<SEC-DOCUMENT>0000930413-15-000555-index.html : 20150212
<SEC-HEADER>0000930413-15-000555.hdr.sgml : 20150212
<ACCEPTANCE-DATETIME>20150212121135
ACCESSION NUMBER:		0000930413-15-000555
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150212
DATE AS OF CHANGE:		20150212

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
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-54195
		FILM NUMBER:		15604310

	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:			TEACHERS ADVISORS INC
		CENTRAL INDEX KEY:			0000939222
		IRS NUMBER:				133760073
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		730 THIRD AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017-3206
		BUSINESS PHONE:		2129166042

	MAIL ADDRESS:	
		STREET 1:		730 THIRD AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017-3206
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>c80233_sc13g.htm
<TEXT>
Document 1 - file: c80233_sc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>