HK135596A - Loss detection - Google Patents

Loss detection

Info

Publication number
HK135596A
HK135596A HK135596A HK135596A HK135596A HK 135596 A HK135596 A HK 135596A HK 135596 A HK135596 A HK 135596A HK 135596 A HK135596 A HK 135596A HK 135596 A HK135596 A HK 135596A
Authority
HK
Hong Kong
Prior art keywords
loss detection
loss
detection
Prior art date
Application number
HK135596A
Other languages
English (en)
Inventor
Peter John Keeble
Original Assignee
British Telecomm
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 British Telecomm filed Critical British Telecomm
Publication of HK135596A publication Critical patent/HK135596A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3136—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR for testing of multiple fibers
    • 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
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Glass Compositions (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
HK135596A 1988-12-06 1996-07-25 Loss detection HK135596A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888828408A GB8828408D0 (en) 1988-12-06 1988-12-06 Loss detector
PCT/GB1989/001454 WO1990006498A2 (en) 1988-12-06 1989-12-05 Loss detection

Publications (1)

Publication Number Publication Date
HK135596A true HK135596A (en) 1996-08-02

Family

ID=10647997

Family Applications (1)

Application Number Title Priority Date Filing Date
HK135596A HK135596A (en) 1988-12-06 1996-07-25 Loss detection

Country Status (12)

Country Link
US (1) US5187362A (de)
EP (1) EP0447439B1 (de)
JP (1) JP2856904B2 (de)
AU (1) AU617913B2 (de)
CA (1) CA2004674C (de)
DE (1) DE68910695T2 (de)
DK (1) DK106891A (de)
ES (1) ES2046775T3 (de)
GB (1) GB8828408D0 (de)
HK (1) HK135596A (de)
NZ (1) NZ231638A (de)
WO (1) WO1990006498A2 (de)

