 1998.

                                       28


   Gross Profit. Cost of revenues, including $19,031 of deferred stock
compensation, increased to $6.8 million in 1999, compared with $1.8 million in
1998. Gross margin increased to 67% in 1999, compared with 52% in 1998. The
increase in gross margin in 1999 was due to increased sales of higher margin
products relative to revenues associated with lower margin development
contracts in 1998. Gross margin for product revenues increased to 68% in 1999,
compared with 63% in 1998. The increase in product gross margin was due to the
introduction of new products with higher gross margins. A decline in gross
margin for development revenues to 37% in 1999, compared with 39% in 1998,
partially offset product gross margin increases. There was no stock based
compensation expense associated with cost of revenues during 1998 and $19,031
during 1999.

   Research and Development. Research and development expenses increased to
$8.8 million in 1999, compared with $2.2 million in 1998. The increase was due
primarily to the addition of engineering personnel and increased costs for
engineering and design software. Research and development expenses as a
percentage of revenues decreased in 1999 to 43%, compared with 58% in 1998, due
primarily to higher growth in revenues during this period.

   Sales and Marketing. Sales and marketing expenses increased to $2.3 million
in 1999, compared with $0.3 million in 1998. The increase was due primarily to
the addition of personnel and related costs in the areas of sales, application
engineering and marketing activities.

   General and Administrative. General and administrative expenses increased to
$1.8 million in 1999 compared with $0.4 million in 1998. The increase was due
primarily to the addition of human resources and administrative personnel and
the relocation of our headquarters facility to Somerset, New Jersey.

   Deferred Stock Compensation. Amortization of deferred stock compensation
increased to $803,551 in 1999 from $343,870 in 1998 due to a greater number of
option grants made to new and existing employees predominantly in general and
administrative functions.

   Other Income and Expenses, Net. Other income was $57,068 in 1999, compared
with other expense of $188,417 in 1998. The increase was due primarily to
increased interest income of $283,632 related to higher cash and cash
equivalent balances due primarily to the issuance of preferred stock in June
1999 offset by a $38,147 increase in interest expense due primarily to higher
interest on the line of credit to a shareholder which had a higher average
outstanding balance during 1999.

   Net Income (Loss). Net income increased to $24,540 in 1999, compared with a
net loss of $1.5 million in 1998. The decrease in the net loss was
predominantly due to improved gross profit and an increase in other income
offset by the expense increases discussed above.

                                       29


Quarterly Results of Operations

  The following table sets forth for the periods presented certain data from
our consolidated statement of operations. The consolidated statement of
operations data have been derived from our unaudited quarterly consolidated
financial statements. In the opinion of management, these statements have been
prepared on substantially the same basis as the audited consolidated financial
statements and include all adjustments, consisting of normal recurring
adjustments, necessary for a fair presentation of the financial information for
the periods presented. This information should be read in conjunction with the
consolidated financial information and notes thereto included elsewhere in this
prospectus.



                                                             Three-Months Ended
                   --------------------------------------------------------------------------------------------------------
                   March 31, June 30,  September 30, December 31, March 31, June 30,  September 30, December 31, March  31,
                     1999      1999        1999          1999       2000      2000        2000        2000(1)     2001(1)
                   --------- --------  ------------- ------------ --------- --------  ------------- ------------ ----------
                                                               (in thousands)
                                                                                      
Revenues:
 Product.........   $ 2,406  $ 3,555      $ 5,322      $ 8,100     $12,347  $16,320      $18,680      $25,374     $31,068
 Development.....       323      623           66          --          --       --           --           --          --
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
 Total revenues..     2,729    4,178        5,388        8,100      12,347   16,320       18,680       25,374      31,068
Cost of revenues,
 including
 deferred stock
 compensation....       747    1,487        1,773        2,762       4,845    6,174        7,212        9,651      16,721
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
Gross profit.....     1,982    2,691        3,615        5,338       7,502   10,146       11,468       15,723      14,347
Operating
 expenses:
 Research and
  development,
  excluding
  deferred stock
  compensation...       793    1,792        2,288        3,906       3,848    5,086        6,682        9,008      12,536
 Research and
  development--
  warrant
  issuance.......       --       --           --           --          --     6,375          --           --          --
 Sales and
  marketing,
  excluding
  deferred stock
  compensation...       325      470          602          895       1,186    1,328        1,893        2,723       3,527
 General and
  administrative,
  excluding
  deferred stock
  compensation...       207      457          509          594       1,226      884        2,198        3,303       2,946
 Deferred stock
  compensation...        25       36           55          685         808    1,270        1,862        2,137       2,580
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
 Total operating
  expenses.......     1,350    2,755        3,454        6,080       7,068   14,943       12,635       17,171      21,589
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
Operating income
 (loss)..........       632      (64)         161         (742)        434   (4,797)      (1,167)      (1,448)     (7,242)
Other income and
 expenses........       (43)     (72)         181           (9)        (63)     190          708          725         115
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
Income (loss)
 before provision
 (benefit) for
 income taxes....       589     (136)         342         (751)        371   (4,607)        (459)        (723)     (7,127)
Provision
 (benefit) for
 income taxes....       --       --           --            19         --       447          400       (2,596)     (2,676)
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
Net income
 (loss)..........   $   589  $  (136)     $   342      $  (770)    $   371  $(5,054)     $  (859)     $ 1,873     $(4,451)
                    =======  =======      =======      =======     =======  =======      =======      =======     =======
Dividend related
 to warrant
 issuance........       --       --           --           --          --   $ 6,375          --           --          --
                    -------  -------      -------      -------     -------  -------      -------      -------     -------
Net income (loss)
 per share:
 Basic...........   $  0.02  $   --       $  0.01      $ (0.03)    $  0.01  $ (0.38)     $ (0.03)     $  0.06     $ (0.15)
                    =======  =======      =======      =======     =======  =======      =======      =======     =======
 Diluted.........   $  0.02  $   --       $  0.01      $ (0.03)    $  0.01  $ (0.38)     $ (0.03)     $  0.02     $ (0.15)
                    =======  =======      =======      =======     =======  =======      =======      =======     =======

- -----------------
(1) As restated, see note 15 to the consolidated financial statements.

Liquidity and Capital Resources

  We have funded our operations primarily through private sales of preferred
stock. We also secured additional financing through capital leases and vendor
financings for some of our equipment and software needs. As of March 31, 2001,
we had cash and cash equivalents of $20.9 million.

  Cash used in operating activities during the three months ended March 31,
2001 was $2.2 million compared to $2.4 million during the comparable period in
2000. The cash used in operations during the three months ended March 31, 2001
was

                                       30


predominantly due to inventory purchases. Cash provided from operations
increased to $661,829 in 2000 compared with cash used in operations of $5.8
million in 1999. This increase was due to our improved profitability after
adjusting for non-cash items such as warrant issuances, deferred stock
compensation and depreciation and amortization.

   Cash used in investing activities increased to $5.9 million for the three
months ended March 31, 2001 from $466,366 for the three months ended March 31,
2000. The increase was due to the purchase of $4.3 million of property and
equipment and to an additional $1.7 million purchase in one of our existing
non-marketable investments. Cash used for investing activities increased to
$17.4 million in 2000 from $695,491 in 1999. The increase was due to the
purchase of $15.0 million of property and equipment as we continued to expand
our infrastructure and to $2.4 million of purchases of non-marketable
securities.

   Cash used in financing activities was $161,404 for the three months ended
March 31, 2001 compared with cash provided by financing activities of $22.9
million for the three months ended March 31, 2000. The decrease in cash
provided by financing activities is due to a $23.0 million offering of
preferred stock during the three months ended March 31, 2000. Cash generated
from financing activities increased to $36.9 million in 2000 compared with
$15.2 million in 1999. This increase was due primarily to the sale of
$40.0 million of Series B preferred stock in March through May 2000.

   Cash and cash equivalents decreased to $20.9 million at March 31, 2001 from
$29.2 million on December 31, 2000 due to the uses of cash in operating and
investing activities. Cash and cash equivalents, increased to $29.2 million on
December 31, 2000 from $9.0 million on December 31, 1999 due primarily to the
sale of the Series B preferred shares during March through May 2000.

   We are obligated to make payments of approximately $16.0 million over the
lease periods of our operating leases, with $4.7 million due in 2001. We
believe the net proceeds of this offering, together with our current cash and
cash equivalents will be sufficient to meet our capital and operating
requirements at least through the next 12 months, although we could be
required, or could elect, to seek additional funding prior to that time.

Recently Issued Accounting Pronouncements

   In June 1998, June 1999 and June 2000, the Financial Accounting Standards
Board, or the FASB, issued Statement of Financial Accounting Standards ("SFAS")
No. 133, "Accounting for Derivative Instruments and Hedging Activities", SFAS
No. 137, "Accounting for Derivative Instruments and Hedging Activities--
Deferral of the Effective Date of FASB Statement No. 133" and SFAS No. 138,
"Accounting for Derivative Instruments and Hedging Activities--An Amendment of
SFAS No. 133." SFAS No. 133, as amended, requires the recognition of all
derivatives as either assets or liabilities in the balance sheet and the
measurement of those instruments at fair value. The accounting for changes in
the fair value of a derivative depends on the planned use of the derivative and
the resulting designation. Effective January 1, 2001, we adopted SFAS No. 133,
which also establishes criteria for designation and effectiveness of derivative
transactions for which hedge accounting is applied. We assess the initial and
ongoing effectiveness of our hedging relationships in accordance with our
documented policies. There was no cumulative effect of adopting SFAS No. 133 as
of January 1, 2001, because we were not party to any derivative as of that
date.

   In December 1999, the SEC issued Staff Accounting Bulletin No. 101, or SAB
101, "Revenue Recognition in Financial Statements," which provides guidance on
the recognition, presentation and disclosure of revenue in financial statements
filed with the SEC. SAB 101 outlines the basic criteria that must be met to
recognize revenue and provides guidance for disclosures related to revenue
recognition policies. We have reviewed these criteria and believe our policies
for revenue recognition are in accordance with SAB 101.

   In March 2000, the FASB issued Interpretation No. 44, or FIN 44, "Accounting
for Certain Transactions Involving Stock Compensation--an interpretation of APB
Opinion No. 25." FIN 44 clarifies the application of Accounting Principles
Board Opinion No. 25, "Accounting for Stock Issued to Employee," or APB 25. FIN
44

                                       31


clarifies the following: the definition of an employee, the criteria for
determining whether a plan qualifies as a non-compensatory plan, the accounting
consequences of various modifications to the terms of previously fixed stock
options or awards and the accounting for an exchange of stock compensation
awards in a business combination. FIN 44 is effective July 1, 2000, but certain
conclusions in FIN 44 cover specific events that occur after either December
15, 1998, or January 12, 2000. The adoption of FIN 44 did not have a material
impact on our financial position or results of operations.

Qualitative and Quantitative Disclosures About Market Risk

 Foreign Currency Risk

   We develop and market our products in North America and Europe. As a result,
our financial results could be affected by factors such as changes in foreign
currency exchange rates or weak economic conditions in foreign markets. As our
sales are currently made or denominated in U.S. dollars, a strengthening of the
dollar could make our products less competitive in foreign markets. Although we
recognize our revenues in U.S. dollars, we incur expenses in currencies other
than U.S. dollars.

   During 1999, we were exposed to exchange rate fluctuations in the German
mark and the Lithuanian lita. No revenues were denominated in foreign
currencies. Total expenses denominated in both the mark and lita were
approximately $1.2 million or 5.7% of total expenses. Expenses denominated in
the mark represented approximately $1.1 million of the $1.2 million.

   We were exposed to fluctuations in the mark, lita and the Israeli shekel
during 2000. Total expenses denominated in the mark, lita and shekel were $6.1
million or 4.9% of total expenses. Expenses denominated in the mark and shekel
represented approximately $3.7 million and approximately $2.3 million,
respectively, of foreign expenses.

   During the three months ended March 31, 2001, total expenses denominated in
the mark, lita and shekel were $4.1 million or 11.0% of total expenses.
Expenses denominated in the mark and shekel represented approximately $2.2
million and $1.9 million, respectively, of foreign expenses. We expect that our
foreign expenses will increase as we expand our research and development and
sales efforts in foreign countries.

   During 2000, we did not engage in currency hedging activities. During the
quarter ending March 31, 2001, we entered into foreign forward contracts for
6.9 million Euros with a notional amount of $6.6 million. The contracts mature
throughout 2001 and were entered into to hedge a portion of Euro and mark
denominated expenses. Although we have not experienced significant foreign
exchange rate losses to date, we may in the future, especially to the extent
that we do not engage in hedging.

   The economic impact of currency exchange rate movements on our operating
results is complex because such changes are often linked to variability in real
growth, inflation, interest rates, governmental actions and other factors.
These changes, if material, may cause us to adjust our financing and operating
strategies. Consequently, isolating the effect of changes in currency does not
incorporate these other important economic factors.

 Interest Rate Risk

   Our interest income is sensitive to changes in the general level of U.S.
interest rates, particularly because the majority of our investments are in
short-term instruments. Due to the short-term nature of our investments, we
believe that there is no material risk exposure. Therefore, no quantitative
tabular disclosures have been included.

                                       32


                                    BUSINESS

Overview

   We design, develop and market advanced integrated circuits, modules and
higher-level assemblies that enable next generation optical networking systems.
Our products address the markets for DWDM and SONET/SDH optical networking
equipment. We focus exclusively on the fastest commercially available speeds of
OC-192, or 10 gigabits per second, or higher and are in the early stages of
developing products that are designed to address future systems that may
operate at speeds of OC-768, or 40 gigabits per second. We seek to be first to
develop innovative products with system functions that allow communications
equipment manufacturers to rapidly build and deliver high performance fiber
optic systems ahead of their competitors. We work closely with our customers to
design and deliver integrated product solutions utilizing our semiconductor,
circuit design and systems level expertise. We sell our products to leading and
emerging communications equipment manufacturers that develop high-speed optical
networking systems. Our customers include Alcatel, Ciena, Cisco, JDS Uniphase,
Lucent, Marconi, Nortel, ONI, Optimight, Sycamore and TyCom.

Industry Background

 Dramatic Increase in the Volume of Communications Traffic

   The volume of data traffic across communications networks has grown rapidly
over the past decade. This growth has been driven by the increased use of data-
intensive applications such as electronic commerce, Internet access, e-mail,
streaming audio and video, remote access and other new applications. This data
traffic is also expected to accelerate in the coming years. RHK, Inc., a
leading market research and consulting firm, estimates that data traffic across
communications networks will increase from 350,000 terabytes per month in 1999
to more than 16 million terabytes per month in 2003. Ten terabytes is the
equivalent of all of the information contained in the Library of Congress. This
dramatic increase in data traffic and the deployment of bandwidth-intensive
applications and services has placed a significant burden on the traditional
communications infrastructure, resulting in network congestion, decreased
reliability and an inability to scale network capacity effectively.

 Development of Fiber Optic Networks

   Much of the public network's infrastructure was originally designed to
transmit voice communications utilizing copper wire as the primary transmission
medium. This copper wire-based infrastructure is ill-suited for high-speed data
transmission due to bandwidth limitations and high maintenance and
administration costs. The inadequacy of the legacy public network
infrastructure is particularly acute in the backbone, or core portion of the
network. The core is the portion of the network characterized by long distance
transmissions at high-speeds, or bit rates. Communications service providers
are upgrading their network architectures by increasing bandwidth and switching
capabilities for high-speed data and voice transmissions and are replacing
conventional copper wire technology with fiber optic technology. Fiber optics
offers substantially greater capacity than copper wire and is less error-prone
and, as a result has become the transmission medium of choice for both
incumbent and emerging service providers. SONET and SDH are the standards, or
protocols, for the transmission of communications traffic over optical fiber.
SONET and SDH facilitate high data integrity and improve network reliability at
the higher transmission rates demanded in newly developed optical networking
systems.

 Innovations in Optical Networking Systems

   The increased demand for bandwidth is driving communications equipment
manufacturers to incorporate technologies that increase the capacity of optical
networking systems. The two primary approaches for increasing capacity are
higher transmission speeds and higher channel density. The majority of new
optical networking systems deployed by service providers addressing the network
core operate at 10 gigabits per

                                       33


second, or Gb/s. We believe future network deployments will incorporate systems
that operate at 40 Gb/s or faster when the technology becomes commercially
available. DWDM is a technology development that increases the capacity of
existing fiber optic networks by combining multiple light beams of information,
each at a different wavelength, or channel, onto a single strand of optical
fiber. Higher transmission speeds and increased deployments of DWDM technology
have significantly increased the complexity of optical networking systems. In
addition, we believe that next generation optical networks will add substantial
functionality and innovations to the optical transport layer to further
optimize available capacity.

 Components for Optical Networking Systems

   As communications equipment manufacturers develop systems that enable higher
transmission speeds and deploy DWDM technology to increase bandwidth, they must
integrate a greater number of complex components that generate, manipulate,
transmit and receive electrical and optical signals. These components include
integrated circuits, modules and higher-level assemblies and are becoming
increasingly important for the manufacture of optical networking systems. These
components are viewed as critical to communications equipment manufacturers
seeking competitive advantages. The need for communications equipment
manufacturers to focus on their core competencies and meet aggressive time-to-
market demands for new optical networking systems, along with the complexities
associated with the design and development of state-of-the-art components, have
caused communications equipment manufacturers to increasingly rely upon
sophisticated component suppliers.

 Requirements for Supplying Components in Optical Networking Systems

   To meet the performance and functionality requirements of optical networking
systems, communications equipment manufacturers are seeking suppliers that can
deliver increasingly sophisticated component solutions. These component
suppliers must provide each of the following:

   Systems Level Expertise. Component suppliers must understand the
performance, functionality and integration requirements of the system into
which their components are incorporated. Without this critical systems
knowledge, a component supplier will have difficulty meeting the time-to-market
and functionality requirements of the communications equipment manufacturers,
thereby resulting in costly delays and missed revenue opportunities.

   Advanced Technologies and Processes that Enable High-Speed
Transmission. Building high-speed integrated circuits requires access to
specialized process technologies and advanced circuit design approaches. The
vast majority of the semiconductor industry employs a CMOS transistor built on
silicon material. Because of demanding performance requirements, alternatives
to CMOS have emerged in the communications industry. Specifically, GaAs and
SiGe have emerged as semiconductor technologies that are effective in
addressing high-speed optical communications requirements. Component suppliers
are also exploring other semiconductor technologies, such as Indium Phosphide,
or InP, to address the requirements of future, higher speed communications
systems. Each of these processes poses significant challenges and has distinct
characteristics that require extensive knowledge and expertise. Communications
equipment manufacturers are looking for component suppliers that have the
necessary expertise to use the optimal processes in order to provide next
generation optical systems solutions for their customers.

   Highly Integrated Product Solutions. In order to rapidly and cost
effectively introduce new products and simplify the design and manufacture of
optical networking systems, communications equipment manufacturers seek
component suppliers that can provide highly integrated solutions. These
integrated solutions are modules or higher-level assemblies that combine
numerous discrete components into a package or board to be sold as a single
product, which eliminates the time and expense associated with sourcing and
integrating components from multiple suppliers. As systems are manufactured in
greater volumes, communications equipment manufacturers require that modules
and higher-level assemblies be integrated further into multi-chip or single-
chip solutions. This integration provides for faster and more efficient
production, reduced part count and

                                       34


smaller design for placement into the network equipment, significantly reducing
manufacturing costs for communications equipment manufacturers.

The Multilink Solution

   We design, develop and market advanced integrated circuits, modules and
higher-level assemblies that enable next generation optical networking systems.
Our integrated circuits and modules consist primarily of application specific
standard products, or ASSPs, which are highly technical standardized products
designed for use by several customers. These ASSPs can also be designed into
custom made higher-level assemblies for insertion into a specific customer
system. When appropriate, we also develop customer-specific components for
strategic customers. We are able to offer our customers proprietary design
skills, an in-depth understanding of high-speed process technologies and a
thorough understanding of next generation optical networking system
requirements. By offering highly integrated products, our customers are able to
concentrate their efforts on their core competencies and introduce optical
networking systems to the market in a shorter time and with more functionality
and greater performance than their competitors.

   We believe we provide our customers with several key benefits, including the
following:

 Sophisticated Products Developed Utilizing Systems Level Expertise

   We provide sophisticated products that meet the functionality requirements
of next generation optical networking equipment. Our systems architects and
design engineers have a thorough understanding of high-bandwidth fiber optic
networking systems applications. This systems level expertise enables us to
anticipate and develop cost-effective next generation component solutions for
our customers. Our products incorporate unique circuit designs that enable
specific systems level functions, such as detecting transmission errors. For
example, our MTC1224 CDR DMUX exhibits superior loss of signal characteristics
that reduce error rates and increase systems efficiency. Alternative solutions
in the market require a more costly and complex design to achieve the same
performance and quality standards.

 High-Speed Products that Meet Next Generation Optical Transmission
 Requirements

   We have an in-depth understanding of high-performance semiconductor and
advanced process technologies. Understanding these technologies enables us to
design high-speed analog, digital and mixed-signal integrated circuits and
modules that operate at speeds of 10 Gb/s or higher. We design our products
utilizing the optimal process technology, such as GaAs, CMOS or SiGe, for a
particular function or product. We are also exploring the use of other
technologies, including InP, for developing higher speed components. We believe
this flexibility is unique and allows us to provide optimal solutions to our
customers, resulting in the rapid introduction of high-speed, next generation
systems. For example, with our MTC1215 MUX, we were the first supplier to
design and manufacture a SiGe component for use in a 12.3 Gb/s fiber optic
transmitter for ultra long-haul transmission systems. This product provides
significantly reduced power consumption and improved performance over competing
products.

 High Level of Component Integration

   Our highly integrated mixed-signal integrated circuits and modules offer
innovative functions that allow our customers to be first-to-market with high
performance fiber optic systems. When we are working with a customer that is
developing and validating a new system that incorporates an important new
function not commercially available from other sources, we first provide a
module-based component composed of multiple discrete integrated circuits. The
module is designed as an integrated package that can be seamlessly placed into
a system providing immediate functionality. As the system transitions to high
volume production, we collaborate with our customers to increase our solution's
level of component integration and functionality, moving from a module-based
solution to a multi-chip or single-chip solution. This higher-level of
component integration reduces the cost and complexity of our customers' systems
and enables them to meet their time-to-

                                       35


market requirements. For example, we have developed a complete three component
solution for the physical layer of an optical transmitter, which is a device
that converts voice and data transmissions carried as electrical signals into
optical signals for transmission over optical fiber. This solution includes a
multiplexer, which combines multiple slower signals into a single high-speed
signal, a limiting amplifier, which amplifies electrical pulses, and a
modulator driver, which amplifies and conditions signals used by another
portion of the optical transmitter. We have further reduced the component
count to two, by integrating the limiting amplifier into the modulator driver.
This new modulator driver, the MTC5525, achieves superior performance by
replacing numerous discrete components with a single, highly integrated
module.

 Faster Time-to-Market

   Competition among network service providers to incorporate the latest
technology into their networks is shortening the cycle for new product
introductions, with each successive generation of communications equipment
being adopted more quickly than the last. As a result, time-to-market has
become a differentiating, competitive factor for communications equipment
manufacturers. Through our systems level and process technology expertise and
our integration capability, we develop sophisticated products that enable our
customers to meet their critical time-to-market requirements.

The Multilink Strategy

   Our goal is to become the leading global supplier of high value component
solutions for optical networking systems. Key elements of our strategy
include:

 Leveraging Core Competencies to Rapidly Introduce Products that Enable Next
 Generation Optical Systems

   We have developed substantial competencies in mixed-signal circuit and
module design and advanced semiconductor process technologies. Many of our
engineers have worked for leading communications equipment manufacturers and
are experienced in the development of communications systems. We intend to
continue providing sophisticated products that meet the requirements of next
generation optical networking systems. We will continue to capitalize on our
design competencies and our integration capabilities to provide our customers
with new modules and higher-level assemblies so they can quickly and cost-
effectively introduce new systems with greater functionality. We will continue
to develop new products using leading-edge technologies that allow us to
transition these modules and higher-level assemblies into highly integrated,
multi-chip or single-chip solutions, enabling us to address our customers'
higher volume production requirements.

 Expanding Our Customer Relationships and the Breadth of Our Customer Base

   We intend to further strengthen our existing customer relationships and
expand our customer base by continuing to target leading edge communications
equipment manufacturers, anticipating their needs through a collaborative
design and development process and providing ongoing, in-depth customer
support. We participate early in the design process of our customers' products
and aid in the design of their future systems architecture. Our application
engineers and marketing personnel work closely with our customers to define
and implement the appropriate solution and to provide continuous support. This
extensive customer interaction allows us to further develop our systems
expertise and to expand the functionality of our products in our customers'
optical networking systems, providing us with a strategic advantage over our
competitors.

 Maintaining and Extending Technology Leadership

   We have established a reputation as a technology leader in the design and
development of components for next generation optical networking systems. We
intend to maintain and extend our technological advantage by further investing
in research and development, focusing on high bit rate component solutions and
vigorously recruiting and retaining talented engineers. We will also continue
to work closely with our foundry partners to drive the development of future
generation process technologies.

                                      36


 Pursuing Strategic Acquisitions and Strategic Relationships

   We intend to pursue strategic acquisitions that provide us with
complementary products and technologies and highly qualified engineering
personnel. We also intend to continue to establish strategic relationships to
expand our technology leadership and secure access to advanced process
technologies. For example, we have entered into a semiconductor development and
a joint development agreement with IBM and a wafer supply agreement with TRW.
We believe that establishing strategic relationships with companies with
products or technologies that we deem complementary to our current and future
offerings will enable us to more effectively penetrate new and existing market
segments and offer our customers additional high value solutions.

