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                                                                    EXHIBIT 32.1

                            JDS UNIPHASE CORPORATION
                      CERTIFICATION PURSUANT TO SECTION 906
                        OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Quarterly Report on Form 10-Q of JDS Uniphase
Corporation (the "Company") for the period ended September 30, 2003 as filed
with the Securities and Exchange Commission (the "Report"), I, Kevin J. Kennedy,
Ph.D., Chief Executive Officer (Principal Executive Officer) of the Company,
hereby certify as of the date hereof, solely for purposes of Title 18, Chapter
63, Section 1350 of the United States Code, that to the best of my knowledge:

1.       The Report fully complies with the requirements of Section 13(a) or
         15(d), as applicable, of the Securities Exchange Act of 1934; and

2.       The information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations of
         the Company at the dates and for the periods indicated.

         This Certification has not been, and shall not be deemed, "filed" with
the Securities and Exchange Commission.

Dated: November 12, 2003

/s/ KEVIN J. KENNEDY
-----------------------------------------
Kevin J. Kennedy, Ph.D.
Chief Executive Officer
(Principal Executive Officer)


