<SUBMISSION>
<ACCESSION-NUMBER>0000950133-08-001296
<TYPE>S-8
<PUBLIC-DOCUMENT-COUNT>3
<FILING-DATE>20080327
<DATE-OF-FILING-DATE-CHANGE>20080327
<EFFECTIVENESS-DATE>20080327
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>CIENA CORP
<CIK>0000936395
<ASSIGNED-SIC>3661
<IRS-NUMBER>232725311
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1031
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>S-8
<ACT>33
<FILE-NUMBER>333-149929
<FILM-NUMBER>08715669
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1201 WINTERSON ROAD
<CITY>LINTHICUM
<STATE>MD
<ZIP>21090
<PHONE>4108658500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1201 WINTERSON ROAD
<CITY>LINTHICUM
<STATE>MD
<ZIP>21090
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>w51883sv8.htm
<DESCRIPTION>S-8
<TEXT>
<HTML>
<HEAD>
<TITLE>sv8</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 10pt"><B>As filed with the Securities and Exchange Commission on March&nbsp;27, 2008</B></DIV>



<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Registration No.&nbsp;333-</B>
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>






<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933<BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>Ciena Corporation</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>



<DIV align="center" style="font-size: 10pt; margin-top: 18pt">Delaware<BR>
(State or other jurisdiction of<BR>
incorporation or organization)
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">23-2725311<BR>
<DIV style="width: 100%; border-bottom: 1px solid #000000; font-size: 1px">&nbsp;</DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(I.R.S. Employer Identification No.)</DIV>



<DIV align="center" style="font-size: 10pt; margin-top: 18pt">1201 Winterson Road<BR>
Linthicum, Maryland 21090<BR>
(410)-865-8500<BR>
<DIV style="width: 100%; border-bottom: 1px solid #000000; font-size: 1px">&nbsp;</DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(Address, including zip
code, and telephone number,<BR>including area code, of registrant&#146;s principal executive offices)</DIV>


<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>



<DIV align="center" style="font-size: 10pt; margin-top: 18pt">Ciena Corporation<BR>
2008 Omnibus Incentive Plan<BR>
(Full title of the Plan)
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">Russell B. Stevenson, Jr.<BR>
Senior Vice President, General Counsel and Secretary<BR>
Ciena Corporation<BR>
1201 Winterson Road<BR>
Linthicum, Maryland 21090<BR>
(410)&nbsp;865-8500
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">(Name, address and telephone number, including area code, of agent for service)
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">Copy to:<BR>
Michael J. Silver<BR>
Hogan &#038; Hartson L.L.P.<BR>
111 South Calvert Street<BR>
Baltimore, Maryland 21202<BR>
(410)&nbsp;659-2700
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="24%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="15" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">Proposed</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">Proposed</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">Title of securities</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">Amount to be</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">maximum offering</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">maximum aggregate</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">Amount of</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">to be registered</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">registered(1)</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">price per share (2)</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">offering price (2)</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">registration fee</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD align="center" style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, $0.01
par value per share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>

<TD align="center" valign="bottom" style="border-top: 2px solid #000000">16,002,957</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>

<TD align="center" valign="bottom" style="border-top: 2px solid #000000">$29.19</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>

<TD align="center" valign="bottom" style="border-top: 2px solid #000000">$467,126,315</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>

<TD align="center" valign="bottom" style="border-top: 2px solid #000000">$18,359</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="15" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Pursuant to Rule&nbsp;416 under the Securities Act of 1933, as amended (the &#147;Securities
Act&#148;), this Registration Statement shall also cover any additional shares of common stock
which become issuable under the above-named plan by reason of any stock dividend, stock
split, recapitalization or any other similar transaction effected without the receipt of
consideration which results in an increase in the number of our outstanding shares of
common stock.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for the purpose of calculating the registration fee in accordance with
Rule 457(c) and (h)&nbsp;under the Securities Act of 1933, as amended, based upon the average of
the high and low sale prices of the Common Stock as reported on the NASDAQ Global Select
Exchange on March&#160;20, 2008.</TD>
</TR>

</TABLE>



<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>







<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>
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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">






