CIENA CORP

Code of Business Conduct and Ethics

We maintain a Code of Business Conduct and Ethics that sets standards of conduct for all of Ciena’s directors, officers and employees. The Code of Business Conduct and Ethics reflects Ciena’s policy of dealing with all persons, including our customers, business partners, employees, investors, and suppliers, with honesty and integrity. All employees are required to complete training on our Code of Business Conduct and Ethics, and we conduct recurring employee affirmations with respect to our Code of Business Conduct and Ethics and periodic training and communication related to specific topics contained therein.

Code of Ethics for Directors

We maintain a Code of Ethics for Directors, which supplements the obligations of directors under the Code of Business Conduct and Ethics and sets additional standards of conduct for our directors. The Code of Ethics for Directors outlines responsibilities of our directors with respect to their fiduciary duties, conflicts of interest, treatment of confidential Ciena information, communications and other compliance matters.

Code of Ethics for Senior Financial Officers

In accordance with the Sarbanes-Oxley Act of 2002, we maintain a Code of Ethics for Senior Financial Officers that specifically applies to Ciena’s Chief Executive Officer, Chief Financial Officer and Controller. Its purpose is to deter wrongdoing and to promote honest and ethical conduct, and compliance with the law, particularly as it relates to the maintenance of Ciena’s financial records and the preparation of financial statements filed with the SEC. We intend to satisfy any disclosure requirement under Item 5.05 of Form 8-K regarding an amendment to, or waiver from, a provision of the Code of Ethics for Senior Financial Officers by posting such information on our website atwww.ciena.com.

Each of these documents can be found on the "Corporate Responsibility – Governance Documents" page of the "Investors" section of our website atwww.ciena.com. Copies of these documents may also be obtained without charge by writing to: Ciena Corporation, 7035 Ridge Road, Hanover, Maryland 21076, Attention: Corporate Secretary.