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SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
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1. Name and Address of Reporting Person*
SMITH ARTHUR D
(Last) (First) (Middle)
1201 WINTERSON ROAD
(Street)
LINTHICUM MD 21090
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
09/03/2003 		3. Issuer Name and Ticker or Trading Symbol
CIENA CORP [ CIEN ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Sr.V.P., Global Operations
 5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 0 D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy) 09/17/1999(1) 09/17/2008 Common Stock 3,376 6.1875 D
Employee Stock Option (right to buy) 11/12/1999(1) 11/12/2008 Common Stock 11,800 8.6875 D
Employee Stock Option (right to buy) 10/20/2000(1) 10/20/2009 Common Stock 15,600 14.9065 D
Employee Stock Option (right to buy) 01/17/2001(1) 01/17/2010 Common Stock 35,600 33.4065 D
Employee Stock Option (right to buy) 05/16/2002(1) 05/16/2011 Common Stock 50,000 55.44 D
Employee Stock Option (right to buy) 10/16/2002(1) 10/16/2011 Common Stock 90,300 16.38 D
Employee Stock Option 03/12/2003(1) 03/12/2012 Common Stock 187,500 10.29 D
Employee Stock Option (right to buy) 11/19/2003(1) 11/19/2012 Common Stock 175,000 4.53 D
Explanation of Responses:
1. The shares vest at rate of 25% on the one year anniversary of the grant date and 2.084% for each full month after the one year anniversary of the grant date.
Arthur D. Smith/by Anita Weiskerger pursuant to POA 10/13/2003
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
POWER OF ATTORNEY

	The undersigned hereby constitutes and appoints Russell B. Stevenson, Jr.
 and Anita J. Weiskerger, or his/her assignee, the undersigned's true and
lawful attorney-in-fact to:

(1)	execute for and on behalf of the undersigned Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities and Exchange Act
of 1934 and the rules thereunder;

(2)	do and perform any and all acts for an on behalf of the undersigned
which may be necessary or desirable to complete the execution of
any such Forms 3, 4 or 5 and the timely filing of such form with
the United States Securities and Exchange Commission, the Nasdaq
Stock Market and any other authority; and

(3)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally required by, the
undersigned.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform all and every act and thing whatsoever
requisite, necessary and proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorney-in-fact, in serving in such capacity at the request of the
undersigned, is not assuming any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.  This Power
of Attorney can only be revoked by delivering a signed, original "Revocation
of Power of Attorney" to the attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 3rd day of October, 2003.

						/s/ Arthur Smith
					Signature

						Arthur Smith
					Print Name