 Continuing to Address Both the Core and Metropolitan Portions of the Optical
 Transport Network

   We provide product solutions for optical networking systems in the
innovative and high-growth network core market. We will continue to build on
our expertise in DWDM and long-haul applications for the core of the network.
We have also leveraged this expertise and are providing product solutions for
emerging metropolitan or regional optical networking systems as OC-192 is
beginning to be deployed in this portion of the network.

Customers

   In 2000, we shipped our products to over 30 customers. We sell our
integrated circuits, modules and higher-level assemblies to leading and
emerging communications equipment manufacturers that develop high-speed optical
transport systems. The following is a list of our customers from which we
recognized revenues of $300,000 or more in 2000:


                                                                  
            Alcatel                                                   Nortel
             Ciena                                                      ONI
             Cisco                                                   Optimight
          JDS Uniphase                                               Sycamore
             Lucent                                                    TyCom
            Marconi


   Alcatel, TyCom and Cisco accounted for approximately 49%, 16% and 10% of our
revenues for the three months ended March 31, 2001. Lucent, Alcatel and Cisco
accounted for approximately 34%, 28% and 11% of our revenues in 2000. Lucent,
Alcatel, and TyCom accounted for approximately 36%, 20% and 18% of our revenues
in 1999.

Products

   We design and develop advanced products targeted for use in high bandwidth
optical networking systems. These products consist of integrated circuits,
modules and higher-level assemblies that generate, manipulate, transmit and
receive electrical and optical signals.

   Our products focus on three segments of optical networking systems: the
physical media dependent layer, or PMD, the physical layer and the datalink
layer. Collectively, the products within these segments connect data processing
devices to optical fiber and constitute an integral part of optical networking
systems.

                                       37


   The following is a diagram that shows the different functions required for
fiber optic transmission systems:

                             [DIAGRAM APPEARS HERE]

   PMD layer devices perform the conversion between electrical and optical
signals and can be categorized as either transmitters or receivers.
Transmitters convert voice and data transmissions carried as electrical signals
into optical signals for transmission over optical fiber, while receivers
convert optical signals into electrical signals. Transmitters are composed of
an electrical-to-optical, or E/O, converter, which converts electrical signals
to optical pulses, and a driver, which amplifies and conditions signals for use
by the E/O converter. E/O converters are composed of a light source, or laser,
and an external modulator, which creates individual pulses of light, or optical
signals. Receivers consist of a semiconductor device that converts an optical
signal into electrical pulses, an optical-to-electrical, or O/E, converter, and
a transimpedance amplifier, or TIA, which amplifies these electrical pulses.

   The physical layer is composed of mixed-signal devices, which include both
digital and analog circuits and can be categorized as either multiplexers or
demultiplexers. Multiplexers combine multiple slower signals into a single
high-speed signal, while demultiplexers perform the reverse function.

   Datalink layer devices connect the physical layer to networking equipment.
Datalink devices have three primary functions: framing, mapping and forward
error correction, or FEC. In framing and mapping, which generally occur
simultaneously, data is placed in formatted frames, prior to being transmitted
over fiber, to make the data recognizable at the receiving end of the
transmission. In FEC, data is placed in special frames that can be used to
correct errors that occur during transmission.

 Our Physical Layer Products

   We have broad experience in the production of physical layer products. We
have designed our multiplexers with exceptionally low jitter, which is a type
of noise in optical channels, directly improving signal quality and
transmission distance. We have designed our demultiplexers with highly
sensitive signal processing that eliminates the need for additional components
to perform the same function. Our demultiplexers are highly insensitive to
jitter, allowing for longer optical transmission distances. We are currently
broadening our portfolio of multiplexers and demultiplexers to include product
offerings that incorporate greater functionality, higher-levels of integration,
lower power consumption and tighter integration with our datalink layer
components. We are currently involved in the early stage development of
products that will operate at speeds of 40 Gb/s.

                                       38


   Our physical layer products can incorporate the following functions:

  . Clock Multiplier Unit, or CMU, converts the clock at the input of the
    multiplexers into the higher speed clock needed at the output. Clocks
    synchronize the movement of data throughout communications systems;

  . Input Phase Locked Loop, or IPLL, synchronizes the transfer of data from
    Datalink devices into a multiplexer;

  . Loss of Signal, or LOS, is an alarm that SONET/SDH systems need to
    analyze potential system faults; and

  . Clock and Data Recovery, or CDR, extracts data from the noisy signals
    received from optical systems.

   The following table describes our physical layer products:



      Model                Features and Benefits                   Stage
                                                       
  Multiplexers
- -------------------------------------------------------------------------------
  MTC1203        . incorporates a CMU                         Shipping
                 . low jitter
                 . operates at 9.9 Gb/s
- -------------------------------------------------------------------------------
  MTC1207A/B     Same as MTC1203 plus                         Shipping
                 . lower power consumption
                 . potentially reduces component count of
                   transmitters
                 . operates at 9.9 or up to 10.7 Gb/s
- -------------------------------------------------------------------------------
  MTC1215        . low power flexible device for              Shipping
                   proprietary transport systems
                 . operates from 8.0 to 13.0 Gb/s
- -------------------------------------------------------------------------------
  MTC1233        Same as MTC1207 plus                         Currently
                 . lower power consumption                    Sampling (sending
                 . multifrequency operation reduces           a prototype
                   customer inventory stocking units
                 . operates at 9.9, 10.7 and 12.3 Gb/s        of the product
                 . lower cost packaging                       to a customer for
                 . simpler integration with datalink layer    evaluation)
                   devices due to IPLL


      Model                Features and Benefits                   Stage
                                                       
  Demultiplexers
- -------------------------------------------------------------------------------
  MTC1204        . integrated CDR                             Shipping
                 . very high sensitivity to reduce
                   customer component count
                 . incorporates a LOS
                 . operates at 9.9 Gb/s
- -------------------------------------------------------------------------------
  MTC1224A/B     Same as MTC1204 plus                         Shipping
                 . 4x improvement in sensitivity
                 . input signal processing for special
                   signal from DWDM systems
                 . lower cost packaging
                 . operates at 9.9 or 10.7 Gb/s
- -------------------------------------------------------------------------------
  MTC1210        . flexible device for proprietary            Shipping
                   transport systems
                 . operates from 8.0 to 13.0 Gb/s
- -------------------------------------------------------------------------------
  MTC1234        Same as MTC1224 plus                         Currently
                 . lower power consumption                    Sampling
                 . multifrequency operation reduces
                   customer inventory stocking units
                 . operates at 9.9, 10.7 and 12.3 Gb/s



                                       39




               Model                          Features and Benefits                 Stage
                                                                           
  Clock and Data Recovery
- -------------------------------------------------------------------------------------------
  MTC5585                         . filter-based CDR module with high jitter       Shipping
                                    tolerance
                                  . operates at 9.9 Gb/s
- -------------------------------------------------------------------------------------------
  MTC5589                         Same as MTC5585 except operating at 10.7 Gb/s    Shipping
- -------------------------------------------------------------------------------------------
  MTC5585D                        Same as MTC5585 except operating at 12.3 Gb/s    Shipping
- -------------------------------------------------------------------------------------------
  MTC5590                         CDR that extracts the signal timing from         Shipping
                                   incoming data



 Our PMD Products

   There are two primary types of modulators: crystal-based modulators, which
offer optimal performance for long-haul systems but consume significant power
and cannot be integrated with lasers; and semiconductor-based modulators, which
use less power and can feature on-chip integration with lasers. We currently
produce two drivers for crystal-based modulators. These products have been
designed to improve signal quality and system efficiency. We are investing in
development of future versions of these drivers, integrating more functions and
improving performance.

   The following table describes our PMD products:



               Model                           Features and Benefits                 Stage
                                                                            
  Crystal-Based Modulator Drivers
- ------------------------------------------------------------------------------------------
  MTC5515                          . easy system integration                      Shipping
                                   . operates at 10 Gb/s
- ------------------------------------------------------------------------------------------
  MTC5525                          . higher output voltage ensures better system  Shipping
                                     performance
                                   . higher sensitivity allows operations with a
                                     wider variety of multiplexers
                                   . special input circuitry allows easier
                                     system integration
                                   . built in level control eases use in high-
                                     channel count DWDM systems
                                   . operates at 10 Gb/s
- ------------------------------------------------------------------------------------------
  MTC5527                          Same as MTC5525 plus                           Sampling
                                   . lowest power consumption with these          in 2001
                                     features
                                   . operates at 10 Gb/s



 Datalink Products

   We are currently investing in the development of numerous datalink layer
products, including FEC devices and Framer/Mappers that integrate the framing
and mapping functions. In FEC, we have invested heavily in algorithm,
architecture and product development for both standards-based FEC and advanced
FEC. FEC allows communications equipment manufacturers to increase the number
of DWDM optical channels in a fiber strand and/or to increase the length of the
fiber transmission system. In addition, FEC devices can be designed to support
new optical networking standards.

   We are currently sampling our first FEC device for 10 Gb/s systems, the
MTC6130. Future FEC products will address higher performance and/or higher bit
rates. Framer/Mappers in development include advanced products for 10 Gb/s and
40 Gb/s systems.

                                       40




               Model                          Features and Benefits                 Stage
                                                                           
  Forward Error Correction
- --------------------------------------------------------------------------------------------
  MTC 6130                        . approximately doubling number of channels      Currently
                                    or distance                                    Sampling
                                  . standards-based design
                                  . enhanced performance monitoring
- --------------------------------------------------------------------------------------------


Technology

   One of our primary competitive advantages is our technological expertise.
Our engineers have expertise in DWDM and SONET/SDH systems, mixed-signal
architecture and design, digital integrated circuit architecture and high-speed
module and higher-level assembly. We also have access to advanced integrated
circuit technologies and processes. Together, these capabilities have enabled
us to provide our customers with highly integrated and multifunctional
products.

   Systems Level Knowledge. Our key engineers have extensive systems level
expertise and are intimately familiar with the requirements of and challenges
faced by our customers. We apply our systems level expertise by collaborating
with our customers in the early design phase of systems development. We also
have a fiber optic test facility that simulates real-world conditions to verify
that our products meet the stringent demands of optical networking systems.

   Mixed-Signal Circuit Design. Our team of mixed-signal engineers and
architects has developed numerous analog and mixed-signal integrated circuits
for the communications industry and has extensive expertise working with
advanced high-speed process technologies. Our team has an in-depth
understanding of the physics of these process technologies and the ability to
develop and extend existing process models that allow high first-pass success
rates in new leading-edge process technologies.

   Digital Circuit Design. The requirements for developing digital integrated
circuits for the high-speed optical networking systems are very demanding and
require a number of dedicated skills. Our engineers have the expertise and
experience to define and develop complex architectures, often based on advanced
algorithms. We believe that this expertise enables our digital integrated
circuits design engineers to develop superior integrated circuits for advanced
networking functions such as FEC. We have recruited a dedicated engineering
team that applies advanced process technologies, design methodologies and tools
in order to develop and verify highly complex integrated circuits that operate
at very high-speeds.

   Module and Higher-Level Assembly Integration. We have extensive experience
integrating components into high-speed higher-level assemblies. At speeds such
as OC-192, the complexity of circuit boards increases significantly, thereby
requiring greater skill and precision in design and fabrication. This skill and
precision necessitates specialized expertise in microwave circuit and systems
design, fiber optic systems knowledge and package technologies. Our team
includes senior level engineers with expertise in each of these necessary
areas.

   Process Technology. We have access to and expertise in leading-edge process
technologies for high-speed integrated circuits development. We have
established long-term relationships with suppliers that provide access to
leading technologies. These advanced process technologies include Gallium
Arsenide Heterojunction Bipolar Transistor, or GaAs HBT, High-Electron Mobility
Transistor, or HEMT, SiGe HBT and fine-geometry CMOS. We design our products
using the best process technology to meet the price and performance
requirements of our customers.

Strategic Relationships

   We have established strategic relationships with both TRW and IBM. We have
entered into these strategic relationships with the objective of building and
maintaining relationships with leading suppliers of

                                       41


semiconductor process technologies in order to diversify our product and
technology base. In June 1997, we entered into a supply agreement with TRW
pursuant to which TRW supplies us with a certain number of processed GaAs
wafers annually for a fixed price per wafer. The agreement was amended in June
1999 to revise the wafer delivery requirement. In October 2000, we entered into
a short-term foundry agreement with TRW to purchase Indium Phosphide
development wafers or wafers designed using Indium Phosphide technology, for a
fixed price per wafer. This agreement was amended in November 2000 and December
2000 to revise the number of development wafers to be purchased. During May
2000, we entered into a series of agreements with IBM. Our semiconductor
development agreement with IBM provides us with certain models and design kits
for use in the fabrication process to develop new integrated circuits. We
provide IBM with prototype designs, and IBM fabricates mask sets corresponding
to our designs, schedules wafers starts and processes the wafers. In exchange
for IBM's development efforts and access to their fabrication process, we make
certain fixed payments to IBM. Under our joint development agreement with IBM,
pursuant to which we licensed to IBM and IBM licensed to us, certain
technology, we jointly develop integrated circuits. We are both permitted to
sell the jointly created products to third parties, subject to a fixed royalty
fee payable to the other party. For each joint product produced, the royalty
payment obligation continues for a period of seven years after the first sale
of such joint product. The terms of the IBM agreements are intended to serve
our strategic objectives by providing us with access to key technologies, such
as SiGe and CMOS, which are instrumental in the development of our business.
Additionally, the IBM agreements allow us to pool resources and share the cost
of costly development projects.

Sales, Marketing and Customer Support

 Sales

   We target leading and emerging communications equipment manufacturers that
develop high-speed optical transport networking systems. We manage the sales
process by interacting with our customers at multiple layers of our
organization. Our initial contact with a potential customer generally begins
with either direct contact by our management or sales force or through third-
party manufacturers' or independent sales representatives. Our strategic
account managers and marketing personnel manage the customer relationship
throughout the pre- and post-sales process. As needed, systems engineering
personnel have detailed technical interactions with our customers during
product definition. Our application engineers assist the customer in designing
the solution into the customer's systems. Close interaction further enables us
to establish strategic customer programs or relationships.

   We sell our products through our direct sales force and through independent
sales representatives working under the direction of our strategic account
managers. As of March 31, 2001, our direct sales force consisted of 23 direct
sales professionals, application engineers, managers and administrative
personnel located at our headquarters in Somerset, New Jersey and in Bochum,
Germany. We expect to open additional sales offices and to increase our direct
sales force worldwide.

 Marketing

   We market our products extensively in North America and Europe to establish
our visibility as a leading supplier of high value components for optical
networking systems. As of March 31, 2001, our marketing staff included 15
marketing professionals and administrative personnel. Our marketing activities
include:

  . seminar programs, trade shows, guest speaker invitations and technical
    conferences;

  . public relations activities and customer events;

  . advertising, technical articles in industry publications and marketing
    collateral materials; and

  . communication on the Internet.

                                       42


 Customer Service and Support

   Our customer support activities are primarily managed by our applications
engineering group consisting of both field applications engineers and internal
applications experts. This group supports customers during their design
activities to facilitate our customers' success, and can perform experiments to
validate customers' design ideas including insertion into our fiber optic test
facility. Our philosophy is to provide comprehensive customer support to
facilitate the design of our complex products into our customers' systems. Our
applications engineering group is also the initial point of contact for our
customers should they experience any problems with a product after purchase.

Operations and Manufacturing

   We outsource the fabrication and assembly of most of our semiconductor
devices. We have in-house semiconductor testing capabilities that allow us to
develop and perform testing for low and medium volume production. We expect to
gradually outsource our testing from our in-house capabilities to outside
vendors for higher volume production. As a fabless semiconductor company, we
are able to concentrate our resources on the design, development and marketing
of our products.

 Wafer Manufacturing

   We outsource substantially all of our semiconductor fabrication to several
of the world's leading foundries for high bit-rate technologies including TRW,
IBM, United Monolithic Semiconductors and TriQuint Semiconductor. Our mixed-
signal products, which comprise a significant portion of our current revenues,
are based predominantly on GaAs HBT wafers supplied by TRW. TRW is our sole
supplier of these wafers. Our manufacturing strategy is to qualify and utilize
leading process technology for the fabrication of high bit-rate semiconductor
devices and to utilize our foundries for a variety of different semiconductor
technologies. There are certain risks associated with our dependence upon
external foundries, including reduced control over delivery schedules, quality
assurance, manufacturing yields and costs, the potential lack of adequate
capacity during periods of excess demand, limited warranties on wafers or
products supplied to us, increases in the prices and potential misappropriation
of our intellectual property. Under our supply agreement with TRW, we do not
have the contractual right to obtain all the GaAs HBT wafers we require for the
current production of our mixed-signal products. Finding alternative sources
for these wafers will result in substantial delays in production and additional
costs. We do not have long-term wafer supply agreements with any other outside
foundries that guarantee wafer or product quantities, prices or delivery lead
times.

 Packaging, Assembly and Testing

   The primary vendors for the packaging, assembly and testing of our
integrated circuit products are ASAT in Nancy, France, Elmo Semiconductor, a
division of Kimbell Electronics and Natel. The primary outsource vendor for the
assembly and testing of our driver module products is Natel.

   We operate in-house module manufacturing facilities that allow rapid
prototyping and development of new products and also serve to complement our
outsource module manufacturing partners. We have in-house module and integrated
circuits testing facilities in California, New Jersey and Germany. We maintain
comprehensive review and inspection of our outsourcing facilities to ensure
compliance with our quality standards for manufacturing assembly and test. Our
manufacturing processes and outsource vendors utilize stringent quality
controls, including incoming material inspection, in-process testing and final
test.

Research and Development

   We have assembled a team of experienced engineers and technologists with
significant experience in their fields of expertise. As of March 31, 2001, we
had 159 employees dedicated to research and development, of whom 93 hold
advanced degrees, including 27 PhDs. We have an additional 57 engineering
employees dedicated to marketing, application engineering and business
development, of whom 31 hold advanced degrees, including four PhDs. These
employees are involved in advancing our core technologies and applying these
core technologies to product development and activities in our targeted
markets.

                                       43


   We believe that the achievement of higher-levels of integration,
functionality and performance and the introduction of new products in our
target markets is essential. As a result, we have made and will continue to
make substantial investments in research and development. Our research and
development expense, exclusive of deferred stock compensation and warrant
issuances, for the three months ended March 31, 2001 was approximately $12.5
million. Our research and development expenses, exclusive of deferred stock
compensation and warrant issuances, for 2000, 1999 and 1998 were approximately
$24.6 million, $8.8 million and $2.2 million, respectively.

Competition

   We compete with component suppliers for optical networking systems. We
believe that the principal factors of competition for these markets are:

  . product time-to-market;

  . product performance;

  . product price;

  . product quality;

  . product reliability;

  . success in designing and subcontracting the manufacture of new products
    that implement new technologies;

  . market acceptance of competitors' products;

  . efficiency of production;

  . expansion of production of our products for particular systems
    manufacturers; and

  . customer support and reputation.

   We believe we compete favorably with respect to each of these factors.

   We compete with a number of major domestic and international suppliers. We
compete primarily against Agere, Applied Micro Circuits, Conexant, Giga
(acquired by Intel), Infineon, JDS Uniphase, Maxim, Nortel (microelectronics
division), NTT Electronics, Philips, PMC-Sierra and Vitesse. In certain
circumstances, most notably with respect to application specific integrated
circuits, or ASICs, supplied to Lucent and Nortel, our customers or potential
customers have internal integrated circuit and/or manufacturing capabilities.

   In addition, suppliers may begin to offer product solutions increasingly
including both electronic and optical components. This creates the potential
that suppliers of optical components, which are currently complementary to
suppliers of electronic components, may become competitors as they broaden
their product portfolio with electronic components, or vice versa. Companies
with existing capabilities or products in both areas may benefit from
significant competitive advantages.

Intellectual Property

   We rely on a combination of copyright, patent, trademark, trade secret and
other intellectual property laws, nondisclosure agreements and other protective
measures to protect our proprietary rights. We also utilize unpatented
proprietary know-how and trade secrets and employ various methods to protect
such intellectual property. To date, we have one U.S. patent issued and three
U.S. patent applications pending.

   Although we employ a variety of intellectual property in the development and
manufacturing of our products, we believe that none of such intellectual
property is individually critical to our current operations. However, taken as
a whole, we believe our intellectual property rights are significant and that
the loss of all or a substantial portion of such rights could have a material
adverse effect on our results of operations. There can

                                       44


be no assurance that our intellectual property protection measures will be
sufficient to prevent misappropriation of our technology. In addition, the laws
of many foreign countries do not protect our intellectual properties to the
same extent as the laws of the United States. From time to time, we may desire
or be required to renew or to obtain licenses from others in order to further
develop and market commercially viable products effectively. There can be no
assurance that any necessary licenses will be available on reasonable terms.

Employees

   As of March 31, 2001, we had a total of 362 employees, including 38 in sales
and marketing and application engineering, 127 in manufacturing, purchasing and
quality, 159 in research and development and 38 in general and administrative
functions. Of these employees, approximately 275 were located in the United
States, 58 were located in Europe and 29 were located in Israel. None of our
employees is represented by a collective bargaining agreement, nor have we
experienced any work stoppage. We consider our relations with our employees to
be good.

Facilities

   Our corporate headquarters facility, of approximately 36,000 square feet, is
located in Somerset, New Jersey. We lease our corporate headquarters facility
pursuant to a sublease agreement that expires in April 2007 for approximately
12,000 square feet and pursuant to a lease agreement that expires in October
2005 for approximately 24,000 square feet. We also lease our principal design
facility, consisting of approximately 31,000 square feet, in Somerset, New
Jersey, pursuant to a lease agreement that expires in June 2006. We lease
approximately 29,601 square feet of design space in Santa Monica, California
pursuant to a lease agreement that expires in December 2005. We also lease
approximately 3,214 square feet of laboratory and office space in Carson,
California on a month-to-month basis pursuant to the terms of a lease that
expired in August 2000.

   In addition, we have lease agreements for an approximately 1,100 square
meter facility in Bochum, Germany, which expires in January 2011, an
approximately 1,800 square meter facility in Munich, Germany, which expires in
December 2005, an approximately 500 square meter facility in Berlin, Germany,
which expires in December 2005, an approximately 36 square meter facility in
Kaunas, Lithuania, which is month-to-month, an approximately 50 square meter
facility in Vilnius, Lithuania, which is month-to-month and an approximately
1,200 square meter facility in Israel, of which 300 square meters expires in
each of February 2003 and May 2003 and 600 square meters expires in January
2004.

Legal Proceedings

   In May 2001, counsel to an employee and shareholder, Matthias Bussmann,
wrote a letter to us in which Dr. Bussmann claimed that our president, chief
executive officer and co-chairman, Dr. Richard Nottenburg, and our executive
vice president and co-chairman, Dr. Jens Albers, breached an oral promise made
by them to him on our behalf relating to awards of stock options and certain
salary arrangements. In the letter, Dr. Bussmann indicated that he will not
pursue this matter if we pay him approximately $1.0 million in cash and if
Drs. Nottenburg and Albers transfer options that they have to purchase an
aggregate of one million shares of Class A common stock. No further claims were
made in this letter.

   In June 2001, we received a letter from Dr. Bussmann's counsel asserting
that our filings with the Securities and Exchange Commission were misleading
because they mischaracterized Dr. Bussmann's claims. The letter stated that our
filings understated the gravity of Dr. Bussmann's claims, but it did not
specify damages or make an additional demand for compensation. The letter
stated that Dr. Bussmann's claims are significant and form the basis for a
claim of breach of fiduciary duty by Drs. Nottenburg and Albers and, in
particular, that Drs. Nottenburg and Albers misused their power to reward
themselves and engaged in a scheme to oust Dr. Bussmann from our company. The
letter further alleged defamation and discrimination. We subsequently received
another letter from Dr. Bussmann's counsel stating that Dr. Bussmann's proposed
settlement offer consists of a $1.0 million cash payment and the transfer of
one million shares of common stock by us, an exemption from the 180 day lock-up
period and the registration of Dr. Bussmann's shares.

   While we believe the allegations set forth in Dr. Bussmann's letters to us
are without merit, we cannot predict the ultimate outcome of any litigation,
should it be initiated.

                                       45


                                   MANAGEMENT

Executive Officers and Directors

   The following table sets forth certain information regarding our executive
officers and directors as of the date of this prospectus:



Name                     Age                           Position
- ----                     ---                           --------
                       
Richard N. Nottenburg...  47 President, Chief Executive Officer and Co-Chairman
Jens Albers ............  37 Executive Vice President and Co-Chairman
Eric M. Pillmore........  47 Senior Vice President, Chief Financial Officer and Secretary
Ronald M. Krisanda......  39 Senior Vice President--Operations
Craig S. Lewis..........  37 Senior Vice President--Sales
G. Bradford Jones.......  46 Director(1)
John Walecka ...........  41 Director(2)
Stephen R. Forrest .....  51 Director(2)
Edward J. Zander........  54 Director(1)(2)

- ---------------------
(1) Member of the Audit Committee of the Board of Directors

(2) Member of the Compensation Committee of the Board of Directors

   Richard N. Nottenburg. Dr. Nottenburg is one of our founders and has been
our President since our inception in 1994. He also serves as our Chief
Executive Officer and Co-Chairman of the Board. Dr. Nottenburg has over 20
years of experience in the design and development of high bit-rate electronics.
He is an internationally recognized expert in advanced integrated circuit
technologies and in the design of fiber-optic communications integrated
circuits. Dr. Nottenburg was an associate professor of electrical engineering
at the University of Southern California from 1991 to 1999. From 1984 to 1991,
Dr. Nottenburg worked at AT&T Bell Labs (now Lucent Technologies, Inc.) and
Bell Communications Research. In 1990, Dr. Nottenburg became a Distinguished
Member of the technical staff of AT&T Bell Labs. He received his doctoral
degree in electrical engineering from the Swiss Federal Institute of
Technology.

