Viavi Solutions (VIAV) S-8 Registration of securities for employees

Exhibit 5.1

MORRISON & FOERSTER LLP
Palo Alto, California

May 2, 2000

JDS Uniphase Corporation
163 Baypointe Parkway
San Jose, California 95134

Ladies and Gentlemen:

We have examined the Registration Statement on Form S-8 to be filed by JDS Uniphase Corporation (the "Company") with the Securities and Exchange Commission (the "SEC") in connection with the registration under the Securities Act of 1933, as amended, of an aggregate of 181,190 shares of the Company's Common Stock, $.001 par value (the "Plan Shares") which will be issuable under the Cronos Integrated Microsystems, Inc. 1999 Stock Plan (the "Plan").

As your counsel in connection with the Registration Statement, we have examined the proceedings taken by you in connection with the assumption of the Plan and the authorization of the issuance of the shares of Common Stock under the Plan and such documents as we have deemed necessary to render this opinion.

Based upon the foregoing, it is our opinion that the Plan Shares, when issued and outstanding pursuant to the terms of the Plan, will be validly issued, fully paid and nonassessable shares of the Company's Common Stock.

We consent to the use of this opinion as an exhibit to the Registration Statement.

Very truly yours,

 /s/ Morrison & Foerster LLP