UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No. )

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o Preliminary Proxy Statement	o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o Definitive Proxy Statement
þ Definitive Additional Materials
o Soliciting Material Pursuant to § 240.14a-12

Ciena Corporation

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement if other than the Registrant)

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þ No fee required.

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February 10, 2016

Notice to Ciena Employees             

Availability of Proxy Materials & Ciena Annual Meeting of Stockholders

Each year Ciena stockholders have the opportunity to participate in the governance of our company by submitting proxies and voting at our Annual Meeting. This year's meeting is scheduled for Thursday, March 24, 2016 at 3:00 p.m. As noted in today's press release, our Annual Meeting will be completely virtual and held online at www.virtualshareholdermeeting.com/ciena2016.

If you were a Ciena stockholder as of January 28, 2016, the record date for this year's Annual Meeting, you will soon receive a Notice that your proxy materials are available online. The Notice will detail the items that are on the agenda for stockholder consideration at this year's Annual Meeting. These include:

• the election of three nominees to serve as Class I directors;

• an amendment to the 2008 Omnibus Incentive Plan, adding a comprehensive “clawback” provision, establishing an annual compensation limit for cash and equity awards to non-employee directors, and shortening the minimum vesting period for equity awards to non-employee directors and Executive or Non-Executive Chairs, and to re-approve the material terms of performance-based compensation under the 2008 Omnibus Incentive Plan for purposes of Section 162(m) of the Internal Revenue Code of 1986, as amended;

• the ratification of the appointment of PricewaterhouseCoopers as our auditors for fiscal 2016; and

• the annual advisory “say on pay” vote on our executive compensation.

The Notice you receive will explain how to access our proxy materials online and how to vote your shares. This year, in addition to traditional voting methods, we are providing stockholders the ability to vote via mobile device.

Even if you are not a Ciena stockholder, you may be interested in reviewing a multimedia version of our Fiscal 2015 Annual Report as well as our proxy statement for the Annual Meeting — both of which are available online at http://investor.ciena.com/. Printed copies of our proxy materials can be obtained by completing the information request form accessible on that same webpage. As in the past, we will provide printed copies of the Annual Report to the receptionist or facilities coordinator at each major Ciena facility for distribution to employees, customers and visitors as needed.

If you have any additional questions, please don't hesitate to contact Amanda Norton in Ciena's Investor Relations department directly at 410.865.8989 or by email at anorton@ciena.com.