UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                    FORM 8-K


                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


          Date of report (Date of earliest event reported) May 31, 2007
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                                Ciena Corporation
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             (Exact Name of Registrant as Specified in Its Charter)

                                    Delaware
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                 (State or Other Jurisdiction of Incorporation)

                0-21969                              23-2725311
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       (Commission File Number)           (IRS Employer Identification No.)


   1201 Winterson Road, Linthicum, MD                   21090
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(Address of Principal Executive Offices)             (Zip Code)

                                 (410) 865-8500
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              (Registrant's Telephone Number, Including Area Code)


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          (Former Name or Former Address, if Changed Since Last Report)

     Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_|  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

|_|  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

|_|  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

|_|  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))




ITEM 2.02 - RESULTS OF OPERATIONS AND FINANCIAL CONDITION

         On May 31, 2007, Ciena Corporation issued a press release announcing
its financial results for the second fiscal quarter ended April 30, 2007. The
text of the press release is furnished as Exhibit 99.1 to this Report. The
information in this Report shall not be deemed "filed" for purposes of Section
18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to
the liabilities of that section, and shall not be incorporated by reference into
any registration statement pursuant to the Securities Act of 1933, as amended.


ITEM 9.01 - FINANCIAL STATEMENTS AND EXHIBITS

         (c) The following exhibit is being filed herewith:


         Exhibit Number         Description of Document
         --------------         -----------------------
         Exhibit 99.1           Text of Press Release dated May 31, 2007,
                                issued by Ciena Corporation, reporting
                                its results of operations for the second
                                fiscal quarter ended April 30, 2007.






                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.

                             Ciena Corporation


Date: May 31, 2007           By:   /S/ Russell B. Stevenson, Jr.
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                                   Russell B. Stevenson, Jr.
                                   Senior Vice President, General Counsel and
                                   Secretary