CIENA NAMES RUSSELL STEVENSON SENIOR VICE PRESIDENT AND GENERAL COUNSEL

Linthicum, MD — 08/27/2001

Ciena Corporation (NASDAQ: CIEN), a global leader in intelligent optical networking systems and software, today announced that Russell Stevenson has joined the Company as senior vice president and general counsel. Stevenson will manage all aspects of Ciena's legal department, and will serve as an integral member of Ciena's senior management team.

Stevenson replaces Michael McCarthy, who was recently appointed as Ciena's senior vice president of worldwide sales and support.

Prior to joining Ciena, Stevenson served as executive vice president, general counsel and secretary of ARBROS Communications, Inc., an integrated communications provider serving medium-sized businesses in the northeastern United States.

"Russ' expertise and extensive legal background will be invaluable to Ciena as we continue our focus on conducting business with integrity and forthrightness," said Gary B. Smith, president and chief executive officer of Ciena. "We are pleased to welcome Russ to the team, and look forward to the value of his sound counsel."

Prior to his role at ARBROS Communications, Stevenson was general counsel for CyberCash, Inc., engaged in the private practice of law in Washington, D.C., and served as Deputy General Counsel in the Securities and Exchange Commission. Stevenson also is a legal scholar, having been a law professor for 10 years and authored several books and numerous articles during his distinguished legal career.


About Ciena

Ciena Corporation's market-leading intelligent 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 www.Ciena.com.
Note to Investors
This press release contains certain forward-looking statements based on current expectations, forecasts and assumptions of Ciena (the Company) that involve risks and uncertainties. Forward-looking statements in this release, including that Russell Stevenson will manage Ciena's legal department and that he will be an integral member of the management team, are based on information available to the Company as of the date hereof. The Company's actual results could differ materially from those stated or implied in such forward-looking statements, due to risks and uncertainties associated with the Company's business, which include the risk factors disclosed in the Company's Report on Form 10-Q filed with the Securities and Exchange Commission on August 16, 2001. Forward looking statements include statements regarding the Company's expectations, beliefs, intentions or strategies regarding the future and can be identified by forward-looking words such as "anticipate," "believe," "could," "estimate," "expect," "intend," "may," "should," "will," and "would" or similar words. The Company assumes no obligation to update the information included in this press release, whether as a result of new information, future events or otherwise.
Press Contacts:
Nicole Anderson
Ciena Corporation
(877) 857 -7377
pr@ciena.com
Investor Contacts:
Marie Downing
Ciena Corporation
(888) 243-6223
ir@ciena.com