CA2394163A1 - Optical ring protection apparatus and methods - Google Patents

Optical ring protection apparatus and methods Download PDF

Info

Publication number
CA2394163A1
CA2394163A1 CA002394163A CA2394163A CA2394163A1 CA 2394163 A1 CA2394163 A1 CA 2394163A1 CA 002394163 A CA002394163 A CA 002394163A CA 2394163 A CA2394163 A CA 2394163A CA 2394163 A1 CA2394163 A1 CA 2394163A1
Authority
CA
Canada
Prior art keywords
optical
signal
wavelength
outputting
coupler
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002394163A
Other languages
French (fr)
Other versions
CA2394163C (en
Inventor
Ornan A. Gerstel
Rajiv R. Ramaswami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coriant Operations Inc
Original Assignee
Ornan A. Gerstel
Rajiv R. Ramaswami
Tellabs Operations, Inc.
Coriant Operations, Inc.
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
Priority claimed from US09/459,947 external-priority patent/US6898376B1/en
Application filed by Ornan A. Gerstel, Rajiv R. Ramaswami, Tellabs Operations, Inc., Coriant Operations, Inc. filed Critical Ornan A. Gerstel
Publication of CA2394163A1 publication Critical patent/CA2394163A1/en
Application granted granted Critical
Publication of CA2394163C publication Critical patent/CA2394163C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0289—Optical multiplex section protection
    • H04J14/029—Dedicated protection at the optical multiplex section (1+1)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0283—WDM ring architectures

Abstract

A wavelength division multiplexed optical communication system protects against light path failure on a per wavelength basis. At the source optical node an output device outputs first and second multiple wavelength signals on respective first and second light paths. At the sink optical node a first demultiplexer demultiplexes the first multiple wavelength signal into separate wavelengths, and a second demultiplexer demultiplexes the second multiple wavelength signal into separate wavelengths. For each wavelength signal the sink optical node includes transponders and coupler. The coupler has inputs connected to the respective outputs of the first and second transponders, and an output for outputting an optical signal received at one of the first and second inputs.
A controller determines if the first transponder is outputting the first optical signal. Inhibiting from outputting the second optical signal. If not, the second transponder is not inhibited and the coupler outputs the second optical signal.
CA002394163A 1999-12-14 2000-12-14 Optical ring protection apparatus and methods Expired - Lifetime CA2394163C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/459,947 US6898376B1 (en) 1998-12-14 1999-12-14 Optical ring protection apparatus and methods
US09/459,947 1999-12-14
PCT/US2000/033720 WO2001045311A1 (en) 1999-12-14 2000-12-14 Optical ring protection apparatus and methods

Publications (2)

Publication Number Publication Date
CA2394163A1 true CA2394163A1 (en) 2001-06-21
CA2394163C CA2394163C (en) 2009-03-10

Family

ID=23826804

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002394163A Expired - Lifetime CA2394163C (en) 1999-12-14 2000-12-14 Optical ring protection apparatus and methods

Country Status (3)

Country Link
AU (1) AU2092101A (en)
CA (1) CA2394163C (en)
WO (1) WO2001045311A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7421197B2 (en) * 2003-01-21 2008-09-02 Fujitsu Limited Optical network protection switching architecture
WO2013084848A1 (en) * 2011-12-06 2013-06-13 日清オイリオグループ株式会社 Emulsified liquid seasoning
GB2586807B (en) * 2019-09-03 2023-07-19 Bae Systems Plc Vehicle control
US11716147B2 (en) 2020-08-10 2023-08-01 Solid, Inc. Optical communication device and optical communication system including the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212578A (en) * 1991-10-02 1993-05-18 At&T Bell Laboratories Selection of transmission facilities using optical wavelength division multiplexing
JP3123633B2 (en) * 1993-09-22 2001-01-15 日本電信電話株式会社 1: n communication transmission method
US5889610A (en) * 1996-12-31 1999-03-30 Lucent Technologies Inc. Optical protection switching system
JP3013799B2 (en) * 1997-01-28 2000-02-28 日本電気株式会社 Transmitter and receiver for WDM optical transmission

Also Published As

Publication number Publication date
AU2092101A (en) 2001-06-25
CA2394163C (en) 2009-03-10
WO2001045311A1 (en) 2001-06-21

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Effective date: 20201214