   Jens Albers. Dr. Albers is one of our founders. He also serves as our
Executive Vice President and Co-Chairman of the Board. He founded our foreign
subsidiaries and previously worked as our Vice President for Business
Development and Vice President for European Operations and Strategic Planning.
From 1993 to 1995, Dr. Albers was a consultant, and, in 1994 and 1995, served
as a Managing Director for Micram Microelectronic GmbH, Bochum, Germany. From
1988 to 1997, Dr. Albers worked in the Department for Semiconductor Devices and
Circuits at Ruhr-University in Bochum, Germany. Dr. Albers has extensive design
and development experience in fiber-optic communication integrated circuits. He
received his doctoral degree in electrical engineering from Ruhr-University,
Bochum, Germany.

   Eric M. Pillmore. Mr. Pillmore has been our Senior Vice President and Chief
Financial Officer since July 2000. From April 2000 to May 2000, he was Chief
Financial Officer and Vice President Finance and Administration for McData
Corporation. From January 2000 to April 2000, he was Senior Vice President,
Finance and Director, Broadband Communications Sector of Motorola Corporation,
the successor by acquisition to General Instrument Corporation, or GI. From
March 1996 to January 2000, Mr. Pillmore worked for GI, ultimately holding the
position of Senior Vice President, Finance and Chief Financial Officer. From
March 1996 to November 1996, Mr. Pillmore was Vice President, Finance of GI.
From January 1994 to February 1996, he was Manager, Finance of the Plastics
Americas Division of General Electric Company. He was Manager, Finance of GE
Medical Systems Asia, Ltd. from March 1992 to January 1994 and Director,
Finance of GE/Yokogawa Medical Systems, Ltd. from June 1991 to February 1994.
Mr. Pillmore received his bachelors degree in business administration from the
University of New Mexico.

                                       46


   Ronald M. Krisanda. Mr. Krisanda has been our Senior Vice President of
Operations since November 2000. From January 2000 to November 2000, he was Vice
President and General Manager Asia Operations, Broadband Communications Sector
of Motorola Corporation, the successor by acquisition to General Instrument
Corporation, or GI, in January 2000. From May 1996 to December 1999, Mr.
Krisanda worked for GI, ultimately holding the position of Vice President and
General Manager of General Instrument of Taiwan Ltd. From May 1996 to June
1997, Mr. Krisanda was Director of Operations, Digital Networks Systems of GI.
From February 1990 to April 1996, Mr. Krisanda worked for the Electronics
Division of Ford Motor Company, ultimately holding the position of Manager
Advanced Manufacturing Technology. From September 1984 to January 1990, he
worked for the Climate Control Division of Ford Motor Company holding a variety
of engineering, operations, and supply chain positions. Mr. Krisanda received a
B.S. in Mechanical Engineering from Clarkson University, and an M.S. in
Manufacturing Systems Engineering from Lehigh University.

   Craig S. Lewis. Mr. Lewis has been our Senior Vice President of Sales since
January 2001. From April 1997 to January 2001, he worked for Cadence Design
Systems, ultimately holding the title of Vice President, Worldwide Enterprise
Accounts and Alliances Group. From June 1995 to April 1997, Mr. Lewis was Sales
Director, Eastern Region for Sierra Semiconductor. He was the Area Sales
Manager, Mid-Atlantic and Southeast US Region for Cirrus Logic from 1991 to
June 1995. He received his B.S. in Computer Systems Engineering from Renssalaer
Polytechnic Institute.

   G. Bradford Jones. Mr. Jones has been one of our directors since June 1999.
Mr. Jones is a founding partner of Redpoint Ventures, formed in October 1999,
and a general partner with Brentwood Venture Capital, a firm he joined in 1981.
Mr. Jones also currently serves on the board of directors of Digital Island,
Stamps.com, Onyx Acceptance Corporation and several other privately held
companies. Mr. Jones received his B.S. in chemistry from Harvard University,
his masters degree in physics from Harvard University and his J.D. and M.B.A.
from Stanford University.

   John Walecka. Mr. Walecka has served as one of our directors since June
1999. Mr. Walecka is a founding partner of Redpoint Ventures, formed in October
1999, and a general partner with Brentwood Venture Capital, a firm he joined in
1984. Mr. Walecka also currently serves as a member of the board of directors
of Netro Corporation, Vitria Technology, Inc., and several privately held
companies. Mr. Walecka received a B.S. and an M.S. in engineering from Stanford
University and an M.B.A. from the Stanford Graduate School of Business.

   Stephen R. Forrest. Dr. Forrest has served as one of our directors since
June 1999. Dr. Forrest has been a professor of electrical engineering at
Princeton University since 1992 and has served as the Chairman of Princeton's
Department of Electrical Engineering since 1997. From 1992 to 1997, Dr. Forrest
served as the Director of the Center for Photonics and Optolectronic Materials
at Princeton University, and from 1989 to 1992, he served as the Director of
the National Center for Integrated Photonic Technology. From 1985 to 1992, Dr.
Forrest was professor of electrical engineering at the University of Southern
California. Dr. Forrest is the author of approximately 280 papers published in
professional journals and holds approximately 50 patents in the areas of
organic thin film materials and devices and semiconductor photonic materials
and devices. Dr. Forrest received his masters and doctoral degrees in physics
from the University of Michigan.

   Edward J. Zander. Mr. Zander has served as one of our directors since
October 2000, and has more than 25 years of expertise in the computer business,
including extensive experience in engineering, marketing and executive
management. Since April 1999, Mr. Zander has served as President and Chief
Operating Officer at Sun Microsystems, or Sun, and was Vice President and Chief
Operating Officer from April 1998 to April 1999. Mr. Zander runs Sun's day-to-
day business operations, including: system products, storage products, software
products and platforms, enterprise services, network service provider services,
iPlanet, Sun's alliance with AOL's Netscape division, research and development,
including the office of the CTO, customer advocacy, and worldwide
manufacturing, purchasing, marketing and sales operations. In his previous
positions at Sun, Mr. Zander served as president of Sun Microsystems Computer
Company from February 1995 to April 1998, managing development, manufacturing
and marketing for the network computing systems organization, and as president
of Sun's software group from July 1991 to February 1995, developing and
marketing Solaris for

                                       47


enterprise and network computing applications. Before joining Sun in October
1987 as vice president of corporate marketing, Mr. Zander was vice president of
marketing for Apollo Computer, developing marketing strategies for the emerging
workstation industry. He serves on the boards of directors of the Jason
Foundation for Education, Documentum Inc., Portal Software, Inc., Rhythms
NetConnections Inc. and the Science Advisory Board of Rensselaer Polytechnic
Institute, or R.P.I. Mr. Zander earned a B.S.E.E. from R.P.I. and an M.B.A.
from Boston University.

Board of Directors

   Our board of directors consists of six members. Each director holds office
until his or her successor is duly elected and qualified.

 Committees

   Our board of directors has an audit committee and a compensation committee.

   Audit Committee. The audit committee makes recommendations to the board of
directors regarding the selection of independent accountants, reviews the
results and scope of audit and other services provided by our independent
accountants and reviews and evaluates the audit and control functions. The
audit committee currently consists of Mr. Jones and Mr. Zander. Additionally,
the board of directors will add an additional qualified independent director no
later than 90 days after the initial public offering of our Class A common
stock for the purpose of serving on the board of directors and as a member of
the audit committee.

   Compensation Committee. The compensation committee reviews and makes
recommendations regarding our stock plans and makes decisions concerning
salaries and incentive compensation for our executive officers. The
compensation committee currently consists of Dr. Forrest, Mr. Zander and Mr.
Walecka.

 Compensation Committee Interlocks and Insider Participation

   Our board of directors established the compensation committee in September
2000. Prior to establishing the compensation committee, our board of directors
as a whole performed the functions delegated to the compensation committee,
including participating in deliberations concerning executive officer
compensation. During the last fiscal year, no member of our board of directors
or compensation committee served as a member of the board of directors or
compensation committee of any entity that has one or more executive officers
serving as a member of our board of directors or compensation committee.

 Director Compensation

   Our directors are reimbursed for expenses incurred in connection with
attending board and committee meetings but are not otherwise compensated for
their services as board members. Effective upon the closing of this offering,
non-employee board members will receive a series of option grants over their
period of board service. Each individual who first becomes a non-employee board
member at any time on or after the effective date of this offering will receive
a non-statutory option grant for 50,000 shares of Class A common stock on the
date such individual joins the board, provided such individual has not been in
our prior employ. In addition, on the date of each annual stockholders meeting
held after the effective date of this offering, each non-employee board member
who is to continue to serve as a non-employee board member (including the
individuals who are currently serving as non-employee board members) will
automatically be granted a non-statutory option to purchase 10,000 shares of
Class A common stock, provided such individual has served on the board for at
least six months. There will be no limit on the number of such 10,000 share
option grants any one eligible non-employee board member may receive over his
or her period of continued board service, and non-employee board members who
have previously been in our employ will be eligible to receive one or more such
annual option grants over their period of board service.

                                       48


Executive Officers

   Our executive officers are elected by, and serve at the discretion of, our
board of directors. There are no family relationships among our directors and
executive officers.

 Compensation

   The following table sets forth all compensation paid or accrued during the
year ended December 31, 2000 to our Chief Executive Officer and our other
executive officers who earned more than $100,000 during 2000. In accordance
with the rules of the Securities and Exchange Commission, the compensation
described in this table does not include perquisites and other personal
benefits received by the executive officers named in the table below which do
not exceed the lesser of $50,000 or 10% of the total salary and bonus reported
for these officers.



                                                                    Long-Term
                                         Annual                    Compensation
                                      Compensation                    Awards
                                    -----------------              ------------
                                                                    Securities
                                                       All Other    Underlying
    Name and Principal Position      Salary   Bonus   Compensation   Options
    ---------------------------     -------- -------- ------------ ------------
                                                       
Richard N. Nottenburg(1)........... $250,071 $218,000   $137,573          --
 Co-Chairman, President and Chief
  Executive Officer
Jens Albers(2)..................... $235,195 $281,064     $6,240          --
 Co-Chairman and Executive Vice
  President
Eric M. Pillmore(3)................ $ 99,519 $100,000        --     1,000,000
 Senior Vice President, Chief
 Financial Officer and Secretary
Ronald M. Krisanda(4).............. $ 17,308 $100,000        --       400,000
 Senior Vice President--Operations
Craig S. Lewis(5)..................      --       --         --           --
 Senior Vice President--Sales

- ---------------------
(1) All other compensation includes $135,778 paid to Mr. Nottenburg for
    relocation expenses and the income taxes thereon.

(2) Bonus includes $99,179 that pertains to 1998 but was not paid until 2000.

(3) Mr. Pillmore joined us on July 17, 2000. If Mr. Pillmore had been with us
    the entire year, his annualized salary in 2000 would have equaled $225,000.

(4) Mr. Krisanda joined us on November 27, 2000. If Mr. Krisanda had been with
    us the entire year, his annualized salary in 2000 would have equaled
    $225,000.

(5) Mr. Lewis joined us on January 17, 2001. Mr. Lewis' current annual salary
    is $225,000.

 Option Grants in 2000

   During 2000, we granted options to purchase an aggregate of 14,205,200
shares of our Class A common stock to our employees, directors and consultants.
All options were granted under our 1998 Stock Option Plan and our 1999 Stock
Option Plan at exercise prices equal to the fair market value of our Class A
common stock on the date of grant, as determined in good faith by our board of
directors.

                                       49


   The following table sets forth information concerning individual grants of
stock options made during 2000 to each of the executive officers named in the
compensation table. The 5% and 10% assumed annual rates of compounded stock
price appreciation are mandated by rules of the Securities and Exchange
Commission and do not represent our estimate or projection of our future stock
prices. The potential realizable values are calculated by assuming that the
initial public offering price of $9.00 per share was the fair market value of
our shares of common stock at the time of grant, that the shares of Class A
common stock appreciate at the indicated rate for the entire term of the option
and that the option is exercised at the exercise price and sold on the last day
of the option term at the appreciated price.



                                     Individual Grants                    Potential
                         ------------------------------------------   Realizable Value
                                    % of Total                       at Assumed Rates of
                         Number of   Options                             Stock Price
                         Securities Granted to                        Appreciation for
                         Underlying Employees  Exercise                  Option Term
                          Options   in Fiscal  Price Per Expiration ---------------------
                          Granted      Year      Share      Date        5%        10%
                         ---------- ---------- --------- ---------- ---------- ----------
                                                             
Richard N. Nottenburg...       --       --         --          --          --         --
Jens Albers.............       --       --         --          --          --         --
Eric M. Pillmore(1)..... 1,000,000     7.11%     $2.50    07/17/10  12,160,000 20,840,000
Ronald M. Krisanda(2)...   400,000     2.85%     $5.75    11/27/10   3,564,000  7,036,000
Craig S. Lewis(3).......       --       --         --          --          --         --

- ---------------------
(1) 333,333 of the shares subject to this option vest on the first anniversary
    of the date of grant. The remainder of the shares subject to this option
    vest at the rate of 1/24 per month commencing one month following the first
    anniversary of the date of grant.

(2) 50,000 of the shares subject to this option vest on each of the six-month
    and one-year anniversaries of the date of grant. One-third of the remainder
    of the shares subject to this option vest each year for three years
    beginning with the second anniversary of the date of grant.

(3) Mr. Lewis joined us on January 17, 2001. Mr. Lewis was granted an option to
    purchase 800,000 shares of the Company's Class A common stock at an
    exercise price of $5.75. 200,000 of the shares subject to this option
    vested immediately upon grant. One-third of the remainder of the shares
    subject to this option vest each year for three years beginning with the
    second anniversary of the date of grant.

 Aggregate Option Exercises in 2000 and Year-End Option Values

   None of our executive officers exercised any options in 2000. The following
table sets forth the number and value of securities underlying unexercised
options held by each of our executive officers as of December 31, 2000. The
value of unexercised in-the-money options at 2000 year end has been calculated
on the initial public offering price of $9.00 per share, less the applicable
exercise price per share, multiplied by the number of shares underlying the
options.



                                     Number of
                               Securities Underlying     Value of Unexercised
                              Unexercised Options at    In-the-Money Options at
                                 December 31, 2000         December 31, 2000
                             ------------------------- -------------------------
                             Exercisable Unexercisable Exercisable Unexercisable
                             ----------- ------------- ----------- -------------
                                                       
Richard N. Nottenburg.......  1,875,000    4,725,000   $16,123,750  $40,451,250
Jens Albers.................  1,600,000    4,200,000    13,747,500   35,962,500
Eric M. Pillmore............        --     1,000,000           --     6,500,000
Ronald M. Krisanda..........        --       400,000           --     1,300,000
Craig S. Lewis(1)...........        --           --            --           --

- ---------------------
(1) Mr. Lewis joined us on January 17, 2001.

                                       50


Employee Benefit Plans

 1998 Stock Option Plan

   Our board of directors adopted the 1998 Stock Option Plan in June 1998. Our
shareholders approved the 1998 plan in February 1999. The 1998 plan was amended
in January 1999 and in July 2000. A total of 24,000,000 shares of Class A
common stock have been authorized and reserved for issuance under the
1998 plan. As of June 19, 2001, options to purchase an aggregate of 21,349,917
shares were outstanding, 2,561,750 shares were available for option grants and
88,333 shares of Class A common stock had been issued upon exercise of options
under the 1998 plan. All outstanding options under the 1998 plan will be
transferred to and administered under the successor 2000 Stock Incentive Plan
upon completion of this offering, and no further option grants will be made
under the 1998 plan.

   Prior to September 2000, the board of directors administered the 1998 plan.
Since its formation in September 2000, the compensation committee has
administered the 1998 plan. Under the 1998 plan, key employees and non-employee
members of the board have been granted options to purchase shares of Class A
common stock. The plan administrator had complete discretion to determine which
eligible individuals will receive option grants, determine the type, number,
vesting requirements and other features and conditions of option grants,
interpret the 1998 plan and make all other decisions relating to the operation
of the 1998 plan.

   Options granted under the 1998 plan were either incentive stock options
within the meaning of Section 422 of the Internal Revenue Code, which permits
the deferral of taxable income related to the exercise of these options, or
non-statutory options not entitled to this deferral. Incentive stock options
were only granted to employees and the term of an incentive stock option could
not exceed ten years. The exercise price of incentive stock options granted
under the 1998 plan were less than 100% of the fair market value of the Class A
common stock on the date of grant, and the exercise price for non-statutory
stock options were determined by the plan administrator on the grant date. The
exercise price for the shares of Class A common stock subject to the option
grants made under the 1998 plan may be paid in cash or check.

 1999 Stock Option Plan

   Our board of directors adopted the 1999 Stock Option Plan in June 1999. Our
shareholders approved the 1999 plan in May 2000. The 1999 plan was amended in
September 1999, July 2000, August 2000 and January 2001. A total of 21,000,000
shares of Class A common stock have been authorized and reserved for issuance
under the 1999 plan. As of June 19, 2001, options to purchase an aggregate of
20,696,200 shares were outstanding, 189,050 shares were available for option
grants and 114,750 shares of Class A common stock had been issued upon exercise
of options under the 1999 plan. All outstanding options under the 1999 plan
will be transferred to the successor 2000 Stock Incentive Plan upon completion
of this offering, and no further option grants will be made under the 1999
plan.

   Prior to September 2000, the board of directors administered the 1999 plan.
Since its formation in September 2000, the compensation committee has
administered the 1999 plan. Under the 1999 plan, employees, non-employee
members of the board and consultants were granted options to purchase shares of
Class A common stock. The plan administrator had complete discretion to
determine which eligible individuals were to receive option grants, determine
the type, number, vesting requirements and other features and conditions of
option grants, interpret the 1999 plan and make all other decisions relating to
the operation of the 1999 plan.

   Options granted under the 1999 plan were either incentive stock options or
non-statutory options. Incentive stock options were only granted to employees
and the term of an incentive stock option could not exceed ten years. The
exercise price of incentive stock options granted under the 1999 plan were in
no event less than 100% of the fair market value of the Class A common stock on
the date of grant, and the exercise price for non-statutory stock options was
determined by the plan administrator on the grant date.

                                       51


 2000 Stock Incentive Plan

   Introduction. The 2000 Stock Incentive Plan is intended to serve as the
successor program to our 1998 Stock Option Plan and our 1999 Stock Option Plan.
The 2000 plan was adopted by our board of directors in August 2000 and amended
in January 2001 and February 2001. Our shareholders approved the 2000 plan in
June 2001. The 2000 plan will become effective upon completion of this
offering. At that time, all outstanding options under our existing 1998 Stock
Option Plan and our 1999 Stock Option Plan will be transferred to the 2000
plan, and no further option grants will be made under the 1998 plan or the 1999
plan. The transferred options will continue to be governed by their existing
terms, unless our compensation committee decides to extend one or more features
of the 2000 plan to those options.

   Share Reserve. We have authorized up to 49,286,606 shares of our Class A
common stock for issuance under the 2000 plan. This share reserve consists of
the number of shares we estimate will be carried over from the 1998 plan and
the 1999 plan plus an increase of 4,286,606 shares. The share reserve under our
2000 plan will automatically increase on the first trading day in January each
calendar year, beginning with calendar year 2002, by an amount equal to four
percent of the total number of shares of our common stock outstanding on the
last trading day of December in the prior calendar year, but in no event will
this annual increase exceed 5,000,000 shares and in no event will the total
number of shares of Class A common stock in the share reserve (as adjusted for
all such annual increases) exceed 100,000,000 shares. In addition, no
participant in the 2000 plan may be granted stock options, direct stock
issuances or share right awards for more than 3,000,000 shares of Class A
common stock in total in any calendar year.

   Programs. Our 2000 plan has five separate programs:

  . the discretionary option grant program, under which the compensation
    committee may grant (1) non-statutory options to purchase shares of our
    Class A common stock to eligible individuals in our employ or service
    (including employees, non-employee board members and consultants) at an
    exercise price not less than 85% of the fair market value of those shares
    on the grant date and (2) incentive stock options to purchase shares of
    Class A common stock to eligible employees at an exercise price not less
    than 100% of the fair market value of those shares on the grant date;

  . the stock issuance program, under which eligible individuals may be
    issued shares of Class A common stock directly, upon the attainment of
    performance milestones or the completion of a specified period of service
    or as a bonus for past services;

  . the salary investment option grant program, under which our executive
    officers and other highly compensated employees may be given the
    opportunity to apply a portion of their base salary each year to the
    acquisition of special below-market stock option grants;

  . the automatic option grant program, under which option grants will
    automatically be made at periodic intervals to eligible non-employee
    board members to purchase shares of Class A common stock at an exercise
    price equal to 100% of the fair market value of those shares on the grant
    date; and

  . the director fee option grant program, under which our non-employee board
    members may be given the opportunity to apply a portion of any retainer
    fee otherwise payable to them in cash each year to the acquisition of
    special below-market option grants.

   Eligibility. The individuals eligible to participate in our 2000 plan
include our officers and other employees, our board members and any consultants
we hire.

   Administration. Our compensation committee will administer the discretionary
option grant and stock issuance programs. This committee will determine which
eligible individuals are to receive option grants or stock issuances under
those programs, the time or times when the grants or issuances are to be made,
the number of shares subject to each grant or issuance, the status of any
granted option as either an incentive stock option or a non-statutory stock
option under the federal tax laws, the vesting schedule to be in effect for the
option grant or stock issuance and the maximum term for which any granted
option is to remain outstanding. The compensation committee will also have the
authority to select the executive officers and other highly

                                       52


compensated employees who may participate in the salary investment option grant
program in the event that program is put into effect for one or more calendar
years.

   Discretionary Option Grant Program. Under this program, our employees, third
party service providers and non-employee board members may be granted statutory
stock options or non-statutory stock options.

   Program Features. Our discretionary option grant program will include the
following features:

  . The exercise price for any options granted under the 2000 plan may be
    paid in cash or in shares of our Class A common stock valued at fair
    market value on the exercise date. The option may also be exercised
    through a same-day sale program without any cash outlay by the optionee.

  . The compensation committee will have the authority to cancel outstanding
    options under the discretionary option grant program, including any
    transferred options from our 1998 plan and 1999 plan, in return for the
    grant of new options for the same or different number of option shares
    with an exercise price per share based upon the fair market value of our
    Class A common stock on the new grant date.

  . Stock appreciation rights may be issued under the discretionary option
    grant program. These rights will provide the holders with the election to
    surrender their outstanding options for a payment from us equal to the
    fair market value of the shares subject to the surrendered options less
    the exercise price payable for those shares. We may make the payment in
    cash or in shares of our Class A common stock.

   Change in Control. Our discretionary option grant program will include the
following change in control provisions which may result in the accelerated
vesting of outstanding option grants and stock issuances:

  . In the event that we are acquired by merger or asset sale, each
    outstanding option under the discretionary option grant program that is
    not to be assumed, or otherwise compensated for, by the successor
    corporation will immediately become exercisable for all the option
    shares, and all outstanding unvested shares will immediately vest. Except
    to the extent as limited by the plan administrator, our repurchase rights
    with respect to those shares are to be assigned to the successor
    corporation.

  . The compensation committee will have complete discretion to grant one or
    more options that will become exercisable for all the option shares in
    the event those options are assumed in the acquisition but the optionee's
    service with us or the acquiring entity is subsequently terminated. The
    vesting of any outstanding shares under the stock issuance program may be
    accelerated upon similar terms and conditions.

  . The compensation committee may grant options and structure repurchase
    rights so that the shares subject to those options or repurchase rights
    will immediately vest in connection with a successful tender offer for
    more than fifty percent of our outstanding voting stock or a change in
    the majority of our board through one or more contested elections. This
    accelerated vesting may occur either at the time of the transaction or
    upon the subsequent termination of the individual's service.

   Stock Issuance Program. Eligible individuals may be issued shares of Class A
common stock through direct issuances in amounts to be determined by the
compensation committee. Shares of Class A common stock may also be issued
pursuant to awards that entitle the recipients to receive shares upon the
attainment of designated performance goals. Under this program, the purchase
price for the shares shall not be less than 100% of the fair market value of
the shares on the date of issuance, and payment may be in the form of cash or
past services rendered. In the event of a change of control, our repurchase
rights for unvested shares under this program will terminate and all shares of
stock subject to those rights shall immediately vest in full, unless assigned
to the successor corporation or as limited by the plan administrator.

   Salary Investment Option Grant Program. In the event the compensation
committee decides to put this program into effect for one or more calendar
years, each of our executive officers and other highly compensated employees
may elect to reduce his or her base salary for the calendar year by an amount
not less than $10,000 nor more than $50,000. Each selected individual who makes
this election will automatically be

                                       53


granted, on the first trading day in January of the calendar year for which his
or her salary reduction is to be in effect, an option to purchase that number
of shares of Class A common stock determined by dividing the salary reduction
amount by two-thirds of the fair market value per share of our Class A common
stock on the grant date. The option will have an exercise price per share equal
to one-third of the fair market value of the option shares on the grant date.
As a result, the option will be structured so that the fair market value of the
option shares on the grant date less the aggregate exercise price payable for
those shares will be equal to the amount of the salary reduction. The option
will become exercisable in a series of twelve equal monthly installments over
the calendar year for which the salary reduction is to be in effect. In the
event of a change of control while the optionee remains in our service, each
outstanding option under this program will automatically accelerate so that
each option shall vest and become exercisable immediately prior to the change
of control.

