WO2001058204A3 - Transparent optical switch - Google Patents

Transparent optical switch Download PDF

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Publication number
WO2001058204A3
WO2001058204A3 PCT/US2001/003501 US0103501W WO0158204A3 WO 2001058204 A3 WO2001058204 A3 WO 2001058204A3 US 0103501 W US0103501 W US 0103501W WO 0158204 A3 WO0158204 A3 WO 0158204A3
Authority
WO
WIPO (PCT)
Prior art keywords
switch
optical
signal
injected
extracted
Prior art date
Application number
PCT/US2001/003501
Other languages
French (fr)
Other versions
WO2001058204A2 (en
Inventor
Sid Chaudhuri
Evan L Goldstein
Original Assignee
At & T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by At & T Corp filed Critical At & T Corp
Priority to AT01906938T priority Critical patent/ATE503353T1/en
Priority to JP2001557326A priority patent/JP3808369B2/en
Priority to EP01906938A priority patent/EP1252793B1/en
Priority to CA2369455A priority patent/CA2369455C/en
Priority to DE60144272T priority patent/DE60144272D1/en
Publication of WO2001058204A2 publication Critical patent/WO2001058204A2/en
Publication of WO2001058204A3 publication Critical patent/WO2001058204A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0206—Express channels arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
    • H04Q1/22—Automatic arrangements
    • H04Q1/24—Automatic arrangements for connection devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0057—Operations, administration and maintenance [OAM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5625—Operations, administration and maintenance [OAM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5628—Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0016—Construction using wavelength multiplexing or demultiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0024—Construction using space switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0033—Construction using time division switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0037—Operation
    • H04Q2011/0043—Fault tolerance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring

Abstract

A transparent optical switch includes network management and performance monitoring using bit level information obtained by extracting selected information on a polling basis and analyzing the extracted information in the electrical domain. In one embodiment, a signal is injected into the switch fabric of the switch via a demultiplexing device. The injected signal is extracted at the output of the switching fabric via an N:1 switch and analyzed by a signal analyzer to verify input to output connections. In another embodiment, an optical switch includes first and second switch fabrics for 1:2 broadcast capability. In a further embodiment, an optical communication system includes a plurality of optical networks and a plurality of optical switches that cooperate to generate unequipped signals and to obtain autonomously switch-to-switch port connectivity information required for auto-topology discovery.
PCT/US2001/003501 2000-02-04 2001-02-02 Transparent optical switch WO2001058204A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT01906938T ATE503353T1 (en) 2000-02-04 2001-02-02 TRANSPARENT OPTICAL COUPLING FIELD
JP2001557326A JP3808369B2 (en) 2000-02-04 2001-02-02 Transparent optical switch
EP01906938A EP1252793B1 (en) 2000-02-04 2001-02-02 Transparent optical switch
CA2369455A CA2369455C (en) 2000-02-04 2001-02-02 Transparent optical switch
DE60144272T DE60144272D1 (en) 2000-02-04 2001-02-02 TRANSPARENT OPTICAL COUPLING FIELD

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US18034700P 2000-02-04 2000-02-04
US60/180,347 2000-02-04
US09/775,429 US6862380B2 (en) 2000-02-04 2001-02-01 Transparent optical switch
US09/775,429 2001-02-01

Publications (2)

Publication Number Publication Date
WO2001058204A2 WO2001058204A2 (en) 2001-08-09
WO2001058204A3 true WO2001058204A3 (en) 2002-03-21

Family

ID=26876217

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/003501 WO2001058204A2 (en) 2000-02-04 2001-02-02 Transparent optical switch

Country Status (7)

Country Link
US (4) US6862380B2 (en)
EP (1) EP1252793B1 (en)
JP (3) JP3808369B2 (en)
AT (1) ATE503353T1 (en)
CA (1) CA2369455C (en)
DE (1) DE60144272D1 (en)
WO (1) WO2001058204A2 (en)

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Also Published As

Publication number Publication date
JP2003526972A (en) 2003-09-09
EP1252793A2 (en) 2002-10-30
CA2369455C (en) 2010-07-06
US7158696B2 (en) 2007-01-02
JP3808369B2 (en) 2006-08-09
US20050008284A1 (en) 2005-01-13
WO2001058204A2 (en) 2001-08-09
US20060029327A1 (en) 2006-02-09
US6862380B2 (en) 2005-03-01
JP4157102B2 (en) 2008-09-24
US7167611B2 (en) 2007-01-23
JP2005184856A (en) 2005-07-07
DE60144272D1 (en) 2011-05-05
JP4157101B2 (en) 2008-09-24
EP1252793B1 (en) 2011-03-23
CA2369455A1 (en) 2001-08-09
US20050157977A1 (en) 2005-07-21
JP2005223901A (en) 2005-08-18
US20070122149A1 (en) 2007-05-31
ATE503353T1 (en) 2011-04-15

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