<SEC-DOCUMENT>0001193125-18-289772-index.html : 20181001
<SEC-HEADER>0001193125-18-289772.hdr.sgml : 20181001
<ACCEPTANCE-DATETIME>20181001172529
ACCESSION NUMBER:		0001193125-18-289772
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180928
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20181001
DATE AS OF CHANGE:		20181001

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		181098561

	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>8-K
<SEQUENCE>1
<FILENAME>d621084d8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: d621084d8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>2
<FILENAME>d621084dex101.htm
<DESCRIPTION>EX-10.1
<TEXT>
Document 2 - file: d621084dex101.htm

</DOCUMENT>
</SEC-DOCUMENT>