   The amount of the base salary reduction for a particular year which the
optionee elects to apply to the acquisition of an option under the Salary
Investment Option Grant Program will be taxable to the optionee as ordinary
income in that year, as if the optionee had received the same amount as cash
compensation. The optionee will be required to satisfy all income and
employment tax withholding requirements applicable to such income. Each option
will be a non-statutory option under the U.S. federal income tax laws. The
optionee will obtain an income tax basis in the option in an amount equal to
the corresponding reduction in the optionee's base salary. The optionee will,
in general, recognize ordinary income in the year in which the option is
exercised in an amount equal to the excess of (i) the fair market value of the
purchased shares on the date of exercise over (ii) the sum of the exercise
price paid per share and the amount of the optionee's salary reduction
allocable to the purchased shares. The preceding discussion is intended to be
only a general description of the tax consequences of the options under the
provisions of U.S. federal income tax law currently in effect and does not
address any state, local or non-U.S. tax laws.

   Automatic Option Grant Program. Each individual who first becomes a non-
employee board member at any time after the effective date of this offering
will receive an option grant to purchase 50,000 shares of Class A common stock
on the date the individual joins the board. In addition, on the date of each
annual shareholders meeting held after the effective date of this offering,
each non-employee board member who is to continue to serve as a non-employee
board member, including each of our current non-employee board members, will
automatically be granted an option to purchase 10,000 shares of Class A common
stock, provided that the individual has served on the board for at least six
months.

   Each automatic grant will have an exercise price per share equal to the fair
market value per share of our Class A common stock on the grant date and will
have a term of 10 years, subject to earlier termination following the
optionee's cessation of board service. The option will be immediately
exercisable for all of the option shares; however, we may repurchase, at the
exercise price paid per share, any shares purchased under the option which are
not vested at the time of the optionee's cessation of board service. The shares
subject to each initial 50,000 share automatic option grant will vest at a rate
of 25% per year for each year of continuous board service following the option
grant date. However, the shares will immediately vest in full upon certain
changes in control or ownership or upon the optionee's death or disability
while a board member. The shares subject to each annual 10,000 share automatic
grant will vest in full after one year of board service following the option
grant date.

   In the event a of change in control while the optionee remains on our board,
each outstanding option under this program will automatically accelerate so
that each option shall vest and become exercisable immediately prior to the
change of control.

   Director Fee Option Grant Program. If this program is put into effect in the
future, then each non-employee board member may elect to apply all or a portion
of any cash retainer fee for the year to the acquisition of a below-market
option grant. The option grant will automatically be made on the first trading
day in January in the year for which the non-employee board member would
otherwise be paid the cash retainer fee in the absence of his or her election.
The option will have an exercise price per share equal to one-third of the fair
market value of the option shares on the grant date, and the number of shares
subject to the option will be

                                       54


determined by dividing the amount of the retainer fee applied to the program by
two-thirds of the fair market value per share of our Class A common stock on
the grant date. As a result, the option will be structured so that the fair
market value of the option shares on the grant date less the aggregate exercise
price payable for those shares will be equal to the portion of the retainer fee
applied to that option. The option will become exercisable in a series of
twelve equal monthly installments over the calendar year for which the election
is in effect. However, the option will become immediately exercisable for all
the option shares upon the death or disability of the optionee while serving as
a board member. In the event of a change of control while the optionee remains
on our board, each outstanding option under this program will automatically
accelerate so that each option shall vest and become exercisable immediately
prior to the change of control.

   Additional Program Features. Our 2000 plan will also have the following
features:

  . Limited stock appreciation rights will automatically be included as part
    of each grant made under the salary investment option grant program and
    the automatic and director fee option grant programs, and these rights
    may also be granted to one or more officers as part of their option
    grants under the discretionary option grant program. Options with this
    feature may be surrendered to us upon the successful completion of a
    hostile tender offer for more than 50% of our outstanding voting stock or
    a change in the majority of our board through one or more contested
    elections. In return for the surrendered option, the optionee will be
    entitled to a cash payment from us in an amount per surrendered option
    share based upon the highest price per share of our Class A common stock
    paid in a tender offer, or the fair market value per share of our Class A
    common stock on the effective date of a change in the majority of our
    board.

  . The board may amend or modify the 2000 plan at any time, subject to any
    required shareholder approval. The 2000 plan will terminate no later than
    the tenth anniversary of the completion of this offering.

 2000 Employee Stock Purchase Plan

   Introduction. Our 2000 Employee Stock Purchase Plan was adopted by our board
of directors in September 2000 and amended in February 2001 and May 2001. Our
shareholders approved the plan in June 2001. This plan will become effective
upon the completion of this offering. The plan is designed to allow our
eligible employees and the eligible employees of our participating subsidiaries
to purchase shares of our Class A common stock, at semi-annual intervals, with
their accumulated payroll deductions.

   Share Reserve. We have initially reserved 2,071,652 shares of our Class A
common stock for issuance under this purchase plan. The reserve will
automatically increase on the first trading day in January each calendar year,
beginning in calendar year 2002, by an amount equal to one percent of the total
number of outstanding shares of our common stock on the last trading day in
December in the prior calendar year. In no event will any annual increase
exceed 1,000,000 shares and in no event will the total number of shares of
Class A common stock reserved for issuance under the plan (as adjusted for all
such annual increases) exceed 11,500,000 shares.

   Administration. Our compensation committee will administer the purchase
plan. The compensation committee shall have full authority to interpret and
construe any provisions of the purchase plan and adopt such rules and
regulations for administering the purchase plan as it may deem necessary in
order to comply with the requirements of Section 423 of the Internal Revenue
Code.

   Offering Periods. The purchase plan will have a series of successive
offering periods, each with a maximum duration of 24 months. The initial
offering period will start upon completion of this offering and will end on the
last business day in December 2002. The next offering period will start on the
first business day in January 2003, and subsequent offering periods will set by
our compensation committee.

                                       55


   Eligible Employees. Individuals scheduled to work more than 20 hours per
week for more than five calendar months per year may join an offering period on
the start date of the offering period or any semi-annual entry date within that
period. Semi-annual entry dates will occur on the first business day of January
and July each year. Individuals who become eligible employees after the start
date of an offering period may join the plan on any subsequent semi-annual
entry date within that offering period.

   Payroll Deductions. A participant may contribute up from 1% to 15% of the
participant's cash earnings through payroll deductions, and the accumulated
deductions will be applied to the purchase of shares on each semi-annual
purchase date. The purchase price per share will be equal to 85% of the fair
market value per share of Class A common stock on the participant's entry date
into the offering period or, if lower, 85% of the fair market value per share
on the semi-annual purchase date. Semi-annual purchase dates will occur on the
last business day of June and December each year. However, a participant may
not purchase more than 5,000 shares on any purchase date, and not more than
500,000 shares may be purchased in total by all participants on any purchase
date. Our compensation committee will have the authority to change these
limitations for any subsequent offering period.

   Reset Feature. If the fair market value per share of our Class A common
stock on any purchase date is less than the fair market value per share on the
start date of the then current two-year offering period, then that offering
period will automatically terminate, and a new two-year offering period will
begin on the next business day. All participants in the terminated offering
will be transferred to the new offering period.

   Change in control. Should we be acquired by merger or sale of substantially
all of our assets or more than fifty percent of our voting securities, then all
outstanding purchase rights will automatically be exercised immediately prior
to the effective date of the acquisition. The purchase price will be equal to
the lesser of 85% of the market value per share of Class A common stock on the
participant's entry date into the offering period in which an acquisition
occurs or 85% of the fair market value per share immediately prior to the
acquisition.

   Plan Provisions. The following provisions will also be in effect under the
plan:

  . The plan will terminate no later than the tenth anniversary of the
    completion of this offering.

  . The board may at any time amend, suspend or discontinue the plan.
    However, some amendments may require stockholder approval.

 401(k) Plan

   Effective September 1, 1998, we established a 401(k) defined contribution
plan, in which all of our U.S. employees may participate. Plan participants
contribute up to 15% of their eligible compensation to the plan, subject to the
statutorily prescribed annual limit, which is $10,500 for 2000. We intend the
plan to qualify under Section 401(k) of the Internal Revenue Code so that
contributions by employees to the plan, and income earned, if any, on plan
contributions, are not taxable to employees until withdrawn from the plan. From
the plan's inception through March 31, 2000, we made matching contributions on
behalf of the plan participants at the rate of 25% of participant contributions
up to 6% of compensation. The plan was updated on April 1, 2000 for a change in
the matching contribution rate to 50% of participant contributions up to 6% of
compensation. During 1998, 1999 and 2000, we made matching contributions of
$4,306, $21,632 and $167,214, respectively.

Employment Agreements and Change in Control Arrangements

   None of our executive officers has employment agreements with us.
Accordingly, the employment of any such executive officer may be terminated at
any time at the discretion of the board of directors.

                                       56


Director and Officer Indemnification and Liability

   Our articles of incorporation limit the personal liability of our directors
for monetary damages to the fullest extent permitted by California law.
California law provides that directors of a company will not be personally
liable for monetary damages for breach of their fiduciary duties as a director,
except liability associated with any of the following:

  . acts or omissions that involve intentional misconduct or a knowing and
    culpable violation of law;

  . acts or omissions that a director believes to be contrary to the best
    interests of the company or its shareholders or that involve the absence
    of good faith on the part of the director, for any transaction from which
    a director derived an improper personal benefit;

  . acts or omissions that show a reckless disregard for the director's duty
    to the company or its shareholders in circumstances in which the director
    was aware, or should have been aware, in the ordinary course of
    performing a director's duties, of a risk of a serious injury to the
    company or its shareholders;

  . acts or omissions that constitute an unexcused pattern of inattention
    that amounts to an abdication of the director's duty to the company or
    its shareholders;

  . contacts or transactions between the company and a director; and

  . directors' liability for improper dividends, loans and guarantees.

   The limitation of directors' liability does not affect liabilities arising
under federal securities law and does not affect the availability of
injunctions and other equitable remedies.

   Our articles of incorporation and bylaws also include an authorization for
us to indemnify our directors, officers, employees and other agents, by
agreement or otherwise, to the fullest extent permitted by law. In addition, we
may, at our discretion, provide indemnification to persons whom we are not
obligated to indemnify. We believe that indemnification under our bylaws covers
at least negligence and gross negligence on the part of the indemnified
parties. Our bylaws also allow us to enter into indemnity agreements with
individual directors, officers, employees and other agents.

   We have entered into indemnification agreements with each of our officers
and directors containing provisions that require us to, among other things,
indemnify those officers and directors against liabilities that may arise by
reason of their status or service as directors or officers, other than
liabilities arising from willful misconduct of a culpable nature, to advance
their expenses incurred as a result of any proceeding against them as to which
they could be indemnified, and to cover our directors and officers under any of
our liability insurance policies applicable to directors and officers. We
believe that these provisions and agreements are necessary to attract and
retain qualified persons as directors and executive officers.

                                       57


                              CERTAIN TRANSACTIONS

Sales of Stock

   We have issued and sold shares of our capital stock in private placement
transactions as follows:

  . 1,670,000 shares of Series A preferred stock at a price of $9.00 per
    share in June 1999 (each of which converts into ten shares of our Class A
    common stock, effectively reducing the purchase price to $0.90 per
    share);

  . 41,640 shares of Series A preferred stock at a price of $9.00 per share
    in September 1999 (each of which converts into ten shares of our Class A
    common stock, effectively reducing the purchase price to $0.90 per
    share); and

  . 1,000,000 shares of Series B preferred stock at a price of $40.00 per
    share in March through May 2000 (each of which converts into ten shares
    of our Class A common stock, effectively reducing the purchase price to
    $4.00 per share).

   All shares of preferred stock will convert into Class A common stock on a
10-for-1 basis upon the closing of this offering. All holders of preferred
stock have entered into the lock-up agreements described in "Underwriting."

   In connection with the sale of Series B preferred stock, in May 2000 we
issued to holders of our Series A preferred stock warrants to purchase up to
250,000 shares of Series B preferred stock at an exercise price of $40.00 per
share. To the extent outstanding, these warrants will convert on a 10-for-1
basis into warrants to purchase 2,500,000 shares of our Class A common stock at
an exercise price of $4.00 per share upon the closing of this offering. To
date, no shares of our preferred stock have been converted into shares of our
Class A common stock.

   The following table summarizes, on an as-converted basis to Class A common
stock, the shares of capital stock purchased by and warrants issued to
beneficial owners holders of more than 5% of our outstanding Class A common
stock in these private placement transactions, although this table does not
necessarily reflect outstanding amounts:



                                                                    Warrants to
                                                                     Purchase
                                                Series A  Series B   Series B
                                               Preferred  Preferred  Preferred
               Name of Purchaser                 Stock      Stock      Stock
               -----------------               ---------- --------- -----------
                                                           
   TRW, Inc..................................         --  1,250,000        --
   Entities affiliated with Brentwood Venture
    Capital..................................  16,700,000       --   2,439,200
   Entities affiliated with Redpoint
    Ventures.................................         --  2,000,000        --
   Entities affiliated with Meritech Capital
    Partners ................................         --  3,750,000        --
   International Business Machines
    Corporation..............................         --  2,500,000  2,500,000


Affiliated Relationships

   Messrs. Jones and Walecka, who are members of our board of directors, are
partners in entities affiliated with Brentwood Venture Capital and are founding
partners of entities affiliated with Redpoint Ventures. Additionally, Brentwood
Venture Capital and Redpoint Ventures are investors in Meritech Capital
Partners.

Other Matters

 TRW

   In June 1997, we entered into a supply agreement with TRW pursuant to which
TRW supplies us with a certain number of processed GaAs wafers annually for a
fixed price per wafer. The agreement was amended in June 1999 to revise the
wafer delivery requirement. In October 2000, we entered into a short-term
foundry agreement with TRW to purchase InP development wafers for a fixed price
per wafer. This agreement was

                                       58


amended in November 2000 and December 2000 to revise the number of development
wafers to be purchased. We also have a development agreement with TRW for GaAs
development materials which was entered into in June 1995 and which has been
amended several times primarily to extend the term of the agreement and revise
hourly time and material labor rates.

   In June 1997, we executed a revolving promissory note in favor of TRW,
pursuant to which TRW loaned us the principal sum of $1,500,000 at an annual
interest rate of 6%. This note was due in full in October 2002; however, it was
paid in full in May 2000.

 IBM

   During May 2000, we entered into a series of agreements with IBM. Our
semiconductor development agreement with IBM provides us with certain models
and design kits for use in the fabrication process to develop new integrated
circuits. Under our joint development agreement with IBM, pursuant to which we
licensed to IBM and IBM licensed to us, certain technology, we jointly develop
integrated circuits. We are both permitted to sell the jointly created products
to third parties, subject to a fixed royalty fee payable to the other party.

 ASIP

   In July 2000, we entered into a stock purchase and option agreement with
ASIP, an optical components company, pursuant to which we purchased 1,666,667
shares of ASIP's Series A preferred stock at an aggregate purchase price of
$833,334. We were also granted an option to purchase, and we granted ASIP an
option to require us to purchase upon the attainment of certain performance
goals, 833,333 shares of ASIP's Series B preferred stock at an aggregate
purchase price of $1,666,666. In January 2001, we exercised our option and
purchased 833,333 shares of Series B preferred stock. The other investors in
the transaction were Redpoint Ventures and certain of its affiliates.

   In May 2001, we entered into a development and license agreement with ASIP,
pursuant to which ASIP will design, develop and prototype certain optical
components, and we will reimburse ASIP a maximum of $2,500,000 of its
development expenses and consign up to $3,500,000 of equipment to ASIP, which
ASIP will later have the option to purchase at its then-depreciated value. The
agreement also provides that we will enter a supply agreement with ASIP upon
ASIP's successful completion and delivery of the component prototypes.

   Dr. Stephen Forrest, one of our directors, is a founder and director of
ASIP. Additionally, Dr. Richard Nottenburg, our Co-Chairman of the Board,
President and Chief Executive Officer, and G. Bradford Jones and John Walecka,
two of our directors, are each directors of ASIP. Additionally, Messrs. Jones
and Walecka are founding partners of entities affiliated with Redpoint
Ventures.

 Internet Machines

   In October 2000, we entered into a stock purchase agreement with Internet
Machines, an optical components company focusing on network processing and
switch fabric devices. A switch fabric device is a switching element that
provides network equipment vendors with a fundamental building block for
creating switching platforms needed to support high-speed throughput and high
density systems required for optical networks. We purchased 320,671 shares of
Internet Machines Series B preferred stock at an aggregate purchase price of
$1,555,254. The purpose of the transaction was to make an investment in an
emerging company with promising intellectual property. The transaction was
based on arms'-length negotiations between Internet Machines and the lead
investor in the Series B preferred stock financing round. We received the same
rights, privileges and preferences as the lead investor and other minority
investors.

   The other investors in the transaction included Redpoint Ventures and
Meritech Capital Partners and certain of their respective affiliates. Dr.
Richard Nottenburg, our Co-Chairman of the Board, President and Chief Executive
Officer, and John Walecka, one of our directors, are each directors of Internet
Machines. Additionally, Mr. Walecka and G. Bradford Jones are founding partners
of entities affiliated with Redpoint Ventures, and Redpoint Ventures is an
investor in Meritech Capital Partners.

                                       59


                             PRINCIPAL SHAREHOLDERS

   The following table, which assumes the conversion of our outstanding
preferred stock into our Class A common stock, sets forth certain information
regarding the beneficial ownership of our shares of Class A common stock and
Class B common stock as of June 19, 2001, and as adjusted to reflect the sale
of the Class A common stock offered hereby, by the following:

  . each shareholder known by us to own beneficially more than 5% of our
    outstanding shares of Class A common stock or Class B common stock;

  . each of our executive officers named in the compensation table above;

  . each of our directors; and

  . all current executive officers and directors as a group.

   As of June 19, 2001, there were 29,319,483 shares of Class A common stock
and 28,000,000 shares of Class B common stock outstanding, assuming that all
outstanding preferred shares have been converted into shares of Class A common
stock. Beneficial ownership is determined in accordance with the rules of the
Securities and Exchange Commission. For purposes of calculating the number of
shares beneficially owned by a shareholder and the percentage ownership of that
shareholder, shares of common stock subject to options or warrants held by that
person that are currently exercisable or exercisable within 60 days of June 19,
2001 are deemed outstanding for purpose of computing percentage ownership. The
numbers shown in the table below assume no exercise of the underwriters' over-
allotment option. Unless otherwise noted, we believe that each of the
shareholders has sole investment and voting power with respect to the common
stock indicated, except to the extent shared by spouses under applicable law.

   Unless otherwise listed, the address for each shareholder listed in the
table below is c/o Multilink Technology Corporation, 300 Atrium Drive, 2nd
Floor, Somerset, New Jersey 08873.



                                  Shares Beneficially  Percentage of Total
                                         Owned            Voting Power
                                 --------------------- ----------------------
Name or Group of Beneficial       Class A     Class B   Before        After
Owners                             Shares    Shares(1) Offering     Offering
- ---------------------------      ---------- ---------- ---------    ---------
                                                        
Directors And Executive
 Officers
Richard N. Nottenburg(2).......   2,375,000 15,820,000      33.36%       47.90%
Jens Albers(3).................   2,050,000  8,480,000         *            *
Eric M. Pillmore(4)............     361,111        --          *            *
Ronald M. Krisanda(5)..........      50,000        --          *            *
Craig S. Lewis.................     200,000        --          *            *
G. Bradford Jones(6)...........  23,139,200        --       36.04         6.90
John Walecka(7)................  23,139,200        --       36.04         6.90
Stephen R. Forrest(8)..........      50,000        --          *            *
Edward J. Zander(9)............      68,750        --          *            *
All directors and executive
 officers as a group
 (9 persons)...................  28,294,061 15,820,000      69.98        55.63
5% Shareholders
Entities associated with
 Brentwood Venture
 Capital(10)...................  21,139,200        --       35.62         6.31
Matthias Bussmann..............         --   6,480,000      13.46        19.33
International Business Machines
 Corporation(11)...............   5,000,000        --        1.04         1.49
TRW, Inc.......................   1,250,000  5,700,000      12.10        17.37
Entities associated with
 Meritech Capital
 Partners(12)..................   3,750,000        --          *          1.12

- ---------------------
 * Less than 1%

(1) Holders of Class B common stock are entitled to ten votes per share. Each
    share of Class B common stock is convertible at the option of the holder
    into one share of Class A common stock and will, in general,

                                       60


     automatically convert into one share of Class A common stock upon sale or
     other transfer to any person or entity other than a person or entity that
     owns or controls an entity that owns Class B common stock.

 (2) Includes 2,375,000 shares subject to an option exercisable within 60 days
     of June 19, 2001. Also includes 8,480,000 shares of Class B common stock
     owned by Dr. Albers over which Dr. Nottenburg has sole voting power
     pursuant to a voting trust agreement between Dr. Nottenburg and Dr.
     Albers. Dr. Nottenburg disclaims beneficial interest in such shares.

 (3) Includes 2,050,000 shares subject to an option exercisable within 60 days
     of June 19, 2001. Dr. Nottenburg has sole voting power over Dr. Albers'
     shares of Class B common stock pursuant to a voting trust agreement
     between Dr. Nottenburg and Dr. Albers. Dr. Nottenburg disclaims beneficial
     interest in such shares.

 (4) Consists of 361,111 shares subject to an option exercisable within 60 days
     of June 19, 2001.

 (5) Consists of 50,000 shares subject to an option exercisable within 60 days
     of June 19, 2001.

 (6) Mr. Jones is a general partner of entities affiliated with Brentwood
     Venture Capital and entities affiliated with Redpoint Ventures. The shares
     listed include (i) 18,700,000 shares held by entities affiliated with
     Brentwood Venture Capital, (ii) 2,439,200 shares issuable to entities
     affiliated with Brentwood Venture Capital pursuant to currently
     exercisable warrants, and (iii) 2,000,000 shares held by entities
     affiliated with Redpoint Ventures. Mr. Jones disclaims beneficial interest
     in the shares held by these entities, except to the extent of his
     pecuniary interest in these entities. Shares of preferred stock held by
     entities affiliated with Brentwood Venture Capital possess voting rights
     entitling the holder to ten votes per share of common stock into which the
     preferred stock is convertible. Upon the conversion of such shares into
     Class A common stock upon the closing of this offering, each share so
     converted will entitle the holder to one vote per share.

 (7) Mr. Walecka is a general partner of entities affiliated with Brentwood
     Venture Capital and entities affiliated with Redpoint Ventures. The shares
     listed include (i) 18,700,000 shares held by entities affiliated with
     Brentwood Venture Capital, (ii) 2,439,200 shares issuable to entities
     affiliated with Brentwood Venture Capital pursuant to currently
     exercisable warrants, and (iii) 2,000,000 shares held by entities
     affiliated with Redpoint Ventures. Mr. Walecka disclaims beneficial
     interest in the shares held by these entities, except to the extent of his
     pecuniary interest in these entities. Shares of preferred stock held by
     entities affiliated with Brentwood Venture Capital possess voting rights
     entitling the holder to ten votes per share of common stock into which the
     preferred stock is convertible. Upon the conversion of such shares into
     Class A common stock upon the closing of this offering, each share so
     converted will entitle the holder to one vote per share.

 (8) Consists of 50,000 shares subject to an option exercisable within 60 days
     of June 19, 2001.

 (9) The shares listed include (i) 58,333 shares held by Mr. Zander and (ii)
     10,417 shares subject to an option exercisable within 60 days of June 19,
     2001.

(10) Includes 20,505,000 shares held by or issuable to Brentwood Associates IX,
     L.P. and 634,200 shares held by or issuable to Brentwood Affiliates Fund
     III.

(11) Includes 2,500,000 shares subject to a currently exercisable warrant.

(12) Consists of 3,690,000 shares held by Meritech Capital Partners L.P. and
     60,000 shares held by Meritech Capital Affiliates.

                                       61


                          DESCRIPTION OF CAPITAL STOCK

   Our articles of incorporation authorize the issuance of up to 310,000,000
shares of capital stock, of which 200,000,000 shares are Class A common stock,
100,000,000 shares are Class B common stock, and 10,000,000 shares are
preferred stock. From time to time, our board may establish the rights and
preferences of the preferred stock. The following summary of our capital stock
is, by necessity, not complete. We encourage you to refer to our articles of
incorporation and bylaws, which are included as exhibits to the registration
statement of which this prospectus is a part, and to applicable provisions of
California law for a more complete description.

Common Stock

   We are authorized to issue up to 300,000,000 shares of common stock, $0.0001
par value, of which 200,000,000 shares have been designated as Class A common
stock and 100,000,000 shares have been designated as Class B common stock. At
June 19, 2001, 2,203,083 shares of Class A common stock were issued and
outstanding and held by nine shareholders, and 28,000,000 shares of Class B
common stock were issued and outstanding and held by four shareholders. After
giving effect to this offering and the automatic conversion of our outstanding
shares of preferred stock into shares of Class A common stock, there will be
37,319,483 shares of Class A common stock issued and outstanding and 28,000,000
shares of Class B common stock issued and outstanding.

   The shares of our Class B common stock are substantially identical to the
shares of our Class A common stock, except that the holders of Class A common
stock are entitled to one vote per share and the holders of the Class B common
stock are entitled to ten votes per share on all matters submitted to
shareholder vote. Holders of shares of Class A common stock and holders of
shares of Class B common stock vote together as a single class on all matters
submitted to a shareholder vote, except (1) as otherwise required by law or (2)
with respect to a proposed issuance of additional shares of Class B common
stock, which issuance requires the affirmative vote of the holders of a
majority of the outstanding shares of Class B common stock, voting separately
as a class. Each share of Class B common stock is convertible at the option of
the holder into one share of Class A common stock and will, in general,
automatically convert into one share of Class A common stock upon sale or other
transfer to any person or entity other than a person or entity that owns or
controls an entity that owns Class B common stock.

