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FI901529A7 - Optisten kuitujen linkkien koestus - Google Patents

Optisten kuitujen linkkien koestus Download PDF

Info

Publication number
FI901529A7
FI901529A7 FI901529A FI901529A FI901529A7 FI 901529 A7 FI901529 A7 FI 901529A7 FI 901529 A FI901529 A FI 901529A FI 901529 A FI901529 A FI 901529A FI 901529 A7 FI901529 A7 FI 901529A7
Authority
FI
Finland
Prior art keywords
testing
optical fiber
fiber links
links
optical
Prior art date
Application number
FI901529A
Other languages
English (en)
Swedish (sv)
Other versions
FI901529A0 (fi
Inventor
Sover Wing Sau Wong
Original Assignee
Gpt 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 Gpt Ltd filed Critical Gpt Ltd
Publication of FI901529A0 publication Critical patent/FI901529A0/fi
Publication of FI901529A7 publication Critical patent/FI901529A7/fi

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
    • H04B10/071—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]
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
FI901529A 1989-03-28 1990-03-27 Optisten kuitujen linkkien koestus FI901529A7 (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898906937A GB8906937D0 (en) 1989-03-28 1989-03-28 Testing optical fibre links

Publications (2)

Publication Number Publication Date
FI901529A0 FI901529A0 (fi) 1990-03-27
FI901529A7 true FI901529A7 (fi) 1990-09-29

Family

ID=10654039

Family Applications (1)

Application Number Title Priority Date Filing Date
FI901529A FI901529A7 (fi) 1989-03-28 1990-03-27 Optisten kuitujen linkkien koestus

Country Status (9)

Country Link
US (1) US5077729A (fi)
EP (1) EP0390320A3 (fi)
JP (1) JPH03113930A (fi)
CN (1) CN1020229C (fi)
AU (1) AU627853B2 (fi)
CA (1) CA2010908A1 (fi)
FI (1) FI901529A7 (fi)
GB (2) GB8906937D0 (fi)
PT (1) PT93591A (fi)

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Publication number Priority date Publication date Assignee Title
GB8918862D0 (en) * 1989-08-18 1989-09-27 British Telecomm Line monitoring system
JPH06502971A (ja) * 1990-11-22 1994-03-31 ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 試験装置
IT1244150B (it) * 1990-11-22 1994-07-08 Face Standard Spa Alcatel Metodo per misurazione di distanze e stazione trasmittente e ricevente per realizzare tale metodo.
AU1234092A (en) * 1990-12-17 1992-07-22 Aster Corporation Optical communication monitoring and control
JP2804633B2 (ja) * 1991-02-12 1998-09-30 日本電信電話株式会社 光折り返し／媒体試験器
DE4109683A1 (de) * 1991-03-23 1992-09-24 Standard Elektrik Lorenz Ag System fuer optische signaluebertragung, insbesondere optisches kabelfernsehsystem, mit ueberwachungs- und dienstkanaleinrichtung
FR2675650B1 (fr) * 1991-04-16 1994-10-07 Alcatel Cable Installation de transmission a liaison optique telesurveillee.
US5212578A (en) * 1991-10-02 1993-05-18 At&T Bell Laboratories Selection of transmission facilities using optical wavelength division multiplexing
GB9121226D0 (en) * 1991-10-04 1991-11-20 British Telecomm Monitoring system
DE69328294T2 (de) * 1992-02-07 2000-12-28 Marconi Communications Ltd., Coventry Optisches ubertragungsnetzwerk
SE518622C2 (sv) * 1992-07-03 2002-10-29 Ericsson Telefon Ab L M Förfarande och anordning för övervakning av förgrenade optiska ledningsnät
US5299044A (en) * 1992-08-24 1994-03-29 At&T Bell Laboratories Ranging method for use in TDMA systems on tree-and-branch optical networks
JPH0795161A (ja) * 1993-09-20 1995-04-07 Fujitsu Ltd 光増幅中継伝送システム
DE4332501A1 (de) * 1993-09-24 1995-03-30 Siemens Ag Sensorsystem für sich dynamisch ändernde Meßgrößen und zugehöriges Betriebsverfahren
US5552881A (en) * 1994-03-17 1996-09-03 Teradyne, Inc. Method and apparatus for scanning a fiber optic network
IT1274680B (it) * 1994-07-29 1997-07-24 Nicotra Sistemi Dispositivo di comando ottico di tipo modulare per il monitoraggio di cavi a fibre ottiche
JP3006670B2 (ja) * 1995-08-18 2000-02-07 日本電気株式会社 光海底分岐装置およびその伝送路切替方法
US5684949A (en) * 1995-10-13 1997-11-04 Pitney Bowes Inc. Method and system for securing operation of a printing module
JPH09163413A (ja) * 1995-12-11 1997-06-20 Nec Corp 光通信ネットワーク装置と光伝送方式と光通信ネットワーク
GB9526185D0 (en) * 1995-12-21 1996-02-21 Stc Submarine Systems Ltd Fiber-break detection in bi-directional optical amplifier systems
US5926263A (en) * 1996-10-10 1999-07-20 Tyco Submarine Systems Ltd. Side-tone OTDR for in-service optical cable monitoring
AU9675898A (en) 1997-09-29 1999-04-23 Tollgrade Communications, Inc. Frequency agile transponder
DE19917751C2 (de) * 1999-04-20 2001-05-31 Nokia Networks Oy Verfahren und Überwachungsvorrichtung zur Überwachung der Qualität der Datenübertragung über analoge Leitungen
US6519026B1 (en) * 1999-08-06 2003-02-11 Lucent Technologies Inc. Optical time-domain reflectometer (OTDR)
US6317535B1 (en) * 1999-08-24 2001-11-13 Lucent Technologies Inc. System and method for testing optical fibers that lead between a telecommunications provider and a customer's premises
US6650803B1 (en) * 1999-11-02 2003-11-18 Xros, Inc. Method and apparatus for optical to electrical to optical conversion in an optical cross-connect switch
US6778778B1 (en) * 2001-01-11 2004-08-17 Sprint Communications Company, L.P. Arrangement and method for testing fiber optic telecommunications circuits over dense wavelength division multiplexing (DWDM)
US7394980B1 (en) 2001-01-11 2008-07-01 Sprint Communications Company L.P. Systems and methods for testing a circuit in a communication network
JP4676099B2 (ja) * 2001-08-06 2011-04-27 株式会社日立製作所 反射モニタ機能を備え反射検出可能な光切替装置、及び反射測定システム
DE60200322T2 (de) * 2002-10-29 2005-02-24 Agilent Technologies, Inc. (n.d.Ges.d.Staates Delaware), Palo Alto Verfahren und Anordnung zur Fernüberwachung von optischen Kabeln unter Verwendung einer Prüfwellenlänge
US7561798B2 (en) * 2003-03-07 2009-07-14 Verizon Services Corp. Testing a fiber link in a communication system without interrupting service
US9166681B2 (en) 2010-10-13 2015-10-20 Telefonaktiebolaget L M Ericsson (Publ) Determining asymmetries in a communication network
JP5724431B2 (ja) * 2011-02-16 2015-05-27 日本電気株式会社 スパンロスモニタシステム及びスパンロスモニタ方法
JP5797839B2 (ja) * 2011-06-16 2015-10-21 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． 光パワーを制御するための方法および装置
US8792091B2 (en) * 2011-08-12 2014-07-29 Ii-Vi Incorporated Embedded optical time domain reflectometer for optically amplified links
US20160315701A1 (en) * 2015-04-24 2016-10-27 Fujitsu Limited Optical transmission device, method for verifying connection, and wavelength selective switch card
US10236975B2 (en) 2017-02-10 2019-03-19 Intel Corporation Programmable photonic-electronic integrated circuit for optical testing
US10411796B1 (en) * 2018-05-22 2019-09-10 Ciena Corporation Optical fiber characterization measurement systems and methods

