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                                                                   EXHIBIT 10.36

                                 PROMISSORY NOTE

$400,000                                                         August __, 2000

     FOR VALUE RECEIVED, the undersigned, FREDERICK R. FROMM, hereby
unconditionally promises to pay to the order of OPLINK COMMUNICATIONS, INC., a
California corporation (the "Company" or "Holder"), at such place as Holder
hereof may designate, in lawful money of the United States of America and in
immediately available funds, the principal sum of $400,000 together with
interest accrued from the date hereof on the unpaid principal at the rate of
6.70% per annum, calculated on the basis of a 365-day year for the actual number
of days elapsed.

     1.   Principal Repayment.

     The outstanding principal amount and any accrued and unpaid interest
hereunder shall be due and payable over a period of four (4) years in two equal
installments due on the second and fourth anniversary of the date hereof;
provided, however, that in the event that the undersigned's employment is
terminated the entire principal balance and all accrued interest shall become
immediately due and payable, and immediately collectible by Holder pursuant to
applicable law.

     2.   Default. If the undersigned fails to pay any of the principal and
accrued interest when due, the Company, at its sole option, shall have the right
to accelerate this Note, in which event the entire principal balance and all
accrued interest shall become immediately due and payable, and immediately
collectible by Holder pursuant to applicable law.

     3.   Prepayment. This Note may be prepaid at any time without penalty. All
money paid toward the satisfaction of this Note shall be applied first to the
payment of interest as required hereunder and then to the retirement of the
principal.

     4.   Full Recourse Note. This note is full recourse, accordingly, Holder
shall be entitled to seek personal judgement against the undersigned in the
event of a default for the full amount of the principal and accrued interest
then outstanding, plus any costs or expenses as provided herein.

     5.   Non-Consumer Debt. The undersigned hereby represents and agrees that
the amounts due under this Note are not consumer debt, and are not incurred
primarily for personal, family or household purposes, but are for business and
commercial purposes only.

     6.   Waiver. The undersigned hereby waives presentment, protest and notice
of protest, demand for payment, notice of dishonor and all other notices or
demands in connection with the delivery, acceptance, performance, default or
endorsement of this Note.

     7.   Expenses; Attorneys' Fees. The Holder hereof shall be entitled to
recover, and the undersigned agrees to pay when incurred, all costs and expenses
of collection of this Note, including without limitation, reasonable attorneys'
fees.


                                       1.

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     8.   Governing Law. This Note shall be governed by, and construed, enforced
and interpreted in accordance with, the laws of the State of California,
excluding conflict of laws principles that would cause the application of laws
of any other jurisdiction.


                                         -------------------------------------
                                         FREDERICK R. FROMM






                                         ACCEPTED AND AGREED TO BY:

                                         OPLINK COMMUNICATIONS, INC.



                                         -------------------------------------
                                         OFFICER'S SIGNATURE



                                         -------------------------------------
                                         NAME OF OFFICER AND TITLE


                                       2.