   Under our bylaws, holders of common stock will not have cumulative voting
rights after we are a "listed corporation" under California law. In such event,
the holders of the remaining shares will not be able to elect any directors. We
anticipate we will qualify as a listed corporation as of the closing of this
offering.

Preferred Stock

   Our articles of incorporation provide that our board of directors has the
authority, without the action of our shareholders, to designate and issue
preferred stock in one or more series and to designate the rights, preferences
and privileges of each such series. The rights, preferences and privileges of
each series of preferred stock may be greater than the rights of our common
stock. It is not possible to state the actual effect of the issuance of any
shares of preferred stock upon the rights of holders of our common stock until
the board of directors determines the specific rights of the holders of any
preferred stock that may be issued. However, the effects might include, among
other things: (1) restricting dividends on common stock; (2) diluting the
voting power of the common stock; (3) impairing the liquidation rights of the
common stock; and (4) delaying or preventing a change in our control without
further action by the shareholders. Upon the completion of this offering, no
shares of preferred stock will be outstanding, and we have no present plans to
issue any shares of preferred stock.

Transfer Agent and Registrar

   The transfer agent and registrar for our Class A common stock is American
Stock Transfer & Trust Company. The transfer agent's address is 59 Maiden Lane,
New York, NY, 10038, and its telephone number is (212) 936-5100.

Nasdaq Stock Market National Market Listing

   We have been approved to list our Class A common stock on The Nasdaq
National Market under the symbol "MLTC."

                                       62


                        SHARES ELIGIBLE FOR FUTURE SALE

   Before this offering, there has not been any public market for shares of our
Class A common stock, and we cannot predict the effect, if any, that market
sales of shares of our common stock by our existing shareholders or the
availability of shares of our common stock for sale will have on the market
price of shares of our Class A common stock. Nevertheless, sales of substantial
amounts of shares of our common stock by our existing shareholders in the
public market, or the perception that such sales could occur, could adversely
affect the market price of shares of our Class A common stock and could impair
our future ability to raise capital through the sale of equity securities.

   Upon completion of this offering, we will have a total of 65,319,483 shares
of common stock outstanding, assuming no exercise of outstanding options or
warrants. Shares sold in this offering will be freely tradeable, except that
any shares held by our "affiliates," as that term is defined in Rule 144
promulgated under the Securities Act of 1933, may only be sold in compliance
with the limitations described below. The remaining 57,319,483 shares
outstanding of common stock will be deemed "restricted securities" as defined
under Rule 144. Restricted securities may be sold in the public market only if
registered or if they qualify for an exemption from registration under Rules
144, 144(k) or 701 promulgated under the Securities Act, summarized below.

Lock-Up Agreements

   Our officers and directors and all of our shareholders have agreed that they
will not offer, sell, contract to sell, pledge or otherwise dispose of,
directly or indirectly, any shares of our common stock or securities
convertible into or exchangeable or exercisable for any shares of our common
stock, enter into a transaction which would have the same effect, or enter into
any swap, hedge or other arrangement that transfers, in whole or in part, any
of the economic consequences of ownership of our common stock, whether any such
aforementioned transaction is to be settled by delivery of our common stock or
such other securities, in cash or otherwise, or publicly disclose the intention
to make any such offer, sale, pledge or disposition, or to enter into any such
transaction, swap, hedge or other arrangement without, in each case, the prior
written consent of Credit Suisse First Boston Corporation for a period of 180
days after the date of this prospectus. If the reported last sale price of our
common stock on The Nasdaq National Market is at least twice the public
offering price per share shown on the cover page of this prospectus for 20 of
the 30 trading days ending on the last trading day preceding the 90th day after
the date of this prospectus, then 15% of the shares of our outstanding common
stock, or 9,797,922 shares, will be released from these restrictions. The
release of these shares will occur on the later of:

  . the 91st day after this offering; or

  . the second trading day following the public release of our financial
    results for the quarter immediately after this offering.

   As of the date of this prospectus, options to purchase 5,600,200 shares of
our Class A common stock will not be subject to the lock-up period. Of these,
options to purchase 349,250 shares are vested. The holders of all of these
options are foreign employees.

                                       63


Rule 144

   In general, under Rule 144 as currently in effect, beginning 90 days after
the date of this prospectus, a person who has beneficially owned restricted
shares for at least one year would be entitled to sell in any three-month
period up to the greater of:

  . 1% of the then-outstanding shares of Class A common stock, or
    approximately 373,195 shares immediately after this offering; or

  . the average weekly trading volume of the common shares during the four
    calendar weeks preceding the filing of a Form 144 with respect to such
    sale.

   Sales under Rule 144 are also subject to certain manner of sale and notice
requirements and to the availability of current public information about us.

   Under Rule 144(k), a person who has not been one of our affiliates during
the preceding 90 days and who has beneficially owned the restricted shares for
at least two years is entitled to sell them without complying with the manner
of sale, public information, volume limitation or notice provisions of Rule
144. As of the date of this prospectus, no shares of our Class A common stock
are eligible for sale under Rule 144(k).

Rule 701

   Any of our employees, directors, officers, consultants or advisors who
purchased shares from us in connection with a written stock or option plan
before the effective date of this offering is entitled to rely on the resale
provisions of Rule 701, subject to the lock-up agreements described above. In
general, Rule 701 permits non-affiliates to sell their Rule 701 shares 90 days
after the effectiveness of a registration statement relating to a company's
initial public offering without having to comply with the public information,
holding period, volume limitation or notice provisions of Rule 144 and permits
affiliates to sell their Rule 701 shares without having to comply with the
holding period of Rule 144. As of the date of this prospectus, no shares of our
Class A common stock, which are not subject to the lock-up period, are eligible
for sale under Rule 701.

Stock Options and Warrants

   As of June 19, 2001, options to purchase a total of 42,046,117 shares of
Class A common stock under our existing stock plans were outstanding. Warrants
to purchase 5,813,716 shares of Class A common stock or shares convertible, on
a one-for-one basis, into Class A common stock were also outstanding as of June
19, 2001. An additional 2,750,800 shares of Class A common stock were available
for future option grants under our existing stock plans. An additional
4,286,606 shares of Class A common stock will become available for future
option grants under our proposed 2000 incentive plan, and 2,071,652 shares of
Class A common stock will become available for future purchase under our
proposed 2000 employee stock purchase plan, each of which will become effective
upon the effectiveness of this offering.

   We intend to file a registration statement on Form S-8 to register shares of
Class A common stock issued or reserved for issuance under our existing stock
plans, our proposed 2000 stock incentive plan and our proposed employee stock
purchase plan within 180 days after the date of this prospectus, thus
permitting the resale of such shares by nonaffiliates in the public market
without restriction under the Securities Act, subject to the lock-up agreements
described in "Underwriting."

                                       64


Registration Rights

   Pursuant to an investors' rights agreement we entered into with holders of
our preferred stock, the holders of 32,116,400 shares of Class A common stock,
assuming conversion of all outstanding shares of preferred stock and the
exercise of all warrants to purchase preferred stock (which convert into
warrants to purchase Class A common stock upon the effectiveness of this
offering), are entitled to registration rights regarding those shares. Under
the terms of the agreement, if, at any time after six months following the
initial public offering, we propose to register any of our securities under the
Securities Act, either for our own account or for the account of other security
holders exercising registration rights, the holders of these shares are
entitled to notice of the registration and to include their common stock in the
registration at our expense. This right is subject to conditions and
limitations, including the right of the underwriters in an offering to limit
the number of shares included in the registration. The holders of these shares
may also require us to file up to two registration statements under the
Securities Act at our expense with respect to their common stock. We are
required to use best efforts to effect these registrations, subject to
conditions and limitations. Furthermore, the holders of these registration
rights may require us to file additional registration statements on Form S-3,
subject to conditions and limitations. These rights terminate on the earlier of
five years after the effective date of this offering, or when a holder is able
to sell all its shares pursuant to Rule 144 under the Securities Act in any 90-
day period. Under the investors' rights agreement, we have a contractual right
to prohibit any sales of common stock by the holders for a period of 180 days
following this offering and 90 days following any subsequent public offering by
us. All holders of registerable securities have agreed not to exercise their
registration rights until 180 days following the date of this prospectus
without the consent of Credit Suisse First Boston Corporation.

                                       65


              U.S. FEDERAL TAX CONSIDERATIONS FOR NON-U.S. HOLDERS

   The following is a general discussion of the material U.S. federal income
tax consequences of the ownership and disposition of our common stock to a non-
U.S. holder. In this discussion, a non-U.S. holder is any holder that for U.S.
federal income tax purposes is not a U.S. person. For purposes of this
discussion, the term U.S. person means:

  . a citizen or resident of the United States;

  . a corporation or other entity taxable as a corporation created or
    organized in the United States or under the laws of the United States or
    any political subdivision thereof;

  . an estate whose income is included in gross income for U.S. federal
    income tax purposes regardless of its source; or

  . a trust whose administration is subject to the primary supervision of a
    U.S. court and one or more U.S. persons have the authority to control all
    substantial decisions of the trust.

   If a partnership holds common stock, the tax treatment of a partner will
generally depend on the status of the partner and upon the activities of the
partnership.

   This discussion does not address all aspects of U.S. federal income taxation
that may be relevant in light of a non-U.S. holder's special tax status or
special tax situations. U.S. expatriates, life insurance companies, tax-exempt
organizations, dealers in securities or currency, banks or other financial
institutions, investors whose functional currency is other than the U.S.
dollar, and investors that hold common stock as part of a hedge, straddle or
conversion transaction are among those categories of potential investors that
are subject to special rules not covered in this discussion. This discussion
does not address any tax consequences arising under the laws of any state,
local or non-U.S. taxing jurisdiction. Furthermore, the following discussion is
based on current provisions of the Internal Revenue Code of 1986, as amended,
and administrative and judicial interpretations thereof, all as in effect on
the date hereof, and all of which are subject to change, possibly with
retroactive effect. Accordingly, each non-U.S. holder should consult a tax
advisor regarding the U.S. federal, state, local and non-U.S. income and other
tax consequences of acquiring, holding and disposing of shares of our common
stock.

Dividends

   We have not paid any dividends on our common stock and we do not plan to pay
any dividends for the foreseeable future. However if we do pay dividends on our
common stock, those payments will constitute dividends for U.S. tax purposes to
the extent paid from our current and accumulated earnings and profits, as
determined under U.S. federal income tax principles. To the extent those
dividends exceed our current and accumulated earnings and profits, the
dividends will constitute a return of capital and will first reduce a holder's
basis, but not below zero, and then will be treated as gain from the sale of
stock.

   Any dividend paid to a non-U.S. holder of common stock generally will be
subject to U.S. withholding tax either at a rate of 30% of the gross amount of
the dividend or such lower rate as may be specified by an applicable tax
treaty. In order to receive a reduced treaty rate, a non-U.S. holder must
provide us with an IRS form W-8BEN certifying to us such non-U.S. holder's
qualification for the reduced rate.

   Dividends received by a non-U.S. holder that are effectively connected with
a U.S. trade or business conducted by the non-U.S. holder are exempt from such
withholding tax. In order to obtain this exemption, a non-U.S. holder must
provide us with an IRS Form W-8ECI certifying to us such exemption. Such
effectively connected dividends, although not subject to withholding tax, are
taxed at the same graduated rates applicable to U.S. persons, net of certain
deductions and credits.

                                       66


   In addition to the graduated tax described above, dividends received by a
corporate non-U.S. holder that are effectively connected with a U.S. trade or
business of the corporate non-U.S. holder may also be subject to a branch
profits tax at a rate of 30% or such lower rate as may be specified by an
applicable tax treaty.

   A non-U.S. holder of common stock that is eligible for a reduced rate of
withholding tax pursuant to a tax treaty may obtain a refund of any excess
amounts currently withheld by filing an appropriate claim for refund with the
Internal Revenue Service, or IRS.

Gain on Disposition of Common Stock

   A non-U.S. holder generally will not be subject to U.S. federal income tax
on any gain realized upon the sale or other disposition of our common stock
unless:

  . the gain is effectively connected with a U.S. trade or business of the
    non-U.S. holder (which gain, in the case of a corporate non-U.S. holder,
    must also be taken into account for branch profits tax purposes);

  . the non-U.S. holder is an individual who holds his or her common stock as
    a capital asset (generally, an asset held for investment purposes) and
    who is present in the U.S. for a period or periods aggregating 183 days
    or more during the calendar year in which the sale or disposition occurs
    and certain other conditions are met; or

  . we are or have been a "U.S. real property holding corporation" for U.S.
    federal income tax purposes at any time within the shorter of the five-
    year period preceding the disposition or the holder's holding period for
    our common stock. We have determined that we are not and do not believe
    that we will become a "U.S. real property holding corporation" for U.S.
    federal income tax purposes.

Gift and Estate Taxes

   Gifts of our shares made by non-U.S. holders generally will not be subject
to United States federal gift tax. Shares held by a non-U.S. holder at the time
of death will be included in the non-U.S. holder's gross estate for United
States federal estate tax purposes unless a treaty provides otherwise. A credit
effectively exempts from tax the first $60,000 worth of the holder's United
States taxable estate, which generally includes property situated within the
United States, shares of United States corporations and certain debt
obligations of United States obligors.

Backup Withholding and Information Reporting

   Generally, we must report annually to the IRS the amount of dividends paid,
the name and address of the recipient, and the amount, if any, of tax withheld.
A similar report is sent to the holder. Pursuant to tax treaties or other
agreements, the IRS may make its reports available to tax authorities in the
recipient's country of residence.

   Dividends paid to a non-U.S. holder at an address within the United States
may be subject to backup withholding at a rate of 31% if the non-U.S. holder
fails to establish that it is entitled to an exemption or to provide a correct
taxpayer identification number and other information to the payor. The payment
of dividends to non-U.S. holders at an address outside the United States may be
subject to backup withholding at a rate of 31% unless such non-U.S. holder
qualifies for an exemption.

   Under current Treasury Regulations, the payment of the proceeds of the
disposition of common stock to or through the U.S. office of a broker is
subject to information reporting and backup withholding at a rate of 31% unless
the holder certifies its non-U.S. status under penalties of perjury or
otherwise establishes an exemption. Generally, the payment of the proceeds of
the disposition by a non-U.S. holder of common stock outside the U.S. to or
through a foreign office of a broker will not be subject to backup withholding
but will be subject to information reporting requirements if the broker is a
U.S. person or has certain other connections to the United

                                       67


States, unless the broker has documentary evidence in its files of the holder's
non-U.S. status and certain other conditions are met, or the holder otherwise
establishes an exemption. Neither backup withholding nor information reporting
generally will apply to a payment of the proceeds of a disposition of common
stock to a non-U.S. holder by or through a foreign office of a foreign broker
not subject to the preceding sentence.

   Recently promulgated Treasury Regulations may alter procedures for claiming
benefits of an income tax treaty and change the certification procedures
relating to the receipt by intermediaries of payments on behalf of the
beneficial owner of shares of common stock. Accordingly, non-U.S. holders
should consult their tax advisors regarding the effect, if any, of those final
Treasury Regulations on an investment in our common stock.

   Backup withholding is not an additional tax. Rather, the U.S. income tax
liability of persons subject to backup withholding will be reduced by the
amount of tax withheld. If withholding results in an overpayment of taxes, a
refund may be obtained, provided that the required information is furnished to
the IRS.

                                       68


                                  UNDERWRITING

   Under the terms and subject to the conditions contained in an underwriting
agreement dated June 20, 2001, we have agreed to sell to the underwriters named
below, for whom Credit Suisse First Boston Corporation, Salomon Smith Barney
Inc. and Thomas Weisel Partners LLC are acting as representatives, the
following respective numbers of shares of Class A common stock:



                                                                        Number
   Underwriter                                                         of Shares
   -----------                                                         ---------
                                                                    
   Credit Suisse First Boston Corporation............................. 3,632,500
   Salomon Smith Barney Inc. ......................................... 2,179,500
   Thomas Weisel Partners LLC......................................... 1,453,000
   Bear, Stearns & Co. Inc. ..........................................    70,000
   A.G. Edwards & Sons, Inc. .........................................    70,000
   Dain Rauscher Incorporated.........................................    70,000
   Invemed Associates LLC.............................................    70,000
   U.S. Bancorp Piper Jaffray Inc. ...................................    70,000
   Prudential Securities Incorporated.................................    70,000
   Raymond James & Associates, Inc. ..................................    70,000
   UBS Warburg LLC....................................................    70,000
   Wit SoundView Corporation..........................................    70,000
   Morgan Keegan & Company, Inc. .....................................    35,000
   PMG CAPITAL........................................................    35,000
   C.E. Unterberg, Towbin.............................................    35,000
                                                                       ---------
   Total.............................................................. 8,000,000
                                                                       =========


   The underwriting agreement provides that the underwriters are obligated to
purchase all the shares of Class A common stock in the offering if any are
purchased, other than those shares covered by the over-allotment option
described below. The underwriting agreement also provides that if an
underwriter defaults, the purchase commitments of non-defaulting underwriters
may be increased or the offering may be terminated.

   We have granted to the underwriters a 30-day option to purchase on a pro
rata basis up to 1,200,000 additional shares from us at the initial public
offering price less the underwriting discounts and commissions. This option may
be exercised only to cover any over-allotments of Class A common stock.

   The underwriters propose to offer the shares of Class A common stock
initially at the public offering price on the cover page of this prospectus and
to selling group members at that price less a selling concession of $0.38 per
share. The underwriters and selling group members may allow a discount of $0.10
per share on sales to other broker/dealers. After the initial public offering,
the public offering price and concession and discount to broker/dealers may be
changed by the representatives.

   The following table summarizes the compensation and estimated expenses we
will pay:



                                    Per Share                       Total
                          ----------------------------- -----------------------------
                             Without          With         Without          With
                          Over-allotment Over-allotment Over-allotment Over-allotment
                          -------------- -------------- -------------- --------------
                                                           
Underwriting Discounts
and Commissions paid by
us......................      $0.63          $0.63        $5,040,000     $5,796,000
Expenses payable by us..      $0.28          $0.24        $2,200,000     $2,200,000


   The representatives have informed us that the underwriters do not expect
discretionary sales to exceed 5% of the shares of Class A common stock being
offered.

   We have agreed that we will not offer, sell, contract to sell, pledge or
otherwise dispose of, directly or indirectly, or file with the SEC a
registration statement under the Securities Act relating to, any shares of our
common stock or securities convertible into or exchangeable or exercisable for
any shares of our common stock, or publicly disclose the intention to make any
offer, sale, pledge, disposition or filing, without the prior written consent
of Credit Suisse First Boston Corporation for a period of 180 days after the
date of this prospectus, except

                                       69


grants of options to purchase shares of common stock under any of our stock
option plans disclosed in this prospectus and existing on the date hereof,
issuances of common stock pursuant to the exercise of employee stock options
outstanding on the date hereof and the filing of a Registration Statement on
Form S-8.

   Our officers and directors and all of our shareholders have agreed that they
will not offer, sell, contract to sell, pledge or otherwise dispose of,
directly or indirectly, any shares of our common stock or securities
convertible into or exchangeable or exercisable for any shares of our common
stock, enter into a transaction which would have the same effect, or enter into
any swap, hedge or other arrangement that transfers, in whole or in part, any
of the economic consequences of ownership of our common stock, whether any such
aforementioned transaction is to be settled by delivery of our common stock or
such other securities, in cash or otherwise, or publicly disclose the intention
to make any such offer, sale, pledge or disposition, or to enter into any such
transaction, swap, hedge or other arrangement without, in each case, the prior
written consent of Credit Suisse First Boston Corporation for a period of 180
days after the date of this prospectus. If the reported last sale price of our
common stock on The Nasdaq National Market is at least twice the public
offering price per share shown on the cover page of this prospectus for 20 of
the 30 trading days ending on the last trading day preceding the 90th day after
the date of this prospectus, then 15% of the shares of our outstanding common
stock, or 9,797,922 shares, will be released from these restrictions. The
release of these shares will occur on the later of:

  . the 91st day after this offering; or

  . the second trading day following the public release of our financial
    results for the quarter immediately after this offering.

   The underwriters have reserved for sale, at the initial public offering
price, approximately 325,000 shares of Class A common stock for persons
associated with us who have expressed an interest in purchasing Class A common
stock in this offering. The number of shares available for sale to the general
public in this offering will be reduced to the extent these persons purchase
the reserved shares. Any reserved shares not so purchased will be offered by
the underwriters to the general public on the same terms as the other shares.

   We have agreed to indemnify the underwriters against liabilities under the
Securities Act, or contribute to payments which the underwriters may be
required to make in that respect.

   We have been approved to list the shares of Class A common stock on The
Nasdaq National Market under the symbol "MLTC."

   Affiliates of Credit Suisse First Boston Corporation beneficially own 23,120
shares of our Series B convertible preferred stock which will convert into
231,200 shares of our Class A common stock upon the completion of this
offering. Affiliates of Thomas Weisel Partners LLC beneficially own 25,000
shares of our Series B convertible preferred stock which will convert into
250,000 shares of our Class A common stock upon the completion of this
offering.

   Thomas Weisel Partners LLC, one of the representatives of the underwriters,
was organized and registered as a broker-dealer in December 1998. Since
December 1998, Thomas Weisel Partners LLC has acted as lead-manager or co-
manager on numerous public offerings of equity securities. Thomas Weisel
Partners LLC does not have any material relationship with us or any of our
officers, directors or other controlling persons, except with respect to its
affiliates' ownership of our Series B convertible preferred stock and its
contractual relationship with us under the underwriting agreement entered into
in connection with this offering.

   Prior to this offering, there has been no public market for our Class A
common stock. The initial public offering price will be determined by
negotiation between us and the underwriters and will not necessarily reflect
the market price of the Class A common stock following the offering. The
principal factors that will be considered in determining the public offering
price will include:

  . the information in this prospectus and otherwise available to the
    underwriters;

  . market conditions for initial public offerings;

                                       70


  . the history and the prospects for the industry in which we will compete;

  . the ability of our management;

  . the prospects for our future earnings;

  . the present state of our development and our current financial condition;

  . the recent market prices of, and the demand for, publicly traded common
    stock of generally comparable companies; and

  . the general condition of the securities markets at the time of this
    offering.

   We offer no assurances that the initial public offering price will
correspond to the price at which the Class A common stock will trade in the
public market subsequent to the offering or that an active trading market for
the Class A common stock will develop and continue after the offering.

   In connection with the offering, the underwriters may engage in stabilizing
transactions, over-allotment transactions, syndicate covering transactions and
penalty bids in accordance with Regulation M under the Exchange Act.

  . Stabilizing transactions permit bids to purchase the underlying security
    so long as the stabilizing bids do not exceed a specified maximum.

  . Over-allotment involves sales by the underwriters of shares in excess of
    the number of shares the underwriters are obligated to purchase, which
    creates a syndicate short position. The short position may be either a
    covered short position or a naked short position. In a covered short
    position, the number of shares over-allotted by the underwriters is not
    greater than the number of shares that they may purchase in the over-
    allotment option. In a naked short position, the number of shares
    involved is greater than the number of shares in the over-allotment
    option. The underwriters may close out any short position by either
    exercising their over-allotment option and/or purchasing shares in the
    open market.

  . Syndicate covering transactions involve purchases of the Class A common
    stock in the open market after the distribution has been completed in
    order to cover syndicate short positions. In determining the source of
    shares to close out the short position, the underwriters will consider,
    among other things, the price of shares available for purchase in the
    open market as compared to the price at which they may purchase shares
    through the over-allotment option. If the underwriters sell more shares
    than could be covered by the over-allotment option--a naked short
    position--the position can only be closed out by buying shares in the
    open market. A naked short position is more likely to be created if the
    underwriters are concerned that there could be downward pressure on the
    price of the shares in the open market after pricing that could adversely
    affect investors who purchase in the offering.

  . Penalty bids permit the representatives to reclaim a selling concession
    from a syndicate member when the Class A common stock originally sold by
    the syndicate member is purchased in a stabilizing or syndicate covering
    transaction to cover syndicate short positions.

These stabilizing transactions, syndicate covering transactions and penalty
bids may have the effect of raising or maintaining the market price of our
Class A common stock or preventing or retarding a decline in the market price
of the Class A common stock. As a result, the price of the Class A common stock
may be higher than the price that might otherwise exist in the open market.
These transactions may be effected on The Nasdaq National Market or otherwise
and, if commenced, may be discontinued at any time.

   A prospectus in electronic format will be made available on the web sites
maintained by one or more of the underwriters participating in this offering.
The representatives may agree to allocate a number of shares to underwriters
for sale to their online brokerage account holders. Internet distributions will
be allocated by the underwriters that will make internet distributions on the
same basis as other allocations. Credit Suisse First Boston Corporation may
effect an on-line distribution through its affiliate, CSFBdirect Inc., an on-
line broker/dealer, as a selling group member.

                                       71


                          NOTICE TO CANADIAN RESIDENTS

Resale Restrictions

   The distribution of the Class A common stock in Canada is being made only on
a private placement basis exempt from the requirement that we prepare and file
a prospectus with the securities regulatory authorities in each province where
trades of Class A common stock are made. Any resale of the Class A common stock
in Canada must be made under applicable securities laws which will vary
depending on the relevant jurisdiction, and which may require resales to be
made under available statutory exemptions or under a discretionary exemption
granted by the applicable Canadian securities regulatory authority. Purchasers
are advised to seek legal advice prior to any resale of the Class A common
stock.

