MEDIA ADVISORY

CIENA Technology Strategy Update Teleconference

LINTHICUM, MD — 05/14/2003

Ciena® Corporation (NASDAQ: CIEN), a leading provider of intelligent optical networking systems and software, will be holding a live teleconference to update the market on the company’s technology strategy of improving carrier network economics. The call will be held Thursday, May 15, 2003, at 11:00 a.m. Eastern Time

Addressing the audience will be Francois Locoh-Donou, vice president, marketing; Steve Chaddick, senior vice president and chief strategy officer; and, Steve Alexander, senior vice president and chief technology officer. Questions will be fielded from the press, market analyst and financial communities.

To access this call from domestic and international locations please dial (913) 981-4910. No access code is required. The call will also be webcast by CCBN and can be accessed via our company website at www.ciena.com.

If you are unable to participate in the call, an automated playback will be available from 2:00 p.m. (Eastern) on Thursday, May 15 through midnight (Eastern) on Monday, May 19, 2003. To listen to the replay, using access code 409508 please dial (888) 203-1112 from the U.S. and Canada and (719) 457-0820 from international locations. The webcast will also be archived on www.ciena.com.


About Ciena

Ciena Corporation delivers innovative network solutions to the world's largest service providers, increasing the cost-efficiency of current services while enabling the creation of new carrier-class data services built upon the existing network infrastructure. Additional information about Ciena can be found at www.ciena.com
Press Contacts:
Nicole Anderson
Ciena Corporation
(877) 857 -7377
pr@ciena.com
Investor Contacts:
Marie Downing
Ciena Corporation
(888) 243-6223
ir@ciena.com