CIENA CORPORATION ANNOUNCES INVESTOR RELATIONS CONFERENCE CALL

Linthicum, MD — 02/04/2002

Ciena Corporation (NASDAQ: CIEN) will host a brief teleconference call with shareholders and the financial community beginning at 8:45 a.m. (Eastern) on Tuesday, February 5, 2002. A live web broadcast of the conference call can be heard through a link on Ciena's website: http://www.ciena.com/investors.


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.
Rebroadcast Information

For those listeners unable to participate in the live web broadcast on Tuesday, February 5, 2002, an archived version of the webcast will be available shortly following the conclusion of the live broadcast in the Investor Relations section of Ciena's website at: http://www.ciena.com/investors.

Press Contacts:
Nicole Anderson
Ciena Corporation
(877) 857 -7377
pr@ciena.com
Investor Contacts:
Marie Downing
Ciena Corporation
(888) 243-6223
ir@ciena.com