Representations of Purchasers

   By purchasing Class A common stock in Canada and accepting a purchase
confirmation, purchasing is representing to us and the dealer from whom the
purchase confirmation is received that:

  . the purchaser is entitled under applicable provincial securities laws to
    purchase the Class A common stock without the benefit of a prospectus
    qualified under those securities laws;

  . where required by law, the purchaser is purchasing as principal and not
    as agent; and

  . the purchaser has reviewed the text above under Resale Restrictions.

Rights of Action (Ontario Purchasers)

   The securities being offered are those of a foreign issuer and Ontario
purchasers will not receive the contractual right of action prescribed by
Ontario securities law. As a result, Ontario purchasers must rely on other
remedies that may be available, including common law rights of action for
damages or rescission or rights of action under the civil liability provisions
of the U.S. federal securities laws.

Enforcement of Legal Rights

   All of the issuer's directors and officers as well as the experts named may
be located outside of Canada and, as a result, it may not be possible for
Canadian purchasers to effect service of process within Canada upon the issuer
or such persons. All or a substantial portion of the assets of the issuer and
such persons may be located outside of Canada and, as a result, it may not be
possible to satisfy a judgment against the issuer or such persons in Canada or
to enforce a judgment obtained in Canadian courts against such issuer or
persons outside of Canada.

Notice to British Columbia Residents

   A purchaser of Class A common stock to whom the Securities Act (British
Columbia) applies is advised that such purchaser is required to file with the
British Columbia Securities Commission a report within ten days of the sale of
any Class A common stock acquired by such purchaser pursuant to this offering.
The report must be in the form attached to British Columbia Securities
Commission Blanket Order BOR #95/17, a copy of which may be obtained from us.
Only one report must be filed for Class A common stock acquired on the same
date and under the same prospectus exemption.

Taxation and Eligibility for Investment

   Canadian purchasers of Class A common stock should consult their own legal
and tax advisors with respect to the tax consequences of an investment in the
Class A common stock in their particular circumstances and about the
eligibility of the Class A common stock for investment by the purchaser under
relevant Canadian legislation.

                                       72


                                 LEGAL MATTERS

   Allen Matkins Leck Gamble & Mallory LLP, Century City, California, will pass
on the legality of the Class A common stock offered by this prospectus. As of
the date of this prospectus, Allen Matkins and its affiliates own or have the
right to purchase 481,800 shares of our Class A common stock. Cravath, Swaine &
Moore, New York, New York, has represented the underwriters.

                                    EXPERTS

   The financial statements of Multilink Technology Corporation as of December
31, 1999 and 2000, and for each of the three years in the period ended December
31, 2000, included in this prospectus have been audited by Deloitte & Touche
LLP, independent auditors, as stated in their report appearing herein (which
report expresses an unqualified opinion and includes an explanatory paragraph
referring to a restatement of the 2000 financial statements), and have been so
included in reliance upon the report of such firm given upon their authority as
experts in auditing and accounting.

                             ADDITIONAL INFORMATION

   We have filed with the SEC a registration statement on Form S-1. This
prospectus, which forms a part of the registration statement, does not contain
all the information included in the registration statement. Certain information
is omitted and you should refer to the registration statement and its exhibits.
With respect to references made in this prospectus to any of our contracts or
other documents, such references are not necessarily complete and you should
refer to the exhibits attached to the registration statement for copies of the
actual contract or document. You may read and copy the registration statement,
including exhibits and schedules filed with it, at the SEC's public reference
facilities in Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549. You may obtain information on the operation of the SEC's public
reference facilities by calling the SEC at 1-800-SEC-0330. The SEC maintains a
website (http://www.sec.gov) that contains reports, proxy and information
statements and other information regarding registrants, such as us, that file
electronically with the SEC.

   Upon completion of this offering, we will become subject to the information
and periodic reporting requirements under the Exchange Act and, in accordance
with this law, will file periodic reports, proxy statements and other
information with the SEC. These periodic reports, proxy statements and other
information will be available for inspection and copying at the SEC's public
reference facilities and the website of the SEC referred to above.


                                       73


                        MULTILINK TECHNOLOGY CORPORATION

                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS



                                                                            Page
                                                                            ----
                                                                         
Independent Auditors' Report............................................... F-2
Consolidated Balance Sheets................................................ F-3
Consolidated Statements of Operations...................................... F-4
Consolidated Statements of Shareholders' Equity (Deficit).................. F-5
Consolidated Statements of Cash Flows...................................... F-6
Notes to Consolidated Financial Statements................................. F-7


                                      F-1


                          INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Shareholders
Multilink Technology Corporation:

   We have audited the accompanying consolidated balance sheets of Multilink
Technology Corporation and subsidiaries (the "Company") as of December 31, 1999
and 2000, and the related consolidated statements of operations, shareholders'
equity (deficit), and cash flows for each of the three years in the period
ended December 31, 2000. These financial statements are the responsibility of
the Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.

   We conducted our audits in accordance with auditing standards generally
accepted in the United States of America. Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the
financial statements are free of material misstatement. An audit includes
examining, on a test basis, evidence supporting the amounts and disclosures in
the financial statements. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for our opinion.

   In our opinion, such consolidated financial statements present fairly, in
all material respects, the financial position of the Company as of December 31,
1999 and 2000, and the results of its operations and its cash flows for each of
the three years in the period ended December 31, 2000 in conformity with
accounting principles generally accepted in the United States of America.

   As discussed in note 15, the accompanying 2000 financial statements have
been restated.

/s/ DELOITTE & TOUCHE LLP

Parsippany, New Jersey
February 14, 2001
(except for note 15, as to
which the date is May 31, 2001)

                                      F-2


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

                          CONSOLIDATED BALANCE SHEETS
           December 31, 1999 and 2000 and March 31, 2001 (Unaudited)



                                                                      Pro Forma
                                                                    Shareholders'
                               December 31,                            Equity
                         --------------------------    March 31,      March 31,
                                          2000           2001           2001
                            1999      -------------  -------------  -------------
                                      (As restated,  (As restated,  (As restated,
                                      see note 15)   see note 15)   see note 15)
                                                             (Unaudited)
                                                        
ASSETS
Current assets:
 Cash and cash
  equivalents........... $ 8,997,086   $29,158,525   $ 20,876,862
 Accounts receivable,
  net of allowance for
  uncollectible accounts
  of $51,000, $132,570
  and $188,502 as of
  December 31, 1999 and
  2000 and March 31,
  2001, respectively....   5,216,702    13,770,479     14,667,297
 Inventories............   5,002,280    17,264,255     15,636,173
 Prepaid expenses and
  other current assets..     346,957     6,538,018     10,464,483
                         -----------  ------------   ------------
   Total current
    assets..............  19,563,025    66,731,277     61,644,815
                         -----------  ------------   ------------
Property and equipment,
 net....................   2,667,877    17,764,697     21,063,437
Deferred income taxes...         --      2,573,473      3,581,294
Other assets............     413,400     3,196,750      4,709,416
                         -----------  ------------   ------------
   Total assets......... $22,644,302   $90,266,197   $ 90,998,962
                         ===========  ============   ============

LIABILITIES AND SHAREHOLDERS' EQUITY (DEFICIT)

Current liabilities:
 Accounts payable....... $ 2,691,143  $ 10,987,531   $ 10,560,650
 Accrued expenses.......   1,015,741    11,287,869     11,867,403
 Accrued warranty
  costs.................     254,360       785,633      1,008,448
 Software and equipment
  financing--current
  portion...............         --        684,854        960,042
 Lease obligations--
  current portion.......     493,804       636,043        649,214
 Income taxes payable...         --        701,752      1,681,586
                         -----------  ------------   ------------
   Total current
    liabilities.........   4,455,048    25,083,682     26,727,343
                         -----------  ------------   ------------
Lease obligations--net
 of current portion.....   1,537,568       773,048        591,197
Software and equipment
 financing--net of
 current portion........         --        245,066        799,186
Line of credit from
 shareholder............   2,387,962           --             --
                         -----------  ------------   ------------

Commitments and
 contingencies

Redeemable convertible
 preferred stock:
 Series A; $.0001 par
  value; 9,000,000
  shares authorized;
  1,711,640 issued and
  outstanding as of
  December 31, 1999 and
  2000 and March 31,
  2001 (actual); no
  shares issued and
  outstanding as of
  March 31, 2001 (pro
  forma)................  14,978,163    15,073,259     15,097,033            --
 Series B; $.0001 par
  value; 1,000,000
  shares authorized,
  none issued and
  outstanding as of
  December 31, 1999;
  1,000,000 issued and
  outstanding as of
  December 31, 2000 and
  March 31, 2001
  (actual); no shares
  issued and outstanding
  as of March 31, 2001
  (pro forma)...........         --     40,000,000     40,000,000            --
Shareholders' equity
 (deficit):
 Common stock, $.0001
  par value:
 Class A: 200,000,000
  shares authorized,
  none issued and
  outstanding at
  December 31, 1999;
  2,048,750 issued and
  outstanding as of
  December 31, 2000;
  2,107,083 issued and
  outstanding as of
  March 31, 2001
  (actual) 29,223,483
  issued and
  outstanding as of
  March 31, 2001 (pro
  forma)................         --            205            211          2,923
 Class B: 100,000,000
  shares authorized;
  30,000,000 shares
  issued and
  outstanding as of
  December 31, 1999;
  28,000,000 issued and
  outstanding as of
  December 31, 2000 and
  March 31, 2001
  (actual and pro
  forma)................       3,000         2,800          2,800          2,800
 Additional paid-in-
  capital...............   7,077,088    34,162,156     40,627,923     95,722,244
 Deferred stock
  compensation..........  (5,365,749)  (12,601,155)   (15,623,600)   (15,623,600)
 Accumulated deficit....  (2,443,083)  (12,487,372)   (16,938,768)   (16,938,768)
 Accumulated other
  comprehensive income
  (loss)................      14,305        14,508       (284,363)      (284,363)
                         -----------  ------------   ------------   ------------
   Total shareholders'
    equity (deficit)....    (714,439)    9,091,142      7,784,203   $ 62,881,236
                         -----------  ------------   ------------   ============
   Total liabilities and
    shareholders' equity
    (deficit)........... $22,644,302  $ 90,266,197   $ 90,998,962
                         ===========  ============   ============


          See accompanying notes to consolidated financial statements.

                                      F-3


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

                     CONSOLIDATED STATEMENTS OF OPERATIONS
                  Years Ended December 31, 1998, 1999 and 2000
     and Three Months Ended March 31, 2000 (Unaudited) and 2001 (Unaudited)



                                                                   Three Months Ended March
                                 Year Ended December 31,                      31,
                          ---------------------------------------  --------------------------
                             1998         1999          2000          2000          2001
                          -----------  -----------  -------------  -----------  -------------
                                                    (As restated,               (As restated,
                                                    see note 15)                see note 15)
                                                                          (Unaudited)
                                                                 
Revenues
 Product................  $ 2,125,748  $19,383,258  $ 72,720,505   $12,347,592   $31,067,926
 Development............    1,725,816    1,011,744           --            --            --
                          -----------  -----------  ------------   -----------   -----------
   Total revenues.......    3,851,564   20,395,002    72,720,505    12,347,592    31,067,926
                          -----------  -----------  ------------   -----------   -----------
Cost of revenues
 Product................      793,788    6,113,690    27,047,794     4,816,557    11,349,011
 Inventory write down...          --           --            --            --      4,895,112
 Development............    1,053,391      634,192           --            --            --
 Deferred stock
  compensation..........          --        19,031       834,093        29,000       476,544
                          -----------  -----------  ------------   -----------   -----------
Total cost of revenues..    1,847,179    6,766,913    27,881,887     4,845,557    16,720,667
                          -----------  -----------  ------------   -----------   -----------
Gross profit............    2,004,385   13,628,089    44,838,618     7,502,035    14,347,259
                          -----------  -----------  ------------   -----------   -----------
Operating expenses:
 Research and
  development,
  excluding deferred
  stock compensation....    2,218,472    8,778,922    24,624,361     3,847,581    12,535,863
 Research and
  development--warrant
  issuance..............          --           --      6,375,000           --            --
 Sales and marketing,
  excluding deferred
  stock compensation....      349,180    2,291,780     7,130,192     1,185,944     3,527,379
 General and
  administrative,
  excluding deferred
  stock compensation....      391,284    1,767,146     7,611,023     1,225,569     2,945,521
 Deferred stock
  compensation..........      343,870      803,551     6,076,132       808,857     2,580,978
                          -----------  -----------  ------------   -----------   -----------
   Total operating
    expenses............    3,302,806   13,641,399    51,816,708     7,067,951    21,589,741
                          -----------  -----------  ------------   -----------   -----------
Operating income
 (loss).................   (1,298,421)     (13,310)   (6,978,090)      434,084    (7,242,482)
Other income and
 expenses
 Interest expense.......     (188,417)    (226,564)     (310,125)     (149,659)      (96,555)
 Other income
  (including $130,121
  of equity losses in
  affiliate during the
  three months ended
  March 31, 2001).......          --       283,632     1,870,508        86,580       211,831
                          -----------  -----------  ------------   -----------   -----------
Income (loss) before
 provision (benefit) for
 income taxes...........   (1,486,838)      43,758    (5,417,707)      371,005    (7,127,206)
Provision (benefit) for
 income taxes...........          800       19,218    (1,748,418)          --     (2,675,810)
                          -----------  -----------  ------------   -----------   -----------
Net income (loss).......   (1,487,638)      24,540    (3,669,289)      371,005    (4,451,396)
Accretion of redeemable
 convertible preferred
 stock to redemption
 value..................          --        47,548        95,096        23,774        23,774
Dividend related to
 warrant issuance.......          --           --      6,375,000           --            --
                          -----------  -----------  ------------   -----------   -----------
Net income (loss)
 attributable to common
 shareholders...........  $(1,487,638) $   (23,008) $(10,139,385)  $   347,231   $(4,475,170)
                          ===========  ===========  ============   ===========   ===========
Net income (loss) per
 share:
 Basic..................  $     (0.05) $      0.00  $      (0.34)  $      0.01   $     (0.15)
                          ===========  ===========  ============   ===========   ===========
 Diluted................  $     (0.05) $      0.00  $      (0.34)  $      0.01   $     (0.15)
                          ===========  ===========  ============   ===========   ===========
Weighted average shares
 of common stock:
 Basic..................   30,000,000   30,000,000    30,000,000    30,000,000    30,060,417
                          ===========  ===========  ============   ===========   ===========
 Diluted................   30,000,000   30,000,000    30,000,000    67,538,742    30,060,417
  The composition of the amortization of deferred stock compensation is as follows:
Research and
 development............  $   343,870  $   216,404  $  2,824,406   $   177,653   $ 1,381,342
Sales and marketing.....          --        31,071       536,526        44,408       422,302
General and
 administrative.........          --       556,076     2,715,200       586,796       777,334
                          -----------  -----------  ------------   -----------   -----------
 Total..................  $   343,870  $   803,551  $  6,076,132   $   808,857   $ 2,580,978
                          ===========  ===========  ============   ===========   ===========



          See accompanying notes to consolidated financial statements.

                                      F-4


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

           CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT)
 Years Ended December 31, 1998, 1999 and 2000 and Three Months Ended March 31,
                               2001 (Unaudited)



                                                          Additional     Deferred
                                                            Paid-in    Stock-Based
                         Class A           Class B        Capital (As  Compensation  Accumulated    Accumulated   Total (As
                       Common Stock     Common Stock       restated,       (As       Deficit (As       Other      restated,
                     ---------------- ------------------   see note     restated,     restated,    Comprehensive     see
                      Shares   Amount   Shares    Amount      15)      see note 15)  see note 15)  Income (Loss)  note 15)
                     --------- ------ ----------  ------  -----------  ------------  ------------  ------------- -----------
                                                                                      
 BALANCE, JANUARY
 1, 1998..........                    30,000,000  $3,000  $   131,250                $   (979,985)   $ (10,258)  $  (855,993)
 Deferred stock
 compensation.....                                            499,500  $   (499,500)                                     --
 Amortization of
 deferred stock
 compensation.....                                                          343,870                                  343,870
 Comprehensive
 income:
  Net loss........                                                                     (1,487,638)                (1,487,638)
  Other
  comprehensive
  income--Foreign
  currency
  translation
  adjustment......                                                                                       4,839         4,839
                                                                                                                 -----------
 Comprehensive
 loss.............                                                                                                (1,482,799)
                     ---------  ----  ----------  ------  -----------  ------------  ------------    ---------   -----------
 BALANCE, DECEMBER
 31, 1998.........                    30,000,000   3,000      630,750      (155,630)   (2,467,623)      (5,419)   (1,994,922)
 Warrants issued
 in connection
 with the Series A
 preferred stock
 financing........                                            330,549                                                330,549
 Warrants issued
 in connection
 with equipment
 financing........                                            130,636                                                130,636
 Deferred stock
 compensation.....                                          6,032,701    (6,032,701)                                     --
 Amortization of
 deferred stock
 compensation.....                                                          822,582                                  822,582
 Accretion of
 redeemable
 convertible
 preferred stock..                                            (47,548)                                               (47,548)
 Comprehensive
 income:
  Net income......                                                                         24,540                     24,540
  Other
  comprehensive
  income--Foreign
  currency
  translation
  adjustment......                                                                                      19,724        19,724
                                                                                                                 -----------
 Comprehensive
 income...........                                                                                                    44,264
                     ---------  ----  ----------  ------  -----------  ------------  ------------    ---------   -----------
 BALANCE, DECEMBER
 31, 1999.........                    30,000,000   3,000    7,077,088    (5,365,749)   (2,443,083)      14,305      (714,439)
 Conversion of
 Class B common
 stock to Class A
 common stock.....   2,000,000   200  (2,000,000)   (200)                                                                --
 Stock option plan
 transactions
 including related
 income tax
 benefit..........      48,750     5                          115,277                                                115,282
 Deferred stock
 compensation.....                                         14,145,631   (14,145,631)                                     --
 Amortization of
 deferred stock
 compensation.....                                                        6,910,225                                6,910,225
 Accretion of
 redeemable
 convertible
 preferred stock..                                            (95,096)                                               (95,096)
 Warrant
 issuances........                                          6,544,256                                              6,544,256
 Dividend related
 to warrant
 issuances........                                          6,375,000                  (6,375,000)                       --
 Comprehensive
 income:
  Net loss........                                                                     (3,669,289)                (3,669,289)
  Other
  comprehensive
  loss--Foreign
  currency
  translation
  adjustment......                                                                                         203           203
                                                                                                                 -----------
 Comprehensive
 loss.............                                                                                                (3,669,086)
                     ---------  ----  ----------  ------  -----------  ------------  ------------    ---------   -----------
 BALANCE, DECEMBER
 31, 2000.........   2,048,750   205  28,000,000   2,800   34,162,156   (12,601,155)  (12,487,372)      14,508     9,091,142
 The 2001
 activity, as
 follows, is
 unaudited:
 Stock option plan
 transactions
 including related
 income tax
 benefit..........      58,333     6                          409,574                                                409,580
 Deferred stock
 compensation.....                                          6,079,967    (6,079,967)                                     --
 Amortization of
 deferred stock
 compensation.....                                                        3,057,522                                3,057,522
 Accretion of
 redeemable
 convertible
 preferred stock..                                            (23,774)                                               (23,774)

 Comprehensive
 Income:
 Net loss.........                                                                     (4,451,396)                (4,451,396)
 Other
 comprehensive
 income--
  Foreign currency
  translation
  adjustment......                                                                                     (73,213)      (73,213)
  Cash flow hedges
  reclassification
  adjustments.....                                                                                    (225,658)     (225,658)
                                                                                                                 -----------
 Comprehensive
 loss.............                                                                                                (4,750,267)
                     ---------  ----  ----------  ------  -----------  ------------  ------------    ---------   -----------
 BALANCE MARCH 31,
 2001.............   2,107,083  $211  28,000,000  $2,800  $40,627,923  $(15,623,600) $(16,938,768)   $(284,363)  $ 7,784,203
                     =========  ====  ==========  ======  ===========  ============  ============    =========   ===========


         See accompanying notes to consolidated financial statements.

                                      F-5


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                  Years Ended December 31, 1998, 1999 and 2000
     and Three Months Ended March 31, 2000 (Unaudited) and 2001 (Unaudited)



                                                                     Three Months Ended
                                 Year Ended December 31,                  March 31,
                          ---------------------------------------  ------------------------
                             1998         1999          2000          2000         2001
                          -----------  -----------  -------------  -----------  -----------
                                                                         (Unaudited)
                                                    (As restated,                (As restated,
                                                    see note 15)                 see note 15)
                                                                           
Cash flows from
 operating activities:
 Net income (loss)......  $(1,487,638) $    24,540  $ (3,669,289)  $   371,005  $(4,451,396)
 Adjustments to
  reconcile net income
  (loss) to net cash
  provided by (used in)
  operating activities:
  Warrant issuances.....          --           --      6,544,256           --           --
  Depreciation and
   amortization.........       59,737      292,628     2,647,732       204,121    1,802,210
  Deferred stock
   compensation.........      343,870      822,582     6,910,225       837,857    3,057,522
  Amortization of
   discount on line of
   credit from
   shareholder..........       74,375          --            --            --           --
  Interest expense on
   line of credit from
   shareholder..........      161,398      226,564        61,206        61,206          --
  Deferred income
   taxes................          --           --     (5,728,081)          --    (4,034,124)
  Equity losses in
   affiliate............          --           --            --            --       130,121
  Changes in operating
   assets and
   liabilities:
   Accounts receivable..     (502,250)  (4,555,388)   (8,609,777)   (4,193,623)    (896,818)
   Inventories..........     (271,751)  (4,633,683)  (12,261,975)     (973,936)   1,628,082
   Costs and estimated
    earnings in excess
    of billings on
    uncompleted
    contracts...........      (54,519)     159,376           --            --           --
   Prepaid expenses and
    other current
    assets..............      (26,753)    (315,778)   (3,036,453)      (19,272)    (775,201)
   Other assets.........       (2,106)    (275,179)     (438,307)      (28,921)      23,879
   Accounts payable.....      655,828    1,842,376     8,296,388     1,774,945     (426,881)
   Accrued expenses.....      143,032      744,446     8,616,910      (424,157)     494,890
   Accrued warranty
    costs...............      (25,813)      69,988       531,273        42,306      222,815
   Accrued loss on
    uncompleted
    contract............      (22,643)         --            --            --           --
   Billings in excess of
    costs and estimated
    earnings on
    uncompleted
    contracts...........      158,702     (222,031)          --            --           --
   Income taxes
    payable.............          --           --        797,721           --     1,053,999
   Customer deposit.....      (95,900)         --            --            --           --
                          -----------  -----------  ------------   -----------  -----------
    Net cash (used in)
     provided by
     operating
     activities.........     (892,431)  (5,819,559)      661,829    (2,348,469)  (2,170,902)
                          -----------  -----------  ------------   -----------  -----------
Cash flows from
 investing activities:
 Purchases of property
  and equipment.........      (68,538)    (695,491)  (15,036,147)     (466,366)  (4,260,312)
 Purchase of non-
  marketable
  securities............          --           --     (2,388,588)          --    (1,666,666)
                          -----------  -----------  ------------   -----------  -----------
 Net cash used in
  investing activities..      (68,538)    (695,491)  (17,424,735)     (466,366)  (5,926,978)
                          -----------  -----------  ------------   -----------  -----------
Cash flows from
 financing activities:
 Issuance of preferred
  stock, net............          --    15,261,164    37,550,832    23,000,000          --
 Borrowings under line
  of credit from
  shareholder...........    1,000,000          --            --            --           --
 Payments on lease
  obligations and
  software and equipment
  financing.............      (13,984)     (46,450)     (622,281)     (107,240)    (516,132)
 Proceeds from stock
  option exercises......          --           --            --            --       354,728
                          -----------  -----------  ------------   -----------  -----------
    Net cash (used in)
     provided by
     financing
     activities.........      986,016   15,214,714    36,928,551    22,892,760     (161,404)
                          -----------  -----------  ------------   -----------  -----------
Effect of exchange rate
 changes on cash........        4,194       (5,214)       (4,206)       22,432      (22,379)
                          -----------  -----------  ------------   -----------  -----------
Net increase (decrease)
 in cash and cash
 equivalents............       29,241    8,694,450    20,161,439    20,055,494   (8,281,663)
Cash and cash
 equivalents, beginning
 of period..............      273,395      302,636     8,997,086     8,997,086   29,158,525
                          -----------  -----------  ------------   -----------  -----------
Cash and cash
 equivalents, end of
 period.................  $   302,636  $ 8,997,086  $ 29,158,525   $29,052,580  $20,876,862
                          ===========  ===========  ============   ===========  ===========
Supplemental disclosures
 of cash flow
 information--Cash paid
 during the period for:
 Income taxes...........  $       800  $    38,800  $  3,169,000   $   190,000  $ 1,150,000
 Interest...............  $     1,904  $     4,318  $    248,919   $    88,453  $    96,555


          See accompanying notes to consolidated financial statements.

                                      F-6


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

1. BUSINESS AND BASIS OF PRESENTATION

   Multilink Technology Corporation and its subsidiaries (collectively, the
"Company") are in the business of designing, developing, and marketing high-
bandwidth, advanced integrated circuits, modules and higher-level assemblies
that enable next generation optical networking systems. The Company was
incorporated in 1994, and is headquartered in Somerset, New Jersey. The Company
has wholly-owned subsidiaries located in Bochum, Germany ("Multilink GmbH"),
Vilnius, Lithuania ("UAB Multilink Technology") and Yavne, Israel ("MLTC
Israel, Ltd.").