<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXPLANATORY NOTE</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ciena Corporation
(the &#147;Registrant&#148; or &#147;Ciena&#148;) is filing this Registration Statement on Form
S-8 to register the issuance of eight million shares of common stock authorized for issuance
under the Ciena Corporation 2008 Omnibus Incentive Plan (the &#147;2008 Plan&#148;). The number of shares
available for issuance under the 2008 Plan will be increased from time to time by: (i)&nbsp;the number
of shares subject to outstanding stock options or restricted stock units granted under our &#147;prior
equity incentive compensation plans&#148; that are forfeited, expire or are canceled without delivery of
common stock following March&nbsp;26, 2008, the effective date of the 2008 Plan, and (ii)&nbsp;the number of
shares subject to awards assumed or substituted in connection with the acquisition of another
company. Ciena&#146;s &#147;prior equity incentive compensation plans&#148; include the 2000 Equity Incentive
Compensation Plan, 1994 Third Amended and Restated Stock Option Plan, 1996 Outside Directors Stock
Option Plan, ONI Systems Corp. 1999 Equity Incentive Plan, ONI Systems Corp. 1998 Equity Incentive
Plan, ONI Systems Corp. 1997 Stock Option Plan, 1999 Non-Officer Stock Option Plan, Cyras Systems,
Inc. 1998 Stock Plan, Omnia Communications, Inc. 1997 Stock Plan, Lightera Networks, Inc. 1998
Stock Plan, WaveSmith Networks, Inc. 2000 Stock Option and Incentive Plan, Internet Photonics, Inc.
2000 Corporate Stock Option Plan and Catena Networks, Inc. 1998 Equity Incentive Plan. Upon the
effectiveness of the 2008 Plan, Ciena will not make any further awards under its prior equity
incentive compensation plans. Ciena is also registering in this
Form&#160;S-8 an additional 8,002,957 shares of common stock
underlying equity awards issued under Ciena&#146;s prior equity
incentive compensation plans that were outstanding as of
March&#160;26, 2008, the effective date of the 2008 Plan. This amount
represents the maximum number of additional shares that may be added
to the 2008 Plan pursuant to subclause (i) above; should these awards
be forfeited, canceled or expire subsequent to March&#160;26, 2008,
without delivery of common stock.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART I</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;1. Plan Information.*</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>Item&nbsp;2. Registrant Information and Employee Plan Annual Information.*</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left"><B>*</B></TD>
    <TD>&nbsp;</TD>
    <TD>The documents containing the information specified in Part&nbsp;I will be sent or given to
employees as specified by Rule&nbsp;428(b)(1) of the Securities Act of 1933 (the &#147;Securities Act&#148;). In
accordance with the instructions to Part&nbsp;I of Form S-8, such documents will not be filed with the
Securities and Exchange Commission (the &#147;Commission&#148;). These documents and the documents
incorporated by reference pursuant to Item&nbsp;3 of Part&nbsp;II of this registration statement, taken
together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities
Act.</TD>
</TR>

</TABLE>



<P align="center" style="font-size: 10pt"><!-- Folio -->I-2<!-- /Folio -->
</DIV>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant hereby incorporates by reference into this registration statement the following
documents filed by it with the Commission:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(a)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Registrant&#146;s Form 10-K for the fiscal year ended October&nbsp;31, 2007 filed
with the Commission on December&nbsp;27, 2007 and the Form 10-Q for the first fiscal
quarter ended January&nbsp;31, 2008 filed with the Commission on March&nbsp;7, 2008;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(b)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Registrant&#146;s Current Reports on Form 8-K filed with the Commission on
December&nbsp;13, 2007 (only as to Item&nbsp;5.02 therein), January&nbsp;2, 2008, January&nbsp;24, 2008,
February&nbsp;1, 2008, March&nbsp;5, 2008 and March&#160;27, 2008;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(c)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of the Registrant&#146;s Common Stock, $.01 par value per share
(&#147;Common Stock&#148;), contained in the Registrant&#146;s Registration Statement on Form 8-A
filed with the Commission on January&nbsp;13, 1997, including all amendments and reports
filed under Section 13(a) or 15(d) of the Exchange Act for purposes of updating the
description of Common Stock.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, all documents and reports filed by the Registrant subsequent to the date hereof
pursuant to Sections&nbsp;13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment to this registration statement which indicates that all securities offered
have been sold or which deregisters all securities remaining unsold, shall be deemed to be
incorporated by reference in this registration statement and to be part hereof from the date of
filing of such documents or reports. Any statement contained in a document incorporated or deemed
to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of
this registration statement to the extent that a statement contained herein or in any other
subsequent filed document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement. Any such statement so modified or superseded shall not be
deemed, except as so modified or superseded, to constitute a part of this registration statement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Description of Securities.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under Section&nbsp;145 of the Delaware General Corporation Law (&#147;DGCL&#148;), a corporation may
indemnify its directors, officers, employees and agents and its former directors, officers,
employees and agents and those who serve, at the corporation&#146;s request, in such capacities with
another enterprise, against expenses (including attorneys&#146; fees), as well as judgments, fines and
settlements in nonderivative lawsuits, actually and reasonably incurred in connection with the
defense of any action, suit or proceeding in which they or any of them were or are made parties or
are threatened to be made parties by reason of their serving or having served in such capacity. The
DGCL provides, however, that such person must have acted in good faith and in a manner such person
reasonably believed to be in (or not opposed to) the best interests of the corporation and, in the
case of a criminal action, such person must have had no reasonable cause to believe his or her
conduct was unlawful. In addition, the DGCL does not permit indemnification in an action or suit
by or in the right of the corporation, where such person has been adjudged liable to the
corporation, unless, and only to the extent that, a court determines that such person fairly and
reasonably is entitled to indemnity for costs the court deems proper in light of liability
adjudication. Indemnity is mandatory to the extent a claim, issue or matter has been successfully
defended.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-1<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Amended and Restated Certificate of Incorporation of Ciena (the &#147;Ciena Certificate&#148;)
contains provisions that provide that no director of Ciena shall be liable for breach of fiduciary
duty as a director, except for: (1)&nbsp;any breach of the directors&#146; duty of loyalty to Ciena or its
stockholders; (2)&nbsp;acts or omissions not in good faith or which involve intentional misconduct or a
knowing violation of the law; (3)&nbsp;liability under Section&nbsp;174 of the DGCL; or (4)&nbsp;any transaction
from which the director derived an improper personal benefit. The Ciena Certificate contains
provisions that further provide for the indemnification of directors and officers to the fullest
extent permitted by the DGCL. Under the bylaws of Ciena, Ciena is required to advance expenses
incurred by an officer or director in defending any such action if the director or officer
undertakes to repay such amount if it is determined that the director or officer is not entitled to
indemnification. In addition, Ciena has entered into indemnity agreements with each of its
directors pursuant to which Ciena has agreed to indemnify the directors as permitted by the DGCL.
Ciena has obtained directors and officers liability insurance against certain liabilities,
including liabilities under the Securities Act.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Exemption from Registration Claimed.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="11%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="84%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left">Exhibit</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Number</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Description</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1(1)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Specimen Stock Certificate</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Russell B. Stevenson, Jr., Senior Vice President,
General Counsel and Secretary of Ciena Corporation (filed
herewith)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1(2)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2008 Omnibus Incentive Plan</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Russell B. Stevenson, Jr., Senior Vice President,
General Counsel and Secretary of Ciena Corporation (contained in
Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of PricewaterhouseCoopers LLP (filed herewith)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included with signature page)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference from the Registrant&#146;s Annual Report on Form 10-K filed December&nbsp;27,
2007.<BR></TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference from the Registrant&#146;s Form 8-K filed on March&nbsp;27, 2008.</TD>
</TR>

