ADVISORY/ Chorum Technologies' Dr. Chiao to Present Company's WDM Technology at University of Texas at Arlington Engineering and Graduate Seminar.

Business Editors & High Tech Writers

ADVISORY...for Friday (April 20)

--(BUSINESS WIRE)

WHAT:       Dr. J.C. Chiao from Chorum Technologies in Richardson,
            Texas, will present "Trends in Fiber Optics" at the
            Engineering and Graduate Seminar at the University of
            Texas at Arlington.

WHO:        Dr. Jung-Chih (J.C.) Chiao, Senior Technology Advisor,
            Chorum Technologies

WHEN:       Friday, April 20, 2001, 11 a.m. CST

WHERE:      The University of Texas at Arlington
            Engineering Building
            Nedderman Hall
            400 Yates Street
            Arlington, Texas 76019
            817/272-5046

VISUALS:    Presentation to include schematics of optical signal
            processing architecture and performance results.