HK1029675A1 - Optical communication system - Google Patents

Optical communication system

Info

Publication number
HK1029675A1
HK1029675A1 HK00107856A HK00107856A HK1029675A1 HK 1029675 A1 HK1029675 A1 HK 1029675A1 HK 00107856 A HK00107856 A HK 00107856A HK 00107856 A HK00107856 A HK 00107856A HK 1029675 A1 HK1029675 A1 HK 1029675A1
Authority
HK
Hong Kong
Prior art keywords
communication system
optical communication
optical
communication
Prior art date
Application number
HK00107856A
Other languages
English (en)
Inventor
Paul Alexander Callan
David John Maddocks
Original Assignee
Marconi Comm Ltd
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 Marconi Comm Ltd filed Critical Marconi Comm Ltd
Publication of HK1029675A1 publication Critical patent/HK1029675A1/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
    • H04B10/07—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
    • H04B10/0771—Fault location on the transmission path
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/08—Shut-down or eye-safety

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
HK00107856A 1999-03-19 2000-12-07 Optical communication system HK1029675A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9906394A GB2348063B (en) 1999-03-19 1999-03-19 Optical communication system

Publications (1)

Publication Number Publication Date
HK1029675A1 true HK1029675A1 (en) 2001-04-06

Family

ID=10849990

Family Applications (1)

Application Number Title Priority Date Filing Date
HK00107856A HK1029675A1 (en) 1999-03-19 2000-12-07 Optical communication system

Country Status (9)

Country Link
US (1) US6483616B1 (xx)
EP (2) EP1041747A3 (xx)
JP (1) JP4447105B2 (xx)
CN (2) CN1267981A (xx)
AU (1) AU2227200A (xx)
GB (1) GB2348063B (xx)
HK (1) HK1029675A1 (xx)
NO (1) NO20001260L (xx)
RU (1) RU2000106750A (xx)

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US6681079B1 (en) * 2000-05-18 2004-01-20 Nortel Networks Limited Optical fibre monitoring system
SE519731C2 (sv) * 2000-09-29 2003-04-01 Transmode Systems Ab En sändare-mottagareanordning, samt ett kommunikationssystem med övervakning av optisk kommunikation
US6845189B2 (en) 2000-11-15 2005-01-18 Telefonaktiebolaget Lm Ericsson (Publ) System and a method for limiting the maximum of light transmitted from a ribbon fiber
SE517754C2 (sv) * 2000-11-15 2002-07-09 Ericsson Telefon Ab L M Anordning och förfarande för styrning av kommunikationslänkar
GB2369509A (en) * 2000-11-28 2002-05-29 Marconi Comm Ltd Optical shutter for a communication system
JP3768110B2 (ja) * 2001-02-22 2006-04-19 富士通株式会社 光増幅器
US20020181037A1 (en) * 2001-06-01 2002-12-05 Richard Lauder Failure protection switching in optical network
US20030002109A1 (en) * 2001-06-29 2003-01-02 Jim Hochberg Eye safety shutdown
JP4632585B2 (ja) * 2001-07-16 2011-02-16 富士通株式会社 光伝送システム
US7092630B2 (en) * 2001-11-16 2006-08-15 Avago Technologies Fiber Ip(Singapore) Ptd. Ltd. Open fiber control for optical transceivers
US20030113118A1 (en) * 2001-11-28 2003-06-19 Meir Bartur Smart single fiber optic transceiver
US7957643B2 (en) * 2002-03-07 2011-06-07 Alcatel-Lucent Usa Inc. Method and apparatus for automatically controlling optical signal power in optical transmission systems
EP1535425A2 (en) * 2002-04-12 2005-06-01 Thomson Licensing S.A. Control circuit
JP3934529B2 (ja) * 2002-10-30 2007-06-20 富士通株式会社 波長多重光通信システム
JP3898137B2 (ja) 2003-03-06 2007-03-28 富士通株式会社 自動出力復帰方法および光通信システム
CN1305243C (zh) * 2003-05-09 2007-03-14 中兴通讯股份有限公司 密集波分复用系统自动光功率减小进程时间的测试方法和装置
JP4584563B2 (ja) * 2003-10-07 2010-11-24 パイオニア株式会社 光伝送システム
JP4337603B2 (ja) * 2004-03-31 2009-09-30 日本電気株式会社 光伝送システム
IL165958A (en) * 2004-12-23 2010-12-30 Eci Telecom Ltd Method of controlling optical amplifier located along an optical link
US7218442B2 (en) * 2005-03-04 2007-05-15 Jds Uniphase Corporation Optical communications system with fiber break detection in the presence of Raman amplification
GB2425904A (en) * 2005-05-03 2006-11-08 Marconi Comm Gmbh Optical network fault test apparatus which modifies a received test signal using a passive optical device to generate a response signal
CN1874193B (zh) * 2005-06-03 2012-05-23 华为技术有限公司 实现激光安全保护的方法及光放大器、标识信号加载方法
JP4699924B2 (ja) * 2006-03-16 2011-06-15 富士通株式会社 光特性を測定する方法およびシステム
US7630296B2 (en) * 2006-04-14 2009-12-08 Adc Telecommunications, Inc. System and method for remotely restoring inoperative data communications
JP4751934B2 (ja) * 2006-12-28 2011-08-17 富士通株式会社 光伝送装置および光伝送方法
US8032021B2 (en) * 2007-02-28 2011-10-04 Finisar Corporation Status link for multi-channel optical communication systems
US8861952B2 (en) * 2007-02-28 2014-10-14 Finisar Corporation Redundancy and interoperability in multi-channel optoelectronic devices
WO2008134750A2 (en) * 2007-04-30 2008-11-06 Finisar Corporation Eye safety and interoperability of active cable devices
CN101325650B (zh) * 2007-06-11 2010-04-14 青岛海信电器股份有限公司 可兼容多种接入方式的音视频接收设备
US8509624B2 (en) * 2007-11-28 2013-08-13 Cisco Technology, Inc. Transceiver module sleep mode
US9287991B2 (en) 2012-10-17 2016-03-15 Christie Digital Systems Usa, Inc. Light module interlock system
EP2819322B1 (de) * 2013-06-28 2018-04-04 Deutsche Telekom AG Automatisierte Fehlerreaktion bei einem optischen Übertragungssystem
JP6638210B2 (ja) 2015-04-17 2020-01-29 ソニー株式会社 通信装置、通信方法、および通信システム
CN104993871B (zh) * 2015-05-28 2017-11-28 武汉光迅科技股份有限公司 一种新型塔内光中继放大器装置
JP7180298B2 (ja) * 2018-11-13 2022-11-30 日本電信電話株式会社 光伝送システム及び非使用経路確認方法
US11652545B2 (en) * 2020-11-24 2023-05-16 Ciena Corporation Avoiding fiber damage on non-supervisory optical fiber links