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JP3402083B2 (ja) * 1996-08-05 2003-04-28 Ｋｄｄｉ株式会社 光ファイバ線路の障害位置検出装置
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JP3439323B2 (ja) 1997-06-18 2003-08-25 安藤電気株式会社 多段多分岐光線路の試験装置
EP0936457B1 (de) * 1998-02-16 2000-12-20 Hewlett-Packard Company Lokalisierung von Fehlern in faseroptischen Systemen
CN1174566C (zh) * 1998-02-23 2004-11-03 住友电气工业株式会社 分支线路监视系统和分支线路监视方法
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JP4055306B2 (ja) * 1999-11-08 2008-03-05 富士通株式会社 伝送路の障害検出装置及び方法
FR2844051B1 (fr) * 2002-08-30 2004-11-12 Nexans Systeme pour le controle par reflectometrie dans le domaine temporel (otdr) d'un reseau optique
EP1462788A1 (de) 2003-03-28 2004-09-29 Agilent Technologies Inc. a Delaware Corporation Messung bidirektionaler optischen Verluste
US7667849B2 (en) * 2003-09-30 2010-02-23 British Telecommunications Public Limited Company Optical sensor with interferometer for sensing external physical disturbance of optical communications link
GB0322859D0 (en) * 2003-09-30 2003-10-29 British Telecomm Communication
GB0407386D0 (en) * 2004-03-31 2004-05-05 British Telecomm Monitoring a communications link
KR100593607B1 (ko) * 2004-05-13 2006-06-28 학교법인 동국대학교 강유전 반도체 물질을 포함하는 비휘발성 반도체 메모리소자 및 그 반도체 메모리 소자의 데이터 기입, 소거 및판독 방법
US7280189B2 (en) * 2004-07-08 2007-10-09 Weller Whitney T Method and apparatus for testing optical fiber based networks
US20060007426A1 (en) * 2004-07-08 2006-01-12 Weller Whitney T Novel Algorithm, Method and apparatus for In-Service Testing of Passive Optical Networks (PON) and Fiber to the Premise (FTTP) Networks
US7493040B1 (en) * 2004-07-15 2009-02-17 Nortel Networks Limited Method and apparatus for securing fiber in an optical network
US7848645B2 (en) * 2004-09-30 2010-12-07 British Telecommunications Public Limited Company Identifying or locating waveguides
GB0421747D0 (en) * 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
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GB0504579D0 (en) * 2005-03-04 2005-04-13 British Telecomm Communications system
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WO2006109693A1 (ja) * 2005-04-08 2006-10-19 Eisai R & D Management Co., Ltd. 粘性試料のサンプリング器具、喀痰の均質化処理方法及び微生物の検出方法
EP1713301A1 (de) * 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Verfahren und Gerät zur Schallübertragung über eine optische Verbindung
EP1729096A1 (de) * 2005-06-02 2006-12-06 BRITISH TELECOMMUNICATIONS public limited company Verfahren und Vorrichtung zur Ermittlung der Stelle einer Störung in einer optischen Faser
GB0514680D0 (en) * 2005-07-16 2005-08-24 Tyco Electronics Raychem Nv PCB optical network monitor
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US20070154215A1 (en) * 2006-01-05 2007-07-05 Tellabs Bedford, Inc. Method and apparatus for detecting optical reflections in an optical network
EP1826924A1 (de) * 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Abtastung einer Störung
US8027584B2 (en) * 2006-02-24 2011-09-27 British Telecommunications Public Limited Company Sensing a disturbance
WO2007096579A1 (en) * 2006-02-24 2007-08-30 British Telecommunications Public Limited Company Sensing a disturbance
US8670662B2 (en) * 2006-04-03 2014-03-11 British Telecommunications Public Limited Company Evaluating the position of an optical fiber disturbance
JP2011518523A (ja) * 2008-04-21 2011-06-23 オプリンク コミュニケーションズ， インコーポレイテッド ファイバネットワーク監視
JP5463360B2 (ja) * 2008-10-17 2014-04-09 エクスフォ インコーポレイティッド ２波長ｏｔｄｒを使用する光学ネットワーク内の光路および波長依存性反射要素のパラメータを導出する方法および装置
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CN102118658B (zh) * 2009-12-31 2014-02-19 华为技术有限公司 分光器端口识别的方法和装置
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GB2499386A (en) * 2012-02-10 2013-08-21 United Technologists Europe Ltd OTDR Mapping Method using an optical reflector at a specific customer fibre end to increase the amplitude relative to other reflection events in the trace
CN102721646B (zh) * 2012-06-28 2014-06-25 中国计量学院 远距离挥发性有机物多点检测传感装置
CN102868447B (zh) * 2012-09-24 2015-07-15 深圳太辰光通信股份有限公司 一种光纤光栅追踪器与光纤线路故障检测方法
JP6085573B2 (ja) * 2014-01-14 2017-02-22 日本電信電話株式会社 分岐光線路の特性解析装置および分岐光線路の特性解析方法
EP3100377B1 (de) * 2014-01-31 2019-10-16 AFL Telecommunications LLC Mapping von langen faserabschnitten mit hohem verlust
AT515815B1 (de) * 2014-06-12 2017-05-15 Fachhochschule Technikum Wien Verfahren und Vorrichtung zur Detektion von Abhörversuchen bei optischer Freiraum Datenübertragung
CN104113373A (zh) * 2014-07-22 2014-10-22 桂林聚联科技有限公司 一种判断光纤连接点状态的方法
US9240836B1 (en) * 2014-08-08 2016-01-19 Verizon Patent And Licensing Inc. OTDR fault tracing in optical networks
JP5811259B2 (ja) * 2014-12-24 2015-11-11 住友電気工業株式会社 光線路監視システム
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CN112491465A (zh) * 2019-08-23 2021-03-12 中兴通讯股份有限公司 光纤线路检测控制方法、装置、设备及可读存储介质
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Also Published As

Publication number Publication date
CA2004674A1 (en) 1990-06-06
EP0447439A1 (de) 1991-09-25
JP2856904B2 (ja) 1999-02-10
CA2004674C (en) 1997-03-04
AU617913B2 (en) 1991-12-05
US5187362A (en) 1993-02-16
JPH04502210A (ja) 1992-04-16
WO1990006498A3 (en) 1990-09-07
ES2046775T3 (es) 1994-02-01
WO1990006498A2 (en) 1990-06-14
EP0447439B1 (de) 1993-11-10
DK106891D0 (da) 1991-06-04
AU4751090A (en) 1990-06-26
GB8828408D0 (en) 1989-01-05
DE68910695D1 (de) 1993-12-16
NZ231638A (en) 1992-02-25
DK106891A (da) 1991-06-04
DE68910695T2 (de) 1994-05-05

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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)