AU6525796A - Optical communications system - Google Patents

Optical communications system

Info

Publication number
AU6525796A
AU6525796A AU65257/96A AU6525796A AU6525796A AU 6525796 A AU6525796 A AU 6525796A AU 65257/96 A AU65257/96 A AU 65257/96A AU 6525796 A AU6525796 A AU 6525796A AU 6525796 A AU6525796 A AU 6525796A
Authority
AU
Australia
Prior art keywords
communications system
optical communications
optical
communications
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.)
Abandoned
Application number
AU65257/96A
Inventor
Robert John Campbell
Jennifer Frances Massicott
Richard Wyatt
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 GBGB9600375.1A external-priority patent/GB9600375D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of AU6525796A publication Critical patent/AU6525796A/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • 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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal
    • H04B2210/078—Monitoring an optical transmission system using a supervisory signal using a separate wavelength
AU65257/96A 1995-07-18 1996-07-18 Optical communications system Abandoned AU6525796A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP95304992 1995-07-18
EP95304992 1995-07-18
GB9600375 1996-01-09
GBGB9600375.1A GB9600375D0 (en) 1996-01-09 1996-01-09 Optical telecommunications system
PCT/GB1996/001727 WO1997004539A1 (en) 1995-07-18 1996-07-18 Optical communications system

Publications (1)

Publication Number Publication Date
AU6525796A true AU6525796A (en) 1997-02-18

Family

ID=26140262

Family Applications (1)

Application Number Title Priority Date Filing Date
AU65257/96A Abandoned AU6525796A (en) 1995-07-18 1996-07-18 Optical communications system

Country Status (3)

Country Link
EP (1) EP0839414A1 (en)
AU (1) AU6525796A (en)
WO (1) WO1997004539A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0964487B1 (en) * 1997-02-25 2008-09-03 Hitachi, Ltd. Optical cross connection device
DE69840123D1 (en) * 1997-05-27 2008-11-27 Ciena Corp SYSTEM FOR SPANNING MANAGEMENT FOR A WAVE LENGTHULTIPLEX NETWORK
US6275331B1 (en) * 1999-06-30 2001-08-14 Nortel Networks Limited Optical amplifiers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229876A (en) * 1990-03-26 1993-07-20 At&T Bell Laboratories Telemetry for optical fiber amplifier repeater

Also Published As

Publication number Publication date
WO1997004539A1 (en) 1997-02-06
EP0839414A1 (en) 1998-05-06

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