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS593051B2 (ja) * 1978-01-09 1984-01-21 ケイディディ株式会社 光中継伝送路の障害監視方式
US4557553A (en) * 1981-11-02 1985-12-10 The United States Of America As Represented By The Secretary Of The Navy Method of wavelength multiplexing in fused single-mode fiber couplers
DE3380681D1 (en) * 1982-05-06 1989-11-09 Nippon Telegraph & Telephone Method and device for separating position of fault in light transmission line
DE3335674A1 (de) * 1982-11-13 1984-05-24 Krone Gmbh, 1000 Berlin Einrichtung zur manuellen streckenpruefung einer optischen teilnehmeranschlussleitung aus glasfaser mit bidirektionalem wellenlaengenmultiplex
DE3273936D1 (en) * 1982-12-18 1986-11-27 Ant Nachrichtentech Fault locating arrangement for an optical fibre cable link
US4642804A (en) * 1985-05-10 1987-02-10 Bell Communications Research, Inc. Shared laser lightwave transmission systems
US4834481A (en) * 1985-11-12 1989-05-30 Gould Inc. In-line single-mode fiber optic multiplexer/demultiplexer
US4704713A (en) * 1985-12-26 1987-11-03 Bell Communications Research, Inc. Optical ring network
GB8709900D0 (en) * 1987-04-27 1987-08-05 British Telecomm Surveillance system

Also Published As

Publication number Publication date
CN1046075A (zh) 1990-10-10
JPH03113930A (ja) 1991-05-15
GB2229881A (en) 1990-10-03
CN1020229C (zh) 1993-03-31
EP0390320A3 (en) 1992-07-08
GB8906937D0 (en) 1989-05-10
CA2010908A1 (en) 1990-09-28
PT93591A (pt) 1990-11-07
US5077729A (en) 1991-12-31
FI901529A0 (fi) 1990-03-27
EP0390320A2 (en) 1990-10-03
AU627853B2 (en) 1992-09-03
GB9003095D0 (en) 1990-04-11
AU5219990A (en) 1990-10-04

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FD Application lapsed
MM Patent lapsed

Owner name: GPT LIMITED