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8616873D0 (en) * 1986-07-10 1986-08-20 British Telecomm Optical telecommunications system
JPH02209030A (ja) * 1989-02-09 1990-08-20 Fujitsu Ltd 光伝送回線装置
US4994675A (en) * 1989-04-28 1991-02-19 Rebo Research, Inc. Method and apparatus for checking continuity of optic transmission
US5136410A (en) * 1990-01-09 1992-08-04 Ibm Corporation Optical fiber link control safety system
US5019769A (en) * 1990-09-14 1991-05-28 Finisar Corporation Semiconductor laser diode controller and laser diode biasing control method
US5428471A (en) * 1992-07-30 1995-06-27 Alcatel Network Systems, Inc. Fail-safe automatic shut-down apparatus and method for high output power optical communications system
US5335104A (en) * 1992-10-22 1994-08-02 Laser Precision Corp. Method of detecting breaks in multi-drop feeder systems
GB2292495B (en) * 1994-08-17 1998-03-25 Northern Telecom Ltd Fault location in optical communication systems
JP2682517B2 (ja) * 1995-07-26 1997-11-26 日本電気株式会社 光出力遮断システム
US5790293A (en) * 1995-10-27 1998-08-04 Lucent Technologies Inc. Systems for monitoring optical path characteristics in an optical communication system
US6452701B1 (en) * 1997-03-19 2002-09-17 Fujitsu Limited Wavelength division multiplexing communications network supervisory system
US6359708B1 (en) * 1997-09-18 2002-03-19 Lucent Technologies Inc. Optical transmission line automatic power reduction system

Also Published As

Publication number Publication date
US6483616B1 (en) 2002-11-19
EP2271005A1 (en) 2011-01-05
JP4447105B2 (ja) 2010-04-07
EP1041747A2 (en) 2000-10-04
CN1267981A (zh) 2000-09-27
RU2000106750A (ru) 2002-01-20
GB9906394D0 (en) 1999-05-12
CN101521542A (zh) 2009-09-02
CN101521542B (zh) 2016-01-06
AU2227200A (en) 2000-09-21
NO20001260D0 (no) 2000-03-10
GB2348063B (en) 2001-03-07
NO20001260L (no) 2000-09-13
EP2271005B1 (en) 2018-04-11
GB2348063A (en) 2000-09-20
JP2000286798A (ja) 2000-10-13
EP1041747A3 (en) 2003-08-13

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Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20190318