<SEC-DOCUMENT>0000936395-20-000025-index.html : 20200604
<SEC-HEADER>0000936395-20-000025.hdr.sgml : 20200604
<ACCEPTANCE-DATETIME>20200604070835
ACCESSION NUMBER:		0000936395-20-000025
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		33
CONFORMED PERIOD OF REPORT:	20200604
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200604
DATE AS OF CHANGE:		20200604

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:		20941895

	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-k2020q2earningsrele.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a8-k2020q2earningsrele.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>ex991-2020q2earningspr.htm <DESCRIPTION>EXHIBIT 99.1 <TEXT> Document 2 - file: ex991-2020q2earningspr.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.2 <SEQUENCE>3 <FILENAME>ex992q220earningspresent.htm <DESCRIPTION>EXHIBIT 99.2 <TEXT> Document 3 - file: ex992q220earningspresent.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>4 <FILENAME>cien-20200605.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 4 - file: cien-20200605.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.CAL <SEQUENCE>5 <FILENAME>cien-20200605_cal.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT <TEXT> Document 5 - file: cien-20200605_cal.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>6 <FILENAME>cien-20200605_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT <TEXT> Document 6 - file: cien-20200605_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>7 <FILENAME>cien-20200605_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT <TEXT> Document 7 - file: cien-20200605_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>8 <FILENAME>cien-20200605_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT <TEXT> Document 8 - file: cien-20200605_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>ex992q220earningspresent001.jpg <TEXT> Document 9 - file: ex992q220earningspresent001.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>ex992q220earningspresent002.jpg <TEXT> Document 10 - file: ex992q220earningspresent002.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>ex992q220earningspresent003.jpg <TEXT> Document 11 - file: ex992q220earningspresent003.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>ex992q220earningspresent004.jpg <TEXT> Document 12 - file: ex992q220earningspresent004.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>ex992q220earningspresent005.jpg <TEXT> Document 13 - file: ex992q220earningspresent005.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>ex992q220earningspresent006.jpg <TEXT> Document 14 - file: ex992q220earningspresent006.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>ex992q220earningspresent007.jpg <TEXT> Document 15 - file: ex992q220earningspresent007.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>ex992q220earningspresent008.jpg <TEXT> Document 16 - file: ex992q220earningspresent008.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>ex992q220earningspresent009.jpg <TEXT> Document 17 - file: ex992q220earningspresent009.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>ex992q220earningspresent010.jpg <TEXT> Document 18 - file: ex992q220earningspresent010.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>ex992q220earningspresent011.jpg <TEXT> Document 19 - file: ex992q220earningspresent011.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>ex992q220earningspresent012.jpg <TEXT> Document 20 - file: ex992q220earningspresent012.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>21 <FILENAME>ex992q220earningspresent013.jpg <TEXT> Document 21 - file: ex992q220earningspresent013.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>ex992q220earningspresent014.jpg <TEXT> Document 22 - file: ex992q220earningspresent014.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>ex992q220earningspresent015.jpg <TEXT> Document 23 - file: ex992q220earningspresent015.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>24 <FILENAME>ex992q220earningspresent016.jpg <TEXT> Document 24 - file: ex992q220earningspresent016.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>25 <FILENAME>ex992q220earningspresent017.jpg <TEXT> Document 25 - file: ex992q220earningspresent017.jpg
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>26 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 26 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>27 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 27 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>28 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 28 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>29 <FILENAME>0000936395-20-000025-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 29 - file: 0000936395-20-000025-xbrl.zip
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>30 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 30 - file: FilingSummary.html
Document 30 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>31 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 31 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>33 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 33 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>34 <FILENAME>a8-k2020q2earningsrele_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 34 - file: a8-k2020q2earningsrele_htm.html
Document 34 - RAW XML: a8-k2020q2earningsrele_htm.xml
</DOCUMENT> </SEC-DOCUMENT>