<SEC-DOCUMENT>0000936395-18-000021-index.html : 20180531
<SEC-HEADER>0000936395-18-000021.hdr.sgml : 20180531
<ACCEPTANCE-DATETIME>20180531070421
ACCESSION NUMBER:		0000936395-18-000021
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		27
CONFORMED PERIOD OF REPORT:	20180531
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180531
DATE AS OF CHANGE:		20180531

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:		18869992

	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>a8-k2018q2earningsrelease.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a8-k2018q2earningsrelease.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>exhibit991-2018q2earningsp.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: exhibit991-2018q2earningsp.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>ex992investorpresent.htm
<DESCRIPTION>EXHIBIT 99.2
<TEXT>
Document 3 - file: ex992investorpresent.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>4
<FILENAME>ex993pressrelease.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
Document 4 - file: ex993pressrelease.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>ex992investorpresent001.jpg
<TEXT>
Document 5 - file: ex992investorpresent001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>ex992investorpresent002.jpg
<TEXT>
Document 6 - file: ex992investorpresent002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>ex992investorpresent003.jpg
<TEXT>
Document 7 - file: ex992investorpresent003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>ex992investorpresent004.jpg
<TEXT>
Document 8 - file: ex992investorpresent004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>ex992investorpresent005.jpg
<TEXT>
Document 9 - file: ex992investorpresent005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>ex992investorpresent006.jpg
<TEXT>
Document 10 - file: ex992investorpresent006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>ex992investorpresent007.jpg
<TEXT>
Document 11 - file: ex992investorpresent007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>ex992investorpresent008.jpg
<TEXT>
Document 12 - file: ex992investorpresent008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>ex992investorpresent009.jpg
<TEXT>
Document 13 - file: ex992investorpresent009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>ex992investorpresent010.jpg
<TEXT>
Document 14 - file: ex992investorpresent010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>ex992investorpresent011.jpg
<TEXT>
Document 15 - file: ex992investorpresent011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>ex992investorpresent012.jpg
<TEXT>
Document 16 - file: ex992investorpresent012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>ex992investorpresent013.jpg
<TEXT>
Document 17 - file: ex992investorpresent013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>ex992investorpresent014.jpg
<TEXT>
Document 18 - file: ex992investorpresent014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>ex992investorpresent015.jpg
<TEXT>
Document 19 - file: ex992investorpresent015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>ex992investorpresent016.jpg
<TEXT>
Document 20 - file: ex992investorpresent016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>ex992investorpresent017.jpg
<TEXT>
Document 21 - file: ex992investorpresent017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>ex992investorpresent018.jpg
<TEXT>
Document 22 - file: ex992investorpresent018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>ex992investorpresent019.jpg
<TEXT>
Document 23 - file: ex992investorpresent019.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>ex992investorpresent020.jpg
<TEXT>
Document 24 - file: ex992investorpresent020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>ex992investorpresent021.jpg
<TEXT>
Document 25 - file: ex992investorpresent021.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>ex992investorpresent022.jpg
<TEXT>
Document 26 - file: ex992investorpresent022.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>ex992investorpresent023.jpg
<TEXT>
Document 27 - file: ex992investorpresent023.jpg

</DOCUMENT>
</SEC-DOCUMENT>