<SEC-DOCUMENT>0001123292-17-000536-index.html : 20170302
<SEC-HEADER>0001123292-17-000536.hdr.sgml : 20170302
<ACCEPTANCE-DATETIME>20170302180220
ACCESSION NUMBER:		0001123292-17-000536
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20170227
FILED AS OF DATE:		20170302
DATE AS OF CHANGE:		20170302

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CIENA CORP
		CENTRAL INDEX KEY:			0000936395
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				232725311
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		7035 RIDGE ROAD
		CITY:			HANOVER
		STATE:			MD
		ZIP:			21076
		BUSINESS PHONE:		4108658500

	MAIL ADDRESS:	
		STREET 1:		7035 RIDGE ROAD
		CITY:			HANOVER
		STATE:			MD
		ZIP:			21076

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HAMILTON RICK
		CENTRAL INDEX KEY:			0001275606

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		17660539

	MAIL ADDRESS:	
		STREET 1:		9500 AMBERGIEN
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78729
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
Document 1 - file: edgar.html

Document 1 - RAW XML: edgar.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>hamiltonpoa.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
Document 2 - file: hamiltonpoa.htm

</DOCUMENT>
</SEC-DOCUMENT>