<SEC-DOCUMENT>0000936395-17-000030-index.html : 20170526
<SEC-HEADER>0000936395-17-000030.hdr.sgml : 20170526
<ACCEPTANCE-DATETIME>20170526104013
ACCESSION NUMBER:		0000936395-17-000030
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20161231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20161231
</ITEM>
</RULE>
FILED AS OF DATE:		20170526
DATE AS OF CHANGE:		20170526

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:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		17872272

	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>SD
<SEQUENCE>1
<FILENAME>formsd2017.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: formsd2017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>exhibit101-conflictsminera.htm
<DESCRIPTION>EXHIBIT 1.01
<TEXT>
Document 2 - file: exhibit101-conflictsminera.htm

</DOCUMENT>
</SEC-DOCUMENT>