Filed by Bookham Technology plc
                           pursuant to Rule 425 under the Securities Act of 1933
                                                Subject Company: New Focus, Inc.
                                                 Commission File No.: 333-109904


This filing relates to a proposed merger (the "Merger") between Bookham
Technology plc ("Bookham") and New Focus, Inc. ("New Focus") pursuant to the
terms of an Agreement and Plan of Merger, dated as of September 21, 2003 (the
"Merger Agreement"), by and among Bookham, Budapest Acquisition Corp. and New
Focus.

On January 15, 2004, Bookham made the following announcement:

FOR IMMEDIATE RELEASE

15 January 2004

BOOKHAM TECHNOLOGY PLC



                     PROPOSED ACQUISITION OF NEW FOCUS, INC.

In connection with the proposed acquisition of New Focus, Inc. by Bookham
Technology plc ("Bookham"), Amendment No. 3 to Registration Statement on Form
F-4 has been filed by Bookham with the Securities and Exchange Commission in
Washington, DC.

Copies of this Registration Statement will be available on the SEC website at
www.sec.gov/edgar.shtml under Bookham's company filings.





IMPORTANT ADDITIONAL INFORMATION WILL BE FILED WITH THE SECURITIES AND EXCHANGE
COMMISSION

         Bookham has filed with the SEC a Registration Statement on Form F-4 in
connection with the transaction and Bookham and New Focus have filed with the
SEC and plan to mail to the stockholders of New Focus, a Joint Proxy
Statement/Prospectus in connection with the transaction. The Registration
Statement and the Joint Proxy Statement/Prospectus contain important information
about Bookham, New Focus, the transaction and related matters. Investors and
security holders are urged to read the Registration Statement and the Joint
Proxy Statement/Prospectus carefully.

         Investors and security holders are able to obtain free copies of the
Registration Statement and the Joint Proxy Statement/Prospectus and other
documents filed with the SEC by Bookham and New Focus through the web site
maintained by the SEC at http://www.sec.gov.

         In addition, investors and security holders are able to obtain free
copies of the Registration Statement and the Joint Proxy Statement/Prospectus
from Bookham by contacting Investor Relations on +44 (0) 1235 837000 or from New
Focus by contacting the Investor Relations Department at +1 408 919 2736.

         Bookham and New Focus, and their respective directors and executive
officers, may be deemed to be participants in the solicitation of proxies in
respect of the transactions contemplated by the merger agreement. Information
regarding Bookham's directors and executive officers is contained in Bookham's
Annual Report on Form 20-F for the year ended December 31, 2002, as amended,
which is filed with the SEC. As of September 1, 2003, Bookham's directors and
executive officers beneficially owned approximately 33,806,421 shares (including
shares underlying options exercisable within 60 days), or 15.92%, of Bookham's
ordinary shares. Information regarding New Focus's directors and executive
officers is contained in New Focus's Annual Report on Form 10-K for the year
ended December 29, 2002 and its proxy statement dated April 15, 2003, which are
filed with the SEC. As of April 15, 2003, New Focus's directors and executive
officers beneficially owned approximately 3,317,696 shares (including shares
underlying options exercisable within 60 days), or 5.2%, of New Focus's common
stock. A more complete description is available in the Registration Statement
and the Joint Proxy Statement/Prospectus.

         STATEMENTS IN THIS DOCUMENT REGARDING THE PROPOSED TRANSACTION BETWEEN
BOOKHAM AND NEW FOCUS, THE EXPECTED TIMETABLE FOR COMPLETING THE TRANSACTION,
FUTURE FINANCIAL AND OPERATING RESULTS, BENEFITS AND SYNERGIES OF THE
TRANSACTION, FUTURE OPPORTUNITIES FOR THE COMBINED COMPANY AND ANY OTHER
STATEMENTS ABOUT BOOKHAM OR NEW FOCUS MANAGEMENTS' FUTURE EXPECTATIONS, BELIEFS,
GOALS, PLANS OR PROSPECTS CONSTITUTE FORWARD-LOOKING STATEMENTS WITHIN THE
MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995. ANY STATEMENTS
THAT ARE NOT STATEMENTS OF HISTORICAL FACT (INCLUDING STATEMENTS CONTAINING THE
WORDS "BELIEVES," "PLANS," "ANTICIPATES," "EXPECTS," "ESTIMATES" AND SIMILAR
EXPRESSIONS) SHOULD ALSO BE CONSIDERED TO BE FORWARD-LOOKING STATEMENTS. THERE
ARE A NUMBER OF IMPORTANT FACTORS THAT COULD CAUSE ACTUAL RESULTS OR EVENTS TO
DIFFER MATERIALLY FROM THOSE INDICATED BY SUCH FORWARD-LOOKING STATEMENTS,
INCLUDING: THE ABILITY TO CONSUMMATE THE TRANSACTION, THE ABILITY OF BOOKHAM TO
SUCCESSFULLY INTEGRATE NEW FOCUS'S OPERATIONS AND EMPLOYEES, THE ABILITY TO
REALIZE ANTICIPATED SYNERGIES AND COST SAVINGS; RECOVERY OF INDUSTRY DEMAND, THE
NEED TO MANAGE MANUFACTURING CAPACITY, PRODUCTION EQUIPMENT AND PERSONNEL TO
ANTICIPATED LEVELS OF DEMAND FOR PRODUCTS, POSSIBLE DISRUPTION IN NEW FOCUS'S
COMMERCIAL ACTIVITIES CAUSED BY TERRORIST ACTIVITIES OR ARMED CONFLICTS, THE
RELATED IMPACT ON MARGINS, REDUCTIONS IN DEMAND FOR OPTICAL COMPONENTS,
EXPANSION OF OUR BUSINESS OPERATIONS, QUARTERLY VARIATIONS IN RESULTS, CURRENCY
EXCHANGE RATE FLUCTUATIONS, MANUFACTURING CAPACITY YIELDS AND INVENTORY,
INTELLECTUAL PROPERTY ISSUES AND THE OTHER FACTORS DESCRIBED IN BOOKHAM'S ANNUAL
REPORT ON FORM 20-F FOR THE YEAR ENDED DECEMBER 31, 2002, AS AMENDED, AND NEW
FOCUS'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 29, 2002 AND NEW
FOCUS'S MOST RECENT QUARTERLY REPORT FILED WITH THE SEC AND BOOKHAM'S MOST
RECENT CURRENT REPORTS ON FORM 6-K SUBMITTED TO THE SEC. BOOKHAM AND NEW FOCUS
DISCLAIM ANY INTENTION OR OBLIGATION TO UPDATE ANY FORWARD-LOOKING STATEMENTS AS
A RESULT OF DEVELOPMENTS OCCURRING AFTER THE DATE OF THIS DOCUMENT.