CIENA CORPORATION ANNOUNCES REPORTING DATE AND CONFERENCE CALL FOR FISCAL 2003 FIRST QUARTER

Linthicum, MD — 02/06/2003

Ciena Corporation (NASDAQ: CIEN) will announce results for its fiscal 2003 first quarter on Thursday, February 20, 2003, via Business Wire and First Call before the open of the financial markets. The press release also will be available on Ciena’s website at www.ciena.com. In conjunction with the announcement, Ciena’s management will host a teleconference call beginning at 8:30 AM (Eastern) on February 20, 2003. Interested listeners may access the live web broadcast at www.ciena.com.

Rebroadcast Information

For those listeners unable to participate in the live web broadcast on Thursday, February 20, an archived version of the conference call will be available shortly following the conclusion of the live call in the Investor Relations section of Ciena’s website at: www.ciena.com.


About Ciena

Ciena Corporation’s market-leading optical networking systems form the core for the new era of networks and services worldwide. Ciena’s LightWorks™ architecture enables next-generation optical services and changes the fundamental economics of service-provider networks by simplifying the network and reducing the cost to operate it. Additional information about Ciena can be found at http://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