<SEC-DOCUMENT>0000936395-21-000002-index.html : 20210218
<SEC-HEADER>0000936395-21-000002.hdr.sgml : 20210218
<ACCEPTANCE-DATETIME>20210218092736
ACCESSION NUMBER:		0000936395-21-000002
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20210218
DATE AS OF CHANGE:		20210218

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		21647844

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>def14anoticeofinternetavai.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: def14anoticeofinternetavai.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>defa11.jpg
<TEXT>
Document 2 - file: defa11.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>defa21.jpg
<TEXT>
Document 3 - file: defa21.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>defa31.jpg
<TEXT>
Document 4 - file: defa31.jpg

</DOCUMENT>
</SEC-DOCUMENT>