EXHIBIT 23.4

                CONSENT OF ARTHUR ANDERSEN, INDEPENDENT AUDITORS

As independent auditors, we consent to the incorporation by reference in the
Registration Statement (Amendment No. 1 to Form S-3) pertaining to the common
stock issued to Rockwell International Corporation by JDS Uniphase Corporation
of our report dated 15 December 1998 with respect to the consolidated financial
statements of IOC International Limited as at 30 September 1998 and for the year
ended 30 September 1998, included in SDL, Inc.'s Annual Report (Form 10-K) for
the year ended 31 December 1999 and to all references to our Firm included in
this registration statement.

                                                            /s/ Arthur Andersen

Cambridge, England
November 13, 2001