<SEC-DOCUMENT>0001193125-15-236883-index.html : 20150626
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<ACCEPTANCE-DATETIME>20150626144042
ACCESSION NUMBER:		0001193125-15-236883
CONFORMED SUBMISSION TYPE:	S-4/A
PUBLIC DOCUMENT COUNT:		21
FILED AS OF DATE:		20150626
DATE AS OF CHANGE:		20150626

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:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-204732
		FILM NUMBER:		15954627

	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
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<FILENAME>d933391ds4a.htm
<DESCRIPTION>FORM S-4/A
<TEXT>
Document 1 - file: d933391ds4a.htm

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<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d933391dex51.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: d933391dex51.htm

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<DOCUMENT>
<TYPE>EX-8.1
<SEQUENCE>3
<FILENAME>d933391dex81.htm
<DESCRIPTION>EXHIBIT 8.1
<TEXT>
Document 3 - file: d933391dex81.htm

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<DOCUMENT>
<TYPE>EX-8.2
<SEQUENCE>4
<FILENAME>d933391dex82.htm
<DESCRIPTION>EXHIBIT 8.2
<TEXT>
Document 4 - file: d933391dex82.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.4
<SEQUENCE>5
<FILENAME>d933391dex234.htm
<DESCRIPTION>EXHIBIT 23.4
<TEXT>
Document 5 - file: d933391dex234.htm

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<TYPE>EX-23.5
<SEQUENCE>6
<FILENAME>d933391dex235.htm
<DESCRIPTION>EXHIBIT 23.5
<TEXT>
Document 6 - file: d933391dex235.htm

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<TYPE>EX-99.1
<SEQUENCE>7
<FILENAME>d933391dex991.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 7 - file: d933391dex991.htm

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<TYPE>EX-99.3
<SEQUENCE>8
<FILENAME>d933391dex993.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
Document 8 - file: d933391dex993.htm

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<FILENAME>g93339102.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g93339102.jpg

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<FILENAME>g93339103.jpg
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<TEXT>
Document 10 - file: g93339103.jpg

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Document 11 - file: g93339104.jpg

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<FILENAME>g93339105.jpg
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<TEXT>
Document 12 - file: g93339105.jpg

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Document 13 - file: g93339106.jpg

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Document 14 - file: g933391g07u53.jpg

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<TEXT>
Document 15 - file: g933391g11t89.jpg

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Document 16 - file: g933391g22u28.jpg

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Document 17 - file: g933391g33i22.jpg

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Document 18 - file: g933391g37p40.jpg

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Document 19 - file: g933391g41l31.jpg

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<FILENAME>g933391g83c70.jpg
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Document 20 - file: g933391g83c70.jpg

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Document 21 - file: g933391img2_page2.jpg

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