    <SEC-DOCUMENT>0001193125-24-027746-index.html : 20240208
    <SEC-HEADER>0001193125-24-027746.hdr.sgml : 20240208
    <ACCEPTANCE-DATETIME>20240208095727
    ACCESSION NUMBER:		0001193125-24-027746
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20240208
    DATE AS OF CHANGE:		20240208

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CIENA CORP
    		CENTRAL INDEX KEY:			0000936395
    		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
    		ORGANIZATION NAME:           	04 Manufacturing
    		IRS NUMBER:				232725311
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1028

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-36250
    		FILM NUMBER:		24607188

    	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>d569818ddefa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: d569818ddefa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g569818g02a01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g569818g02a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g569818g03x01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g569818g03x01.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>