</TABLE>



<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Registrant hereby undertakes:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) To file, during any period in which offers or sales are being made, a post-effective
amendment to this registration statement:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) To include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act of 1933;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) To reflect in the prospectus any facts or events arising after the effective date of the
registration statement (or the most recent post-effective amendment thereof) which, individually or
in the aggregate, represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of securities offered would not exceed that which was registered) and
any deviation from the low or high end of the estimated maximum offering range may be reflected in
the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than a 20&nbsp;percent change in the maximum aggregate
offering price set forth in the &#147;Calculation of Registration Fee&#148; table in the effective
registration statement; and
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-2<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such information in
the registration statement;
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><I>provided, however</I>, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the registration
statement is on Form S-3, Form S-8 or Form F-3, and the information required to be included in a
post-effective amendment by those paragraphs is contained in periodic reports filed with or
furnished to the Commission by the Registrant pursuant to Section&nbsp;13 or Section 15(d) of the
Securities Exchange Act that are incorporated by reference in the registration statement.
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial <I>bona fide </I>offering thereof.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act of 1933, each filing of the Registrant&#146;s annual report pursuant
to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable,
each filing of an employee benefit plan&#146;s annual report pursuant to Section 15(d) of the Securities
Exchange Act of 1934) that is incorporated by reference in the registration statement shall be
deemed to be a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial <I>bona fide </I>offering
thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers, and controlling persons of the registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed in
the Act and is, therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred or paid by a
director, officer or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with
the securities being registered, the Registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-3<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and
has duly caused this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Linthicum, State of Maryland, on this 27th day of March,
2008.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>CIENA CORPORATION</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/S/ Gary B. Smith
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Gary B. Smith&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-4<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>

