HK33696A - Fail-safe optical transmission system - Google Patents

Fail-safe optical transmission system

Info

Publication number
HK33696A
HK33696A HK33696A HK33696A HK33696A HK 33696 A HK33696 A HK 33696A HK 33696 A HK33696 A HK 33696A HK 33696 A HK33696 A HK 33696A HK 33696 A HK33696 A HK 33696A
Authority
HK
Hong Kong
Prior art keywords
fail
transmission system
optical transmission
safe optical
safe
Prior art date
Application number
HK33696A
Other languages
English (en)
Inventor
Mohammad T Fatehi
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
Publication of HK33696A publication Critical patent/HK33696A/xx

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
    • H04B10/27—Arrangements for networking
    • 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
    • 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
    • H04B10/25—Arrangements specific to fibre transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)
HK33696A 1988-11-10 1996-02-29 Fail-safe optical transmission system HK33696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/269,289 US4878726A (en) 1988-11-10 1988-11-10 Optical transmission system

Publications (1)

Publication Number Publication Date
HK33696A true HK33696A (en) 1996-03-08

Family

ID=23026626

Family Applications (1)

Application Number Title Priority Date Filing Date
HK33696A HK33696A (en) 1988-11-10 1996-02-29 Fail-safe optical transmission system

Country Status (8)

Country Link
US (1) US4878726A (ja)
EP (1) EP0372711B1 (ja)
JP (1) JPH0744498B2 (ja)
KR (1) KR0139543B1 (ja)
CA (1) CA1293998C (ja)
DE (1) DE68923853T2 (ja)
ES (1) ES2075852T3 (ja)
HK (1) HK33696A (ja)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1238032B (it) * 1990-01-30 1993-06-23 Pirelli Cavi Spa Linea di telecomunicazione a fibre ottiche con canali separati di servizio
US5253935A (en) * 1990-05-04 1993-10-19 Raychem Corporation Couples for terminating optical fiber ends
US5317440A (en) * 1990-05-21 1994-05-31 Hughes Aircraft Company Single wavelength bidirectional optical fiber communication link
US5005936A (en) * 1990-05-22 1991-04-09 Hughes Aircraft Company Long range bidirectional optical fiber communication link
US5214728A (en) * 1990-06-19 1993-05-25 Sumitomo Electric Industries, Ltd. Light communication system
US5105293A (en) * 1990-10-02 1992-04-14 At&T Bell Laboratories Differential optical signal transmission using a single optical fiber
CA2057264C (en) * 1991-02-15 1995-09-26 Hai-Pin Hsu Amplifier for optical fiber communication link
JP2628950B2 (ja) * 1991-10-07 1997-07-09 株式会社日立製作所 携帯電話システムにおける位置登録方法
US5317658A (en) * 1992-04-06 1994-05-31 At&T Bell Laboratories Apparatus and method for providing a polarization independent optical switch
DE4430512C2 (de) * 1994-08-27 2000-06-29 Bosch Gmbh Robert Vorrichtung zum Beschalten einer verstärkenden Faser
US5907418A (en) * 1995-08-09 1999-05-25 Motorola, Inc. Apparatus for infrared channel and method therefor
WO1999018679A1 (en) * 1997-10-06 1999-04-15 Dsc Communications A/S An optical network with protection path for failure recovery
GB9919580D0 (en) 1999-08-18 1999-10-20 Cit Alcatel A landing stage for a submarine communications system
US7324500B1 (en) * 2000-10-31 2008-01-29 Jeremy Benjamin As Receiver For Chiaro Networks Ltd. Router network protection using multiple facility interfaces
DE10144907A1 (de) 2001-09-12 2003-04-03 Infineon Technologies Ag Sendeanordnung, insbesondere für den Mobilfunk
EP1296468A1 (en) * 2001-09-24 2003-03-26 Alcatel Modulation method and bit error detection in optical transmission systems
JP2003224872A (ja) * 2002-01-30 2003-08-08 Hitachi Ltd 光切替装置、光伝送システムおよび光信号経路の設定方法
US7171116B2 (en) * 2002-09-17 2007-01-30 Lucent Technologies Inc. Provisionable keep-alive signal for physical-layer protection of an optical network
US7366424B2 (en) * 2003-08-20 2008-04-29 Lucent Technologies Inc. Methods and apparatus for producing transmission failure protected, bridged, and dispersion resistant signals
US7966294B1 (en) * 2004-01-08 2011-06-21 Netapp, Inc. User interface system for a clustered storage system
US7406135B2 (en) * 2004-06-22 2008-07-29 International Business Machines Corporation Reducing power consumption in signal detection
US7409163B2 (en) * 2004-06-30 2008-08-05 Lucent Technologies Inc. Method and apparatus for optical signal transmission
US20080212968A1 (en) * 2005-06-03 2008-09-04 The Commonwealth Of Australia Photonic Link With Improved Dynamic Range
TW200827797A (en) * 2006-12-20 2008-07-01 Inventec Multimedia & Telecom Switching device of light-beam channel of optical fiber network
US8068742B2 (en) * 2008-07-10 2011-11-29 Finisar Corporation Phase shift keyed modulation of optical signal using chirp managed laser
EP2717168B1 (en) * 2012-10-05 2017-08-09 General Electric Technology GmbH Networks and method for reliable transfer of information between industrial systems
CN105531946B (zh) * 2013-12-23 2018-01-19 华为技术有限公司 一种光差分信号的发送和接收方法、装置和系统
US11494541B2 (en) * 2020-01-16 2022-11-08 Lightmatter, Inc. Pin sharing for photonic processors
US20220318365A1 (en) * 2021-04-05 2022-10-06 X Development Llc Metastructured photonic device authentication

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797741A (en) * 1980-12-10 1982-06-17 Fujitsu Ltd Optical transmission device with light distributing function
JPS59151543A (ja) * 1983-02-08 1984-08-30 Toshiba Corp 光通信方式
DE3335156A1 (de) * 1983-09-28 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Verfahren zur erkennung des ausfalls eines oder mehrerer uebertragungskanaele in einem redundant ausgelegten optischen uebertragungssystem
JPS6212221A (ja) * 1985-07-10 1987-01-21 Fujitsu Ltd 光伝送方式
US4705350A (en) * 1985-09-19 1987-11-10 Bell Communications Research, Inc. Optical transmission network
JPH0626326B2 (ja) * 1985-10-25 1994-04-06 富士通株式会社 光分配方式
US4755016A (en) * 1985-11-06 1988-07-05 American Telephone And Telegraph Company At&T Bell Laboratories Coherent lightwave transmitters
GB2192272B (en) * 1986-07-02 1990-06-06 Cossor Electronics Ltd Spectrum analyser
JPH01123538A (ja) * 1987-11-07 1989-05-16 Nec Corp 光平衡伝送回路

Also Published As

Publication number Publication date
KR900008794A (ko) 1990-06-04
ES2075852T3 (es) 1995-10-16
EP0372711B1 (en) 1995-08-16
DE68923853T2 (de) 1996-05-02
JPH0744498B2 (ja) 1995-05-15
KR0139543B1 (ko) 1998-07-01
EP0372711A3 (en) 1991-11-27
DE68923853D1 (de) 1995-09-21
US4878726A (en) 1989-11-07
JPH02230220A (ja) 1990-09-12
CA1293998C (en) 1992-01-07
EP0372711A2 (en) 1990-06-13

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)