   On May 31, 2000, the Company's board of directors approved a ten-for-one
stock split. The Company's consolidated financial statements have been
retroactively adjusted to show the effect of this stock split for all periods
presented.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

   Unaudited Condensed Consolidated Interim Financial Statements--The condensed
consolidated financial statements as of March 31, 2001 and for the three months
ended March 31, 2000 and 2001 are unaudited. In the opinion of management, the
unaudited financial statements have been prepared on the same basis as the
audited financial statements and include all adjustments, consisting of normal
recurring adjustments necessary for a fair presentation of the financial
position and the results of operations as of such date and for such periods,
except as discussed in note 3. Results of interim periods are not necessarily
indicative of the results to be expected for the entire fiscal year. The
interim tax provision is computed utilizing the estimated effective annual
income tax rate.

   Principles of Consolidation--The accompanying consolidated financial
statements include the accounts of Multilink Technology Corporation and its
wholly owned subsidiaries, Multilink GmbH, UAB Multilink Technology and MLTC
Israel, Ltd. Intercompany accounts and transactions have been eliminated in
consolidation.

   Use of Estimates--The preparation of financial statements in conformity with
accounting principles generally accepted in the United States of America
requires management to make estimates and assumptions that affect the reported
amounts of assets and liabilities and disclosure of contingent assets and
liabilities at the date of the financial statements and the reported amounts of
revenues and expenses during the reporting period. Actual results could differ
from those estimates.

   Concentration of Credit Risk--Financial instruments that potentially subject
the Company to concentration of credit risk consists principally of cash, cash
equivalents and accounts receivable. The Company places its cash and cash
equivalents with high-credit, quality institutions and limits the amount of
credit exposure to any one institution. The Company's accounts receivable arise
from sales directly to customers. The Company performs ongoing credit
evaluations of its customers before granting uncollateralized credit and
provides allowances for estimated credit losses. To date the Company has not
experienced any material credit losses. The following is a summary of the
percentage of revenues from major customers:



                                                                  Three Months
                                                  Year Ended          Ended
                                                 December 31,       March 31,
                                                ----------------  ---------------
                                                1998  1999  2000   2000     2001
                                                ----  ----  ----  ------   ------
                                                            
   Lucent......................................  10%   36%   34%      41%       *
   Alcatel.....................................   *    20%   28%      26%      49%
   TyCom.......................................  39%   18%    *        *       16%
   Cisco.......................................   *     *    11%      14%      10%
   JDS Uniphase................................  12%    *     *        *        *

- ---------------------
*  Customer's sales represented less than 10% of total sales in the respective
   period.

                                      F-7


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)




                                                  December 31,
                                                  ---------------   March 31,
                                                   1999     2000      2001
                                                  ------   ------   ---------
                                                           
   Customer gross accounts receivable as a
    percent of total gross accounts receivable:
     Lucent......................................     25%      21%       *
     Alcatel.....................................     29%      34%      40%
     TyCom.......................................     23%      12%      20%
     Cisco.......................................      *        *       11%
     Marconi.....................................      *        *       10%


   Foreign Currency Translation--Assets and liabilities of Multilink GmbH and
UAB Multilink Technology are translated into U.S. dollars using the exchange
rates in effect at the balance sheet date. Results of operations are translated
using the average exchange rates prevailing throughout the period. The
aggregate effect of translating the financial statements of Multilink GmbH, UAB
Multilink Technology and MLTC Israel, Ltd. into U.S. dollars is included as a
separate component of accumulated other comprehensive income (loss) in the
accompanying statement of shareholders' equity (deficit).

   Cash Equivalents--The Company classifies all highly liquid investments
purchased with maturities of three months or less as cash equivalents.

   Inventories--Inventories are stated at the lower of cost (first-in, first-
out) or market.

   Property and Equipment--Property and equipment are recorded at cost.
Depreciation and amortization are provided for using the straight-line method
over the estimated useful lives of the respective assets.

   Research and Development--Research and development costs are expensed as
incurred, except for engineering and design software, which is capitalized and
amortized on a straight-line basis over the life of the software, which
generally ranges from 3 to 5 years.

   Impairment of Long-Lived Assets--The Company evaluates long-lived assets for
impairment whenever events or changes in circumstances indicate that the
carrying value of an asset may no longer be recoverable. If the estimated
future cash flows (undiscounted and without interest charges) from the use of
an asset are less than the carrying value, a write-down would be recorded to
reduce the related asset to its estimated fair value. For purposes of
estimating future cash flows from possibly impaired assets, the Company groups
assets at the lowest level for which there are identifiable cash flows that are
largely independent of the cash flows of other groups of assets. Based upon the
above described evaluation, the Company has concluded that its long-lived
assets are not impaired.

   Investments--The Company's investments in which it does not have significant
influence over the investee are accounted for at cost. The Company reviews such
investments for any unrealized losses deemed to be other than temporary. The
Company will recognize an investment loss currently when it deems that such
unrealized losses are other than temporary.

   The Company's investment in which it has significant influence over the
investee is accounted for in accordance with the equity method of accounting
under which the consolidated results include the Company's share of income or
loss of such investee.

   Unaudited Pro Forma Net Loss Per Share and Unaudited Pro Forma Shareholders'
Equity--Pro forma net loss per share has been computed to give effect to the
fact that, if the offering contemplated by this

                                      F-8


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

prospectus is consummated it would result in the conversion of all of the
Series A and Series B redeemable convertible preferred stock outstanding at
March 31, 2001 (using the if-converted method) into an aggregate 27,116,400
shares of Class A common stock (see Note 6).

   Unaudited pro forma shareholders' equity at March 31, 2001, as adjusted for
the conversion of redeemable convertible preferred stock into Class A common
stock, is reflected on the consolidated balance sheet. Pro forma basic and
diluted net loss per share is as follows:



                                            December 31,          Three Months
                                       ------------------------      Ended
                                          1999         2000      March 31, 2001
                                       ----------  ------------  --------------
                                                        
Net loss attributable to common
 shareholders........................  $  (23,008) $(10,139,385)  $(4,475,170)
Accretion of redeemable preferred
 stock...............................      47,548        95,096        23,774
                                       ----------  ------------   -----------
Adjusted net income (loss)
 attributable to common
 shareholders........................  $   24,540  $(10,044,289)  $(4,451,396)
                                       ==========  ============   ===========
Shares used in computing basic net
 income (loss) per share.............  30,000,000    30,000,000    30,060,417
Adjusted to reflect the effect of the
 assumed conversion of all redeemable
 convertible preferred stock from the
 date of issuance....................   9,519,532    24,225,603    27,116,400
                                       ----------  ------------   -----------
Weighted average shares used in
 computing pro forma basic net income
 (loss) per share....................  39,519,532    54,225,603    57,176,817
                                       ==========  ============   ===========
Pro forma basic net income (loss) per
 share attributable to common
 shareholders........................  $     0.00  $      (0.19)  $     (0.08)
                                       ==========  ============   ===========


   Revenue Recognition--Product revenue is recognized upon shipment.
Development revenues are recognized using the percentage-of-completion method,
measured by the percentage of costs incurred to date to estimated total costs
for each contract. Contract costs include all direct material and labor costs
and those indirect costs related to contract performance, such as indirect
labor, supplies, tools, repairs, and depreciation and amortization. Provisions
for estimated losses on uncompleted contracts are made in the period in which
such losses are determined.

   Warranty Costs--Substantially all of the Company's products are sold with a
one-year warranty. Development contract costs include a provision for estimated
product warranties to be provided by the Company upon contract completion and
product shipment. Estimated warranty costs for all other products are provided
for upon shipment to customers.

   Income Taxes--Deferred income tax assets and liabilities are computed
annually based on enacted tax laws and rates for temporary differences between
the financial accounting and income tax bases of assets and liabilities. A
valuation allowance is established, when necessary, to reduce deferred income
tax assets to the amount that is more likely than not to be realized.

   Equity-Based Compensation--The Company accounts for stock-based employee
compensation arrangements in accordance with provisions of Accounting
Principles Board ("APB") Opinion No. 25, "Accounting for Stock Issued to
Employees," and complies with the disclosure provisions of Statement of
Financial Accounting Standards ("SFAS") No. 123, "Accounting for Stock-Based
Compensation." Under APB Opinion No. 25, compensation expense is based on the
difference, if any, on the date of grant, between the fair value of the
Company's stock and the exercise price. The Company accounts for stock options
issued to nonemployees in accordance with the provisions of SFAS No. 123, and
Emerging Issues Task Force Consensus on Issue No. 96-18, "Accounting for Equity
Instruments That Are Issued to Other Than Employees for Acquiring, or in
Conjunction with Selling, Goods or Services." The Company is amortizing
deferred stock

                                      F-9


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

compensation using the graded vesting method, in accordance with Financial
Accounting Standards Board Interpretation No. 28, over the vesting period of
each respective option, which is generally four years.

   Net Income (Loss) Per Share of Common Stock--Basic net income or loss per
share excludes dilution for potentially dilutive securities and is computed by
dividing net income or loss attributable to common shareholders by the weighted
average number of common shares outstanding during the period. Diluted net
income or loss per share reflects the potential dilution that could occur if
securities or other instruments to issue common stock were exercised or
converted into common stock. Potentially dilutive securities are excluded from
the computation of diluted net income or loss per share when their inclusion
would be antidilutive. A reconciliation between basic and diluted weighted
average shares outstanding is as follows:



                                       December 31,                    March 31,
                             ----------------------------------  ---------------------
                                1998        1999        2000        2000       2001
                             ----------  ----------  ----------  ---------- ----------
                                                             
   Weighted average shares
    outstanding, basic.....  30,000,000  30,000,000  30,000,000  30,000,000 30,060,417
   Dilutive shares issuable
    in connection with
    stock plans............     843,226   7,418,485  21,081,411  19,821,309 18,007,407
   Dilutive shares issuable
    in connection with
    warrants granted.......         --      194,928   1,131,826     601,033  2,984,250
   Conversion of preferred
    stock to common stock
    .......................         --    9,451,638  24,225,603  17,116,400 27,116,400
                             ----------  ----------  ----------  ---------- ----------
   Weighted average shares
    outstanding, diluted...  30,843,226* 47,065,051* 76,438,840* 67,538,742 78,168,474*
                             ==========  ==========  ==========  ========== ==========


   * Since there was a loss attributable to common shareholders in these
periods, the basic weighted average shares outstanding were used in calculating
diluted loss per share, as inclusion of the incremental shares shown in this
calculation would be antidilutive.

   Fair Value of Financial Instruments--SFAS No. 107, "Disclosures About Fair
Value of Financial Instruments," requires disclosure about the fair value of
financial instruments whether or not such instruments are recognized in the
balance sheet. Due to the short-term nature of the Company's financial
instruments, other than debt, fair values are not materially different from
their carrying values. Based on the borrowing rates available to the Company
for similar variable rate debt, the carrying value of capital lease obligations
and the software and equipment financing obligations approximates fair value.
The fair value of the line of credit from shareholder cannot be determined due
to its related-party nature.

   Segments--The Company has adopted SFAS No. 131, "Disclosure about Segments
of an Enterprise and Related Information," which requires companies to report
selected information about operating segments, as well as enterprise-wide
disclosures about products and services, geographic areas and major customers.
Operating segments are determined based on the way management organizes its
business for making operating decisions and assessing performance. The Company
has determined that it conducts its operations in one business segment, the
development and marketing of products that enable next generation optical
networking systems.

   Effects of Recent Accounting Pronouncements--In June 1998, June 1999 and
June 2000, the Financial Accounting Standards Board ("FASB") issued SFAS No.
133, "Accounting for Derivative Instruments and

                                      F-10


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

Hedging Activities," SFAS No. 137, "Accounting for Derivative Instruments and
Hedging Activities--Deferral of the Effective Date of FASB Statement No. 133,"
and SFAS No. 138, "Accounting for Derivative Instruments and Hedging
Activities--An Amendment of SFAS No. 133." SFAS No. 133, as amended, requires
the recognition of all derivatives as either assets or liabilities in the
balance sheet and the measurement of those instruments at fair value. The
accounting for changes in the fair value of a derivative depends on the planned
use of the derivative and the resulting designation.

   In December 1999, the Securities and Exchange Commission ("SEC") issued
Staff Accounting Bulletin No. 101, ("SAB 101") "Revenue Recognition in
Financial Statements," which provides guidance on the recognition, presentation
and disclosure of revenue in financial statements filed with the SEC. SAB 101
outlines the basic criteria that must be met to recognize revenue and provides
guidance for disclosures related to revenue recognition policies. The Company
has reviewed these criteria and believes its policies for revenue recognition
to be in accordance with SAB 101.

   In March 2000, the Financial Accounting Standards Board ("FASB") issued FASB
Interpretation No. 44 ("FIN 44"), "Accounting for Certain Transactions
Involving Stock Compensation--an interpretation of APB Opinion No. 25." FIN 44
clarifies the application of APB Opinion No. 25 and, among other issues
clarifies the following: the definition of an employee for purposes of applying
APB Opinion No. 25; the criteria for determining whether a plan qualifies as a
noncompensatory plan; the accounting consequence of various modifications to
the terms of the previously fixed stock options or awards; and the accounting
for an exchange of stock compensation awards in a business combination. FIN 44
is effective July 1, 2000, but certain conclusions in FIN 44 cover specific
events that occurred after either December 15, 1998 or January 12, 2000. The
adoption of FIN 44 did not have a material impact on the Company's financial
position or results of operations.

   Derivative Financial Instruments--Effective January 1, 2001, the Company
adopted SFAS No. 133, which requires that all derivative instruments be
reported on the balance sheet at fair value and establishes criteria for
designation and effectiveness of derivative transactions for which hedge
accounting is applied. Depending on the nature of the underlying exposure being
hedged, changes in the fair value of derivatives are recognized either in the
statement of operations (no hedge or fair value hedge) or other comprehensive
income (cash flow hedge). The ineffective portion of the change in fair value
of the derivative is recognized in earnings. The Company assesses the initial
and ongoing effectiveness of its hedging relationships in accordance with its
documented policies. There was no cumulative effect of adopting SFAS No. 133 as
of January 1, 2001 because the Company was not party to any derivatives as of
that date.

 Cash Flow Hedges

   During January 2001, the Company began utilizing foreign currency forward
contracts. The Company is exposed to market risk from changes in foreign
currency exchange rates associated with forecasted foreign currency-denominated
expenses. The Company uses foreign currency forward contracts designated as
cash flow hedges to hedge this exposure and the fair value changes of the
forward contracts related to the effective portion of the hedges are initially
recorded as a component of other comprehensive income. The Company utilizes
these foreign currency forward contracts to hedge its variability in U.S.
dollar cash flows associated with probable forecasted foreign inter-company
mark and Euro denominated expenses because the Company reimburses its German
subsidiary for such expenses. Unrealized and realized gains and losses on cash
flow hedges accumulate in other comprehensive income and are reclassified into
earnings in the periods in which earnings are impacted by the variability of
the cash flows of the hedged item. Gains and losses on derivatives that are
terminated prior to their maturity are also reclassified into earnings when the
underlying hedged items impact earnings, unless it is no longer probable that
the hedged forecasted transaction will occur, whereby such gains and losses are
recognized immediately in earnings. The Company hedges forecasted exposures up
to

                                      F-11


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

12 months in the future. For the three months ended March 31, 2001, hedge
ineffectiveness associated with instruments designated as cash flow hedges was
not significant. For the three months ended March 31, 2001, net losses of
approximately $78,000 were reclassified into earnings as an adjustment to
research and development expense. These net losses were offset by gains and
losses on the transactions being hedged. Approximately $225,000 of net
derivative gains/losses included in other comprehensive income at March 31,
2001 will be reclassified into earnings within twelve months from that date.
The unrealized amounts in other comprehensive income will fluctuate based on
changes in fair value of open contracts at each reporting period. At March 31,
2001, the Company's liability of approximately $370,000 relating to these
forward contracts is included in accrued expenses in the accompanying
consolidated balance sheet.

   Reclassifications--Certain prior year amounts have been reclassified in
order to conform with the current year presentation.

3. INVENTORIES

   Inventories consisted of the following:



                                                   December 31,
                                              ----------------------  March 31,
                                                 1999       2000        2001
                                              ---------- ----------- -----------
                                                            
   Finished goods............................ $  450,205 $ 2,735,721 $ 4,902,346
   Work-in-progress..........................  1,900,866   5,992,908   3,189,791
   Raw materials.............................  2,651,209   8,535,626   7,544,036
                                              ---------- ----------- -----------
     Total................................... $5,002,280 $17,264,255 $15,636,173
                                              ========== =========== ===========


   During the three months ended March 31, 2001, the Company recorded a charge
of approximately $4,900,000 to reduce inventories to their net realizable
value. Approximately $4,300,000 of this charge resulted primarily from order
cancellations as customers are transitioning from certain Gallium Arsenide
products to Silicon Germanium products.

4. PROPERTY AND EQUIPMENT

   Property and equipment consisted of the following:



                                   Estimated            December 31,
                                  Useful Life      -----------------------   March 31,
                                    (Years)           1999        2000         2001
                             --------------------- ----------  -----------  -----------
                                                                
   Machinery and
    equipment..............            5           $2,920,192  $13,043,077  $16,640,451
   Furniture and fixtures..            3               58,996    1,298,003    1,680,986
   Leasehold improvements    shorter of asset life
    .......................      or lease term        107,451      462,792      472,731
   Software................           2-5                 --     5,485,938    6,539,447
   Construction in
    progress...............                               --       497,836      554,980
                                                   ----------  -----------  -----------
     Total.................                         3,086,639   20,787,646   25,888,595
   Accumulated depreciation
    and amortization.......                          (418,762)  (3,022,949)  (4,825,158)
                                                   ----------  -----------  -----------
   Property and equipment,
    net....................                        $2,667,877  $17,764,697  $21,063,437
                                                   ==========  ===========  ===========


                                      F-12


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)


   Property leased under capital leases (which is included in property and
equipment in the accompanying balance sheets) consists of the following:



                                               December 31,
                                           ----------------------   March 31,
                                              1999        2000        2001
                                           ----------  ----------  -----------
                                                          
   Machinery and equipment................ $2,091,805  $2,091,805  $ 2,091,805
   Accumulated amortization...............   (177,498)   (859,894)  (1,034,211)
                                           ----------  ----------  -----------
     Total................................ $1,914,307  $1,231,911  $ 1,057,594
                                           ==========  ==========  ===========


5. LINE OF CREDIT FROM SHAREHOLDER

   The Company had a line of credit facility from a shareholder that provided
for borrowings up to $2,000,000. The credit facility was provided to the
Company pursuant to a Share Purchase Agreement executed in 1997 (see Note 6).
In connection with the Share Purchase Agreement, the Company's then existing
shareholders granted to the party providing the credit facility a share
purchase option, which expired on October 31, 1998. The fair value of the
option was estimated at $119,000 and was reflected as a discount on borrowings
under the line of credit agreement and an increase in additional paid-in
capital. The discount was amortized to interest expense on a straight-line
basis over the 16-month option period (through October 31, 1998). The fair
value of the option of approximately $119,000 was determined as the present
value of the difference between expected future cash flows under the credit
facility using the 6.0% interest rate implicit in
the credit facility, compared to that using a 10.5% estimated market rate of
interest. Outstanding borrowings under the credit facility accrued interest at
6.0%, compounded semiannually, through expiration of the share purchase option
on October 31, 1998, upon which date the interest rate converted to a certain
bank's prime rate plus 2.0% (10.5 percent). Outstanding unpaid interest (which
amounted to $161,398 and $387,962 as of December 31, 1998 and 1999,
respectively) was due on October 31, 2002. Borrowings under the credit facility
were not guaranteed or collateralized. In connection with the Series B
convertible preferred stock offering discussed in Note 6, $2,449,168 of
principal and interest outstanding under this credit facility as of such
offering was forgiven by the shareholder as partial payment for the
shareholder's Series B convertible preferred stock.

6. CAPITALIZATION

   Preferred Stock Financing--In May 2000, the Company completed a 1,000,000
share, Series B convertible preferred stock offering for $40 per share, or
gross proceeds of $40,000,000. The Series B preferred stock has rights and
privileges substantially similar to the Series A preferred stock (discussed
below), except with respect to voting rights prior to an initial public
offering. Series B convertible preferred stock will automatically convert into
ten shares of common stock upon the closing of a qualified initial public
offering, as defined. In conjunction with this offering, the Company issued
2,500,000 warrants exercisable at $4 per share to Series A preferred
shareholders. Such grant was made in accordance with the original terms of the
preferred stock investors' rights agreement and the value of the warrants at
the date of grant ($6,375,000), as determined by an independent appraisal, has
been treated as a dividend.

   Capital Reorganization--Effective February 26, 1999, the Board of Directors
amended the Company's articles of incorporation to reorganize its capital
structure by authorizing three classes of stock designated, respectively, as
"Class A common stock," "Class B common stock" and "preferred stock." Under the
amended articles, the total number of shares of stock the Company is authorized
to issue is 310,000,000 shares. 200,000,000 shares are Class A common stock,
par value $.0001 per share; 100,000,000 shares are Class B common stock, par
value $.0001 per share; and ten million shares are preferred stock, par value
$.0001 per share.

                                      F-13


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)


   Upon the adoption of the restated articles of incorporation, each
outstanding share of common stock (15,000 shares, par value $1 per share) was
converted into 2,000 shares of Class B common stock. The accompanying
consolidated financial statements have been adjusted to give effect for the
capital reorganization and conversion for all periods presented.

   Each share of Class A common stock entitles the holder to one vote on all
matters submitted to a vote of the shareholders of the corporation. Each share
of Class B common stock entitles the holder to 10 votes on all matters
submitted to a vote of the shareholders of the corporation. Subject to the
preferences that may be applicable to preferred stock outstanding at the time,
upon liquidation, dissolution, or winding up of the corporation, all of the
remaining assets of the Company to be distributed will be distributed ratably
to the holders of Class A and B common stock in proportion to the amount of
stock owned by each holder.

   Redeemable Convertible Preferred Stock--In June 1999, the Company issued
1,711,640 shares of Series A redeemable convertible preferred stock to an
institutional investor for $9 per share, or proceeds of $14,930,615, net of
$474,145 in offering costs. Significant terms of the Series A redeemable
convertible preferred stock are as follows:

  .  At the option of the holder, each share of Series A redeemable
     convertible preferred stock is convertible at any time into ten shares
     of Class A common stock, subject to certain dilutive issuances. As of
     December 31, 2000, no such dilutive issuances had occurred. Shares
     automatically convert into Class A common stock upon the earlier of (a)
     completion of an initial public offering of the Company's common stock
     yielding gross proceeds to the Company in excess of $15,000,000 and at a
     price per share not less than $1.50 (as adjusted for any stock
     dividends, splits or similar capital modifications), and (b) the
     election by holders of at least a majority of the then outstanding
     shares of Series A redeemable convertible preferred stock.

  .  Series A preferred shareholders are entitled to annual non-cumulative
     cash dividends when and if declared by the Company's Board of Directors.
     Dividends shall be paid to the holders of the Series A preferred stock
     prior to any cash dividends being paid to the holders of common stock.

  .  In the event of any liquidation of the Company, the holders of Series A
     preferred stock have a liquidation preference over common stock of $9
     per share, which is presently equal to the aggregate amount of
     $15,404,760, plus declared and unpaid dividends, if any.

  .  Holders of the Series A preferred stock are entitled to the number of
     votes equal to the number of Class A common stock into which each share
     is convertible.

  .  The Series A preferred stock is mandatorily redeemable upon the election
     of at least a majority of the holders of the then outstanding shares of
     Series A preferred stock beginning in March 2005. The aggregate
     redemption amount of $15,404,760, or $9 per share, plus declared but
     unpaid dividends, is payable in cash by the Company in three equal
     annual installments. Redeemable preferred stock is stated at the
     redemption amount and issuance costs are netted against the proceeds and
     accreted as a charge against additional paid-in capital over the
     expected life of the redeemable preferred stock.

   The Company initially records redeemable securities at their fair value.
Such security is accreted each period to the ultimate contractual redemption
amount on a straight-line basis, which approximates the interest method.

   Share Purchase Agreement--On June 17, 1997, the Company, the Company's
shareholders, and a third party executed a Share Purchase Agreement whereby the
third party purchased 5,700,000 shares of the Company's Class A common stock
from the shareholders for $1,000,000. In addition, the shareholders granted

                                      F-14


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

the third party an exclusive option to purchase all remaining outstanding
capital stock of the Company for $5,000,000. The unexercised option expired on
October 31, 1998. In connection with the Share Purchase Agreement, the third
party extended a $2,000,000 line-of-credit facility to the Company (see Note
5). The Share Purchase Agreement required the Company to execute a Supply
Agreement with the third party (see Note 8).

7. STOCK OPTIONS AND WARRANTS

Stock Options

   As of December 31, 2000, the Company has two stock option plans (the "1998
Plan" and the "1999 Plan", collectively referred to as the "Plans") under which
employees, consultants, and directors may be granted options to purchase common
stock up to an aggregate of 42,000,000 shares. Generally, options vest under
the straight-line basis over periods of four or five years and expire 10 years
from the grant date. When the exercise price of employee stock options issued
under the Plans equals the fair value of the underlying stock, no compensation
expense is recorded. Compensation expense is recognized for the fair value of
options granted to non-employees and to the extent the fair value of the
underlying stock exceeds the exercise price of employee stock options. During
1998, 1999 and 2000, the Company issued employee common stock options with
exercise prices less than the fair value of the underlying common stock. The
weighted-average fair value of the common stock, based on factors including the
performance of the Company and equity security transactions entered into by the
Company with certain third parties was $.20, $.667 and $4.07 per share in 1998,
1999 and 2000, respectively. Accordingly, the Company recorded $499,500,
$6,032,701 and $14,145,631 of the intrinsic value of such options as deferred
stock compensation in 1998, 1999 and 2000, respectively. Deferred stock
compensation of $343,870, $822,582 and $6,910,225 was amortized to expense
during the years ended 1998, 1999 and 2000, respectively. At December 31, 2000,
$12,601,155 of stock compensation is deferred as a component of shareholders'
deficit and will be amortized to expense through 2004 as earned by the related
employees.