</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>POWER OF ATTORNEY</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and
appoints Gary B. Smith and Russell B. Stevenson, Jr., and each of them, his or her true and lawful
attorney-in-fact and agents, with full power of substitution and resubstitution, from such person
and in each person&#146;s name, place and stead, in any and all capacities, to sign any and all
amendments (including post-effective amendments) to this Registration Statement, any Registration
Statement relating to this Registration Statement under Rule&nbsp;462 and to file the same, with all
exhibits thereto and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and
perform each and every act and thing requisite and necessary to be done as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents, or any of them, may lawfully do or cause to be done.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities and on the dates indicated.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="40%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="40%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Signature</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Title</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Date</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Patrick H. Nettles, Ph.D.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Patrick H. Nettles, Ph.D.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Executive Chairman of the Board
of Directors
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Gary B. Smith
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Gary B. Smith
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">President, Chief Executive
Officer and Director
(Principal Executive Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ James E. Moylan
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
James E. Moylan, Jr.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice President, Finance and
Chief Financial Officer
(Principal Financial Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Andrew C. Petrik
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Andrew C. Petrik
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Vice President, Controller and
Treasurer
(Principal Accounting Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Stephen P. Bradley
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Stephen P. Bradley
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Harvey B. Cash
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Harvey B. Cash
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Bruce L. Claflin
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Bruce L. Claflin
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Lawton W. Fitt
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Lawton W. Fitt
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->II-5<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="40%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="40%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Signature</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Title</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Date</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Judith M. O&#146;Brien
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Judith M. O&#146;Brien
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Michael J. Rowny
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Michael J. Rowny
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/S/ Gerald H. Taylor
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Gerald H. Taylor
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">March&nbsp;27, 2008</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->II-6<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXHIBIT INDEX</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="9%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="86%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left">Exhibit</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Number</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Description</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1(1)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Specimen Stock Certificate</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Russell B. Stevenson, Jr., Senior Vice President,
General Counsel and Secretary of Ciena Corporation (filed
herewith)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2008 Omnibus Incentive Plan</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Russell B. Stevenson, Jr., Senior Vice President,
General Counsel and Secretary of Ciena Corporation (contained in
Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of PricewaterhouseCoopers LLP (filed herewith)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included with signature page)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference from the Registrant&#146;s Annual Report on Form 10-K filed December&nbsp;27,
2007.<BR></TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Incorporated by reference from the Registrant&#146;s Form 8-K filed on March&nbsp;27, 2008.</TD>
</TR>

</TABLE>




<P align="center" style="font-size: 10pt"><!-- Folio -->II-7<!-- /Folio -->
</DIV>




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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>w51883exv5w1.htm
<DESCRIPTION>EX-5.1
<TEXT>
<HTML>
<HEAD>
<TITLE>exv5w1</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="right" style="font-size: 10pt; margin-top: 12pt">EXHIBIT 5.1
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">March&nbsp;27, 2008
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Board of Directors<BR>
Ciena Corporation<BR>
1201 Winterson Road<BR>
Linthicum, Maryland 21090

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Ladies and Gentlemen:

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This opinion letter is furnished to you to enable you to fulfill the requirements of Item
601(b)(5) of Regulation&nbsp;S-K, 17 C.F.R. &#167; 229.601(b)&#160;(5),&#160; in connection with the registration
statement on Form S-8 (the &#147;<U>Registration Statement</U>&#148;) filed with the Securities and Exchange
Commission relating to the registration of up to 16,002,957 shares of the Company&#146;s common stock, par
value $0.01 per share (the &#147;<U>Shares</U>&#148;), issuable under the Ciena Corporation 2008 Omnibus
Incentive Plan (the &#147;<U>Plan</U>&#148;). For purposes of this opinion letter, I have examined such
records, documents and proceedings as I have deemed relevant and necessary as a basis for the
opinion expressed herein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This opinion letter is based as to matters of law solely on the Delaware General Corporation
Law, as amended. I express no opinion herein as to any other laws, statutes, ordinances, rules, or
regulations. As used herein, the term &#147;Delaware General Corporation Law, as amended&#148; includes the
statutory provisions contained therein, all applicable provisions of the Delaware Constitution and
reported judicial decisions interpreting these laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based upon, subject to and limited by the foregoing, I am of the opinion that when issued in
accordance with the terms of the Plan and the option agreements issued under the Plan, the Shares
will be validly issued, fully paid, and nonassessable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This opinion letter has been prepared for your use in connection with the Registration
Statement. I hereby consent to the filing of this opinion letter as Exhibit&nbsp;5.1 to the Registration
Statement. In giving this consent, I do not thereby admit that I am an &#147;expert&#148; within the meaning
of the Securities Act of 1933, as amended.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Very truly yours,<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/S/ Russell B. Stevenson, Jr.
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Russell B. Stevenson, Jr.<BR>
Senior Vice President, General<BR>
Counsel and Secretary&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>
<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>3
<FILENAME>w51883exv23w2.htm
<DESCRIPTION>EX-23.2
<TEXT>
<HTML>
<HEAD>
<TITLE>exv23w2</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="right" style="font-size: 10pt; margin-top: 12pt">EXHIBIT 23.2
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of
our report dated December&nbsp;27, 2007 relating to the financial statements and the effectiveness of
internal control over financial reporting, which appears in Ciena Corporation&#146;s Annual Report on
Form 10-K for the year ended October&nbsp;31, 2007.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">/s/ PricewaterhouseCoopers LLP

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">McLean, VA<BR>
March&nbsp;27, 2008

</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>
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