Exhibit 99.1

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES — OXLEY ACT OF 2002

In connection with the Annual Report of DiCon Fiberoptics, Inc. (the “Company”) on Form 10-K for the period ending March 31, 2003, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ho-Shang Lee, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes — Oxley Act of 2002, that:

	(1)		The Report fully complies with the requirements of Section 13(a) or 15(d) 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.

/s/ Ho-Shang Lee

Ho-Shang Lee
President and Chief Executive Officer
(chief executive officer)
June 27, 2003

This certification is made solely for purpose of 18 U.S.C. Section 1350, subject to the knowledge standard contained therein, and not for any other purpose.

DICON FIBEROPTICS INC 10-K