   A summary of the option transactions under the Plans follows:



                                                       Weighted-
                                                        Average
                                           Number of   Exercise     Range of
                                             Shares      Price   Exercise Prices
                                           ----------  --------- ---------------
                                                        
   Granted during 1998....................  2,700,000   $0.015   $0.008--$0.025
                                           ----------
   Outstanding, December 31, 1998.........  2,700,000   $0.015   $0.008--$0.025
   Granted................................ 22,011,250   $0.393    $0.20--$0.707
   Cancelled.............................. (2,000,000)  $0.200        $0.20
                                           ----------
   Outstanding, December 31, 1999......... 22,711,250   $0.365   $0.008--$0.707
   Granted................................ 14,205,200   $3.060    $0.71--$5.75
   Exercised..............................    (48,750)  $0.400    $0.30--$0.55
   Cancelled..............................   (509,250)  $0.975    $0.30--$5.75
                                           ----------
   Outstanding, December 31, 2000......... 36,358,450   $1.405   $0.008--$5.75
   Granted................................  3,616,500   $5.75         $5.75
   Exercised..............................    (58,333)  $5.75         $5.75
   Cancelled..............................   (287,620)  $3.52     $1.35--$5.75
                                           ----------
   Outstanding, March 31, 2001............ 39,628,997   $1.77    $0.008--$5.75
                                           ==========


   As of December 31, 2000 there were 5,641,550 shares available for future
grant under the plan.

                                      F-15


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)


   Additional information regarding options outstanding as of December 31, 2000
is as follows:



                         Outstanding Options              Exercisable Options
                   -------------------------------- -------------------------------
                                         Weighted-                       Weighted-
                                          Average                         Average
                              Weighted-  Remaining            Weighted-  Remaining
      Range of       Number    Average  Contractual  Number    Average  Contractual
      Exercise         of     Exercise     Life        of     Exercise     Life
       Prices        Shares     Price     (Years)    Shares     Price     (Years)
   --------------  ---------- --------- ----------- --------- --------- -----------
                                                      
   $0.008--$0.025   2,700,000  $0.016       7.7     2,700,000  $0.016       7.7
    $0.20--$0.30    8,461,250  $0.205       8.1     2,419,515  $0.205       8.1
    $0.55--$0.71   11,900,000  $0.578       8.8     2,815,000  $0.569       8.8
    $1.35--$2.50    7,468,500  $ 1.82       9.4       149,990  $ 1.73       9.5
    $3.90--$5.75    5,828,700  $ 4.94       9.8       147,969  $ 4.64       9.8
                   ----------                       ---------
                   36,358,450  $1.405       8.8     8,232,474  $0.338       8.2
                   ==========                       =========


   Subsequent to March 31, 2001, the Company granted 2,582,000 stock options to
employees with a weighted average exercise price of $6.47. In connection with
these grants, the Company recorded $3,961,125 of deferred stock compensation
that will be amortized to expense over a four year period that is consistent
with the vesting schedule of such options.

   As permitted under SFAS No. 123, the Company has elected to follow APB
Opinion No. 25 and related interpretations in accounting for stock-based awards
to employees. Pro-forma information regarding net income is required by SFAS
No. 123. This information is required to be determined as if the Company had
accounted for its stock-based awards to employees under the fair value method
of that statement. The fair value of options granted during the years ended
December 31, 1998, 1999 and 2000, as reported below has been estimated at the
date of grant using the minimum value option pricing model with the following
assumptions:



                                                                Year Ended
                                                                December 31,
                                                               ----------------
                                                               1998  1999  2000
                                                               ----  ----  ----
                                                                  
   Risk-free interest rate.................................... 5.9%  6.8%  6.3%
   Dividend yield.............................................  --    --    --
   Expected life (years)......................................   7     7   6.5
   Volatility.................................................  --    --     65%


   The weighted-average estimated fair value of employee stock options granted
during the years ended December 31, 1998, 1999 and 2000 was $0.191, $0.417 and
$2.41 per share, respectively. The weighted-average estimated fair value of
employee stock options granted during the three months ended March 31, 2001 was
$3.07.

   For purposes of pro-forma disclosures, the estimated fair value of the
options is amortized to expense over the options' vesting period. The Company's
pro-forma information is as follows:



                                              Year Ended December 31,
                                         ------------------------------------
                                            1998        1999         2000
                                         -----------  ---------  ------------
                                                        
   Net loss attributable to common
    shareholders:
     As reported........................ $(1,487,638) $ (23,008) $(10,139,385)
     Pro forma.......................... $(1,493,665) $(574,035) $(14,445,586)
   Net loss per share attributable to
    common shareholders:
       As reported: Basic and diluted... $     (0.05) $    0.00  $      (0.34)
       Pro forma: Basic and diluted..... $     (0.05) $   (0.02) $      (0.48)


   The effects on pro-forma disclosures of applying SFAS No. 123 are not likely
to be representative of the effects on pro-forma disclosures of future years.


                                      F-16


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

Warrants

   In May 2000, the Company executed a Semiconductor Development Agreement (the
"Agreement") with a third party, which provides the Company with access to one
or more of the third party's semiconductor fabrication processes solely for the
development of product prototypes. Upon the execution of the Agreement, the
Company granted the third party a fully exercisable warrant to purchase (a)
250,000 shares of Series B preferred stock for $40 per share from the grant
date through the date of the closing of an initial public offering of the
Company's common stock yielding not less than $10 million, net of underwriting
discounts and commissions (a "Qualified Public Offering"), or (b) 2,500,000
shares of Class A common stock, from the date, if any, of a Qualified Public
Offering, through May 2005 for $4 per share. Neither the Agreement nor the
terms of the warrant requires the third party to meet any performance
requirements or prohibit the third party from participating in other similar
programs with other parties. As such, the warrant is not subject to any
forfeiture for any reason. The Company has measured the value of the warrant at
the date of grant at $6,375,000, by utilizing an independent appraisal.

   The Company has expensed the value of this fully exercisable, nonforfeitable
warrant as a research and development expense in the accompanying 2000
statement of operations, since there is no third party performance required
with respect to the warrant and the activities underlying the Agreement relate
to research and development efforts for which the Company cannot determine the
benefit, if any, which may result.

   Also during 2000, the Company granted 133,406 Class A common stock purchase
warrants to certain third parties in exchange for legal and employee recruiting
services. Each warrant was fully vested and exercisable on the grant date for
one share of Class A common stock and will expire five years from the grant
date. The weighted average exercise price of these warrants was $2.01. The fair
value of the warrants was estimated at $169,256 using the Black-Scholes option-
pricing model and is reflected as a general and administrative expense in the
consolidated statement of operations and an increase to additional paid-in
capital.

   In June 1999, the Company granted 516,670 Class A common stock purchase
warrants to certain third parties in exchange for their services rendered in
connection with the Series A preferred stock financing (see Note 6). The
warrants were fully vested and exercisable on the grant date for $0.30 per
option share into one share of Class A common stock and expire five years from
the grant date (June 2004). The fair value of the warrants was estimated at
$330,549 using the Black-Scholes option-pricing model and was reflected as a
reduction in the proceeds from issuance of the Series A preferred stock and an
increase in additional paid-in capital.

   In September 1999, the Company granted 163,640 Class A common stock purchase
warrants to secure a capital equipment lease with a bank (see Note 8). The
warrants were fully vested and exercisable on the grant date for $0.55 per
option share into one share of Class A common stock and expire five years from
the grant date (September 2004). The fair value of this warrant was estimated
at $130,636 using the Black-Scholes option-pricing model and was reflected as
an increase in deferred financing fees, which are included in deposits and
other assets on the accompanying balance sheet, and an increase in additional
paid-in capital. The deferred financing fees are being amortized to other
expense on a straight-line basis over the three year term of the lease.

   At December 31, 2000, there are 5,000,000 Series B convertible preferred
stock purchase warrants and 813,716 Class A common stock purchase warrants
outstanding. During 2000, 5,133,406 of these warrants were granted with a
weighted average exercise price and weighted average fair value of $3.95 and
$2.52, respectively.


                                      F-17


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

8. COMMITMENTS AND CONTINGENCIES

   Operating Leases--The Company leases its office facilities and certain
equipment under operating lease agreements expiring at various dates through
2007 and thereafter.


                                                                  
   2001............................................................. $ 4,697,839
   2002.............................................................   3,611,277
   2003.............................................................   2,748,374
   2004.............................................................   2,411,462
   2005.............................................................   2,158,778
   Thereafter.......................................................     406,904
                                                                     -----------
                                                                     $16,034,634
                                                                     ===========


   Rental expense under operating leases was $264,549, $509,451 and $2,364,575
for the years ended December 31, 1998, 1999 and 2000.

   Capital Leases--The Company leases certain equipment under capital leases.
The following is a schedule of future minimum lease payments under the leases
together with the present value of the net minimum lease payments as of
December 31, 2000 and the fiscal years thereafter:


                                                                  
   2001............................................................. $  723,231
   2002.............................................................    777,581
   2003.............................................................     41,496
                                                                     ----------
   Total minimum lease payments.....................................  1,542,308
   Less amount representing interest................................    133,217
                                                                     ----------
   Present value of minimum lease payments..........................  1,409,091
   Less current portion of capital lease obligation.................    636,043
                                                                     ----------
   Long-term portion of capital lease obligation.................... $  773,048
                                                                     ==========


   Software and Equipment Financing--During 2000, the Company obtained vendor
financing for software and equipment purchases in the amount of $2,664,860. The
Company imputed interest on these borrowings at 8.0% per annum. The financings
mature as follows; 2001, $684,854; 2002, $225,776; and 2003, $19,290.

   Supply Agreement--The Company purchases silicon wafer material and
engineering services from a shareholder under the terms of a Supply Agreement,
which was executed during 1997 (and amended in 1999) in connection with a Share
Purchase Agreement with the shareholder (see Note 6). Under the terms of the
Supply Agreement, as amended, which expires in December 2002, the Company is
obligated to purchase certain minimum quantities of wafer material at various
fixed prices. The minimum quantity purchase requirements in 2000, 2001, and
2002 are equal to the greater of the 1998 minimum purchase quantity
($1,200,000) or the actual quantity purchased in the immediately preceding
year. The Company has met all such commitments as of December 31, 1999 and 2000
and anticipates exceeding the minimum purchase quantities under the Supply
Agreement. The Company purchased approximately $1,059,000, $4,438,000 and
$9,781,000 of materials and engineering services from the shareholder during
the years ended December 31, 1998, 1999 and 2000, respectively.

   Legal--The Company, in the ordinary course of its business, is the subject
of, or party to, various pending or threatened legal actions. The Company
believes that an ultimate liability arising from these actions will not have a
material adverse effect on its financial position or results of operations.

                                      F-18


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)


   In May 2001, counsel to an employee/shareholder wrote a letter to the
Company in which he claimed that the Company's chief executive officer and
executive vice president breached an oral promise made by them to him on behalf
of the Company relating to awards of stock options and certain salary
arrangements. In his letter, the employee/shareholder has indicated that he
will not pursue this matter if the Company pays him approximately $1.0 million
in cash and if the named executives transfer options that they have to purchase
an aggregate of one million shares of Class A common stock. No further claims
were made in this letter.

   In June 2001, the Company received another letter from the
employee/shareholder's counsel asserting that the Company's filings with the
Securities and Exchange Commission were misleading because they
mischaracterized his claims. The letter states that the Company's filings
understate the gravity of his claims, but it does not specify damages or make
an additional demand for compensation. The letter states that the
employee/shareholder's claims are significant and form the basis for a claim of
breach of fiduciary duty by the above mentioned executives and, in particular,
that such executives misused their power to reward themselves and engaged in a
scheme to oust him from the Company. The letter further alleges defamation and
discrimination. The Company subsequently received another letter from the
employee/shareholder's counsel stating that his proposed settlement offer
consists of a $1.0 million cash payment and the transfer of one million shares
of common stock by the Company, an exemption from the 180 day lock-up period
and the registration of his shares.

   While the Company believes the allegations set forth in the
employee/shareholder's correspondence to it are without merit, it cannot
predict the ultimate outcome of any litigation, should it be initiated.

9. INCOME TAXES

   The provision (benefit) for income taxes consists of the following:



                                                       December 31,
                                              ---------------------------------
                                                1998       1999        2000
                                              ---------  ---------  -----------
                                                           
   Current:
     State................................... $     800  $   1,553  $   846,782
     Federal.................................       --      17,665    2,808,239
     Foreign.................................       --         --       324,642
                                              ---------  ---------  -----------
       Total current.........................       800     19,218    3,979,663
                                              ---------  ---------  -----------
   Deferred benefit..........................  (575,872)  (350,661)  (7,020,917)
   Valuation allowance.......................   575,872    350,661    1,292,836
                                              ---------  ---------  -----------
   Total..................................... $     800  $  19,218  $(1,748,418)
                                              =========  =========  ===========


   The effective income tax rate differs from the federal statutory income tax
rate applied to loss before income taxes due to the following:



                               Year Ended December 31,
                               ----------------------------
                                1998       1999      2000
                               -------   --------   -------
                                           
   Federal statutory income
    tax rate.................    (35.0)%     35.0 %   (35.0)%
   State taxes net of Federal
    benefit..................      --         --       (8.6)
   Meals and entertainment...      0.1       17.2       0.4
   Foreign income............     (0.8)     (26.1)     (4.0)
   Research and development
    tax credits..............     (4.0)    (342.8)     (3.8)
   Valuation allowance.......     42.7      363.7      24.5
   Other.....................     (2.9)      (3.1)     (5.5)
                               -------   --------   -------
     Total...................      0.1 %     43.9 %   (32.0)%
                               =======   ========   =======


                                      F-19


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)


   The components of net deferred income taxes consist of the following:



                                                    December 31,
                                          -----------------------------------
                                            1998        1999         2000
                                          ---------  -----------  -----------
                                                         
   Current deferred income tax assets:
     Accounts receivable allowances...... $   4,893  $    21,608  $    56,167
     Accrued expenses....................    50,006       77,618      302,284
     Inventory...........................    31,708      194,273    1,471,600
     Warrant expense.....................       --           --     2,772,655
     Valuation allowance.................   (86,607)    (293,499)  (1,448,098)
                                          ---------  -----------  -----------
       Total current deferred income tax
        assets...........................       --           --     3,154,608
                                          ---------  -----------  -----------
   Non-current deferred income tax
    assets:
     Net operating loss carryforwards....   630,728      191,563          --
     Tax credit carryforwards............       --       446,598          --
     Depreciation........................    94,169       30,891      472,066
     Deferred stock compensation.........   148,896      348,510    3,238,757
     Other...............................       --           --        18,449
     Valuation allowance.................  (873,793)  (1,017,562)  (1,155,799)
                                          ---------  -----------  -----------
       Total non-current deferred income
        tax assets.......................       --           --     2,573,473
                                          ---------  -----------  -----------
   Net deferred income tax assets........ $     --   $       --   $ 5,728,081
                                          =========  ===========  ===========


   The Company utilized its NOL carryforwards and tax credit carryforwards
during 2000. The current deferred tax asset at December 31, 2000 is included in
prepaid expenses and other current assets in the consolidated balance sheet. At
each period end, the Company assesses the recoverability of its deferred tax
assets by reviewing a number of factors including operating trends, future
projections and taxable income, to determine whether a valuation allowance is
required to reduce such deferred tax assets to an amount that is more likely
than not to be realized. At December 31, 2000 the Company has reviewed its
deferred tax assets and believes that the valuation allowance reduces such
assets to an amount that is more likely than not to be realized.

10. EMPLOYEE BENEFIT PLAN

   Effective September 1, 1998, the Company established a 401(k) defined
contribution plan, in which all of its U.S. employees may participate. Plan
participants contribute up to 15% of their eligible compensation to the plan,
subject to the statutorily prescribed annual limit. The Company intends the
plan to qualify under Section 401(k) of the Internal Revenue Code so that
contributions by employees to the plan, and income earned, if any, on plan
contributions, are not taxable to employees until withdrawn from the plan. From
the plan's inception through March 31, 2000, the Company made matching
contributions on behalf of the plan participants at the rate of 25% of
participant contributions up to 6% of compensation. The plan was amended on
April 1, 2000 for a change in the matching contribution rate to 50% of
participant contributions up to 6% of compensation. During 1998, 1999 and 2000,
the Company made matching contributions of $4,306, $21,632 and $167,214,
respectively.

11. RELATED PARTY TRANSACTIONS

   The Company purchases certain products from certain of its equity holders.
For the years ended December 31, 1998, 1999, 2000 and for the three months
ended March 31, 2000 and 2001, purchases from such parties have been
approximately $1,059,000, $4,438,000, $10,748,000, $2,826,000 and $4,965,000,

                                      F-20


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

respectively. At December 31, 1999 and 2000 and at March 31, 2001, accounts
payable to these parties were approximately $714,000, $1,244,000 and
$2,409,000, respectively.

   During April 2001, the Company guaranteed a lease for ASIP, Inc. ("ASIP")
(See Note 13). The guarantee is through December 31, 2005 provided that ASIP
continues to meet all terms and conditions of the lease. The total lease
payments to be made by ASIP during the guarantee period are approximately
$1,500,000.

   One of the Company's directors, is a founder and director of ASIP.
Additionally, the Company's President and Chief Executive Officer, and two of
its directors, are each directors of ASIP.

   In May 2001, the Company entered into a development and license agreement
with ASIP, pursuant to which ASIP will design, develop and prototype certain
optical components, and the Company will reimburse ASIP a maximum of $2,500,000
of its development expenses and consign up to $3,500,000 of equipment to ASIP,
which ASIP will later have the option to purchase at its then-depreciated
value. The agreement also provides that the Company will enter into a supply
agreement with ASIP upon ASIP's successful completion and delivery of the
component prototypes.

12. GEOGRAPHIC INFORMATION

   Revenues to geographic locations are as follows:



                                                          Three Months Ended
                                                               March 31,
                                                        -----------------------
                        1998       1999        2000        2000        2001
                     ---------- ----------- ----------- ----------- -----------
                                                     
   North America.... $3,350,841 $17,154,130 $53,260,280 $ 8,506,862 $18,361,540
   Europe...........    486,840   3,179,033  19,355,407   3,744,669  12,661,400
   Asia.............     13,883      61,839     104,818      96,061      44,986
                     ---------- ----------- ----------- ----------- -----------
     Total.......... $3,851,564 $20,395,002 $72,720,505 $12,347,592 $31,067,926
                     ========== =========== =========== =========== ===========

   Revenues to certain geographic locations within Europe are as follows:

   Italy............ $        * $ 1,065,485 $ 7,750,734 $ 1,545,000 $ 3,117,500
                     ========== =========== =========== =========== ===========
   France........... $        * $ 1,372,425 $ 9,129,230 $ 1,821,727 $ 7,977,150
                     ========== =========== =========== =========== ===========
   Germany.......... $  451,382 $         * $         * $         * $         *
                     ========== =========== =========== =========== ===========


*  Country's revenues represents less than 10% of total revenue in the
   respective period.

   Substantially all identifiable assets are located in North America.

13. INVESTMENTS AT COST

   In July 2000, the Company entered into a stock purchase and option agreement
with ASIP, Inc ("ASIP") an optical device start-up entity, pursuant to which
the Company purchased 1,666,667 shares of ASIP's Series A voting and
convertible preferred stock at an aggregate purchase price of $833,334 which
represents approximately 18% of ASIP's outstanding voting stock. The Company
was also granted an option to purchase, and the Company granted ASIP an option
to require the Company to purchase upon the attainment of certain performance
goals, 833,333 shares of ASIP's Series B voting and convertible preferred stock
at an aggregate purchase price of $1,666,666. In conjunction with this
purchase, the Company received this option for no

                                      F-21


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

additional cost. Accordingly, such option is being carried at its historical
cost since ASIP is not a public entity. The other investors in these
transactions are also investors in the Company.

   During January 2001, the Company exercised its option and purchased 833,333
shares of Series B voting and convertible preferred stock for $1,666,666. After
this additional purchase, the Company owns approximately 21% of ASIP's
outstanding voting stock and began accounting for this investment under the
equity method of accounting. ASIP's 2000 results of operations were not
material.

   In October 2000, the Company entered into a stock purchase agreement with
Internet Machines Corporation ("Internet Machines"), a privately-held optical
device company, pursuant to which it purchased 320,671 shares of Internet
Machines Series B voting and convertible preferred stock at an aggregate
purchase price of $1,555,254. The Company's purchase represents less than 1% of
Internet Machines outstanding voting stock. The Company's President and Chief
Executive Officer, and one of its directors, are each directors of Internet
Machines.

   The above investments are included in other assets in the accompanying
consolidated balance sheet.

14. SUPPLEMENTAL SCHEDULE OF NONCASH TRANSACTIONS

   During the three months ended March 31, 2001 the Company financed the
acquisition of equipment or software in the amount of $891,472.

   During 2000, the Company granted 2,500,000 Series B convertible preferred
stock purchase warrants and 133,406 Class A common stock purchase warrants. The
fair value of the warrants was estimated at $6,544,256 and is reflected as a
warrant issuance expense (see Note 7).

   During 1997, the Company issued a common stock purchase option to a
shareholder in connection with obtaining a line of credit from a shareholder
(see Note 5).

   During 1998, 1999 and 2000 the Company financed the acquisition of equipment
or software in the amounts of $58,011, $2,033,794 and $2,664,860, respectively.

   During 1999, the Company granted Class A common stock purchase warrants to
certain third parties in exchange for their services rendered in connection
with the Series A preferred stock financing. The fair value of the warrants was
estimated at $330,549 and was reflected as a reduction in the proceeds from
issuance of the Series A preferred stock and a credit to additional paid-in
capital (see Note 7).

   During 1999, the Company granted Class A common stock purchase warrants to
secure equipment financing with a bank. The fair value of the warrants was
estimated at $130,636 and was reflected as a financing charge on the
accompanying consolidated statement of operations in 1999 and a credit to
additional paid-in capital (see Note 7).

15. RESTATEMENT

   Subsequent to the issuance of the Company's financial statements for the
year ended December 31, 2000 and for the three months ended March 31, 2001,
Company management determined that the estimated fair value of the Company's
common stock used to measure compensation expense for certain employee stock
option grants should be revised. The estimated fair value of the Company's
common stock for the period from September 27, 2000 through November 27, 2000
has been revised to be consistent with possible offering price ranges of the
Class A Common stock discussed with the Company's underwriters during that
period. As a

                                      F-22


               MULTILINK TECHNOLOGY CORPORATION AND SUBSIDIARIES

            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
  (Notes referencing the periods ended March 31, 2000 and 2001 are unaudited)

result, the financial statements for the year ended December 31, 2000 and the
three months ended March 31, 2001 have been restated from the amounts
previously reported to properly record compensation expense for employee stock
option grants.

   A summary of the significant effects on the financial statements for 2000
and for the three months ended March 31, 2001, of the restatement are as
follows:

CONSOLIDATED BALANCE SHEETS



                                                        As of March 31, 2001
                           As of December 31, 2000           (unaudited)
                          --------------------------  --------------------------
                               As                          As
                           previously                  previously
                            reported    As restated     reported    As restated
                          ------------  ------------  ------------  ------------
                                                        
Deferred income taxes...  $  2,517,852  $  2,573,473  $  3,444,888  $  3,581,294
Deferred stock
 compensation...........   (11,174,023)  (12,601,155)  (14,403,608)  (15,623,600)
Additional paid-in-
 capital................    32,592,406    34,162,156    39,058,173    40,627,923
Accumulated deficit.....   (12,400,375)  (12,487,372)  (16,725,416)  (16,938,768)

CONSOLIDATED STATEMENTS OF OPERATIONS


                                                        For the three months
                             For the year ended         ended March 31, 2001
                              December 31, 2000              (unaudited)
                          --------------------------  --------------------------
                               As                          As
                           previously                  previously
                            reported    As restated     reported    As restated
                          ------------  ------------  ------------  ------------
                                                        
Cost of revenues
  Deferred stock
   compensation.........  $    817,708  $    834,093  $    455,064  $    476,544
Operating Expenses
  Deferred stock
   compensation.........     5,949,899     6,076,132     2,395,318     2,580,978
Operating loss..........    (6,835,472)   (6,978,090)   (7,035,342)   (7,242,482)
Loss before provision
 (benefit) for income
 taxes..................    (5,275,089)   (5,417,707)   (6,920,066)   (7,127,206)
Benefit for income
 taxes..................    (1,692,797)   (1,748,418)   (2,595,025)   (2,675,810)
Net loss................    (3,582,292)   (3,669,289)   (4,325,041)   (4,451,396)
Net loss attributable to
 common shareholders....   (10,052,388)  (10,139,385)   (4,348,815)   (4,475,170)
Net loss per share:
  Basic.................         (0.34)        (0.34)        (0.14)        (0.15)
  Diluted...............         (0.34)        (0.34)        (0.14)        (0.15)

   The composition of the amortization of deferred stock compensation is as
follows:
Research and
 development............  $  2,745,188  $  2,824,406  $  1,286,340  $  1,381,342
Sales and marketing.....       524,163       536,526       398,422       422,302
General and
 administrative.........     2,680,548     2,715,200       710,556       777,334
                          ------------  ------------  ------------  ------------
  Total.................  $  5,949,899  $  6,076,132  $  2,395,318  $  2,580,978
                          ============  ============  ============  ============



                                     ******

                                      F-23





                    [MULTILINK TECHNOLOGY CORPORATION LOGO]