<SEC-DOCUMENT>0000914208-17-000166-index.html : 20170207
<SEC-HEADER>0000914208-17-000166.hdr.sgml : 20170207
<ACCEPTANCE-DATETIME>20170207150127
ACCESSION NUMBER:		0000914208-17-000166
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170207
DATE AS OF CHANGE:		20170207

SUBJECT COMPANY:	

	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:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-54195
		FILM NUMBER:		17578654

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Invesco Ltd.
		CENTRAL INDEX KEY:			0000914208
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		IRS NUMBER:				980557567
		STATE OF INCORPORATION:			D0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1555 PEACHTREE STREET NE
		STREET 2:		SUITE 1800
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309
		BUSINESS PHONE:		404-892-0896

	MAIL ADDRESS:	
		STREET 1:		1555 PEACHTREE STREET NE
		STREET 2:		SUITE 1800
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Invesco Ltd
		DATE OF NAME CHANGE:	20080508

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Invesco PLC
		DATE OF NAME CHANGE:	20080429

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Invesco Ltd.
		DATE OF NAME CHANGE:	20071205
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>SEC13G_Filing.htm
<DESCRIPTION>SEC SCHEDULE 13G
<TEXT>
Document 1 - file: SEC13G_Filing.htm

</DOCUMENT>
</SEC-DOCUMENT>