BR9908176A - Sistema de monitoramento de linha de ramal e método de monitoramento de linha de ramal - Google Patents

Sistema de monitoramento de linha de ramal e método de monitoramento de linha de ramal

Info

Publication number
BR9908176A
BR9908176A BR9908176-8A BR9908176A BR9908176A BR 9908176 A BR9908176 A BR 9908176A BR 9908176 A BR9908176 A BR 9908176A BR 9908176 A BR9908176 A BR 9908176A
Authority
BR
Brazil
Prior art keywords
extension line
line monitoring
monitoring
monitored
lines
Prior art date
Application number
BR9908176-8A
Other languages
English (en)
Inventor
Masakazu Shigehara
Hiroo Kanamori
Original Assignee
Sumitomo Electric Industries
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 Sumitomo Electric Industries filed Critical Sumitomo Electric Industries
Publication of BR9908176A publication Critical patent/BR9908176A/pt

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]
    • 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

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)

Abstract

Patente de Invenção: <B>"SISTEMA DE MONITORAMENTO DE LINHA DE RAMAL E MéTODO DE MONITORAMENTO DE LINHA DE RAMAL"<D>. A presente invenção refere-se a um sistema de monitoramento de linha de ramal e a um método de monitoramento de linha de ramal, compreendendo uma configuração que aperfeiçoa a razão S/N da medida das informações e pode ser conduzida de forma económica. Esse sistema é proporcionado com filtros ópticos, que correspondem às linhas de fibra óptica a serem monitoradas como linhas de ramal. Cada um desses filtros ópticos tem uma característica de corte como cortar um respectivo dos canais de luz de monitoramento, mas transmitir por eles a luz de monitoramento remanescente e a luz de sinalização. Quando os filtros ópticos tendo tal característica de corte são proporcionados, cada uma das linhas de fibra óptica é monitorada por uso de uma pluralidade de canais de luz de monitoramento diferentes daquele cortado pelo filtro óptico, desde que correspondam a ele. Conseq³entemente, comparado com o caso quando uma linha de fibra óptica é monitorada por aquele canal correspondente de luz de monitoramento, a razão S/N da medida das informações é aperfeiçoada, com o que o monitoramento altamente preciso é possível.
BR9908176-8A 1998-02-23 1999-02-05 Sistema de monitoramento de linha de ramal e método de monitoramento de linha de ramal BR9908176A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4027798 1998-02-23
PCT/JP1999/000510 WO1999042803A1 (en) 1998-02-23 1999-02-05 Branch line monitoring system and branch line monitoring method

Publications (1)

Publication Number Publication Date
BR9908176A true BR9908176A (pt) 2000-11-07

Family

ID=12576139

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9908176-8A BR9908176A (pt) 1998-02-23 1999-02-05 Sistema de monitoramento de linha de ramal e método de monitoramento de linha de ramal

Country Status (8)

Country Link
US (1) US6771358B1 (pt)
EP (1) EP1059518B1 (pt)
CN (1) CN1174566C (pt)
AU (1) AU741723B2 (pt)
BR (1) BR9908176A (pt)
CA (1) CA2321915C (pt)
DE (1) DE69941839D1 (pt)
WO (1) WO1999042803A1 (pt)

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KR100325687B1 (ko) * 1999-12-21 2002-02-25 윤덕용 주입된 비간섭성 광에 파장 잠김된 페브리-페롯 레이저다이오드를 이용한 파장분할 다중방식 광통신용 광원
US6606148B2 (en) * 2001-04-23 2003-08-12 Systems And Processes Engineering Corp. Method and system for measuring optical scattering characteristics
GB0126166D0 (en) * 2001-10-31 2002-01-02 Cit Alcatel Apparatus and method for monitoring an optical transmission line
KR100955129B1 (ko) 2003-05-30 2010-04-28 정보통신연구진흥원 비간섭성　광대역　광원을 이용한 파장분할다중방식　수동형　광 네트워크 구현 방법
TWI255618B (en) * 2005-01-26 2006-05-21 Ind Tech Res Inst Apparatus and method of optical fiber condition monitoring in optical networks
CN100558013C (zh) * 2005-04-29 2009-11-04 财团法人工业技术研究院 一种光纤网络的监测装置及方法
KR100698766B1 (ko) * 2005-09-07 2007-03-23 한국과학기술원 파장분할 다중방식 수동형 광 가입자 망 시스템에 사용되는장애 위치 감시 장치 및 이를 구비한 파장분할 다중방식수동형 광 가입자 망 시스템
KR100785436B1 (ko) 2005-09-20 2007-12-13 한국과학기술원 방송 서비스와 통신 서비스를 융합한 파장분할 다중방식수동형 광 가입자망
WO2007048226A1 (en) * 2005-10-24 2007-05-03 Exfo Electro-Optical Engineering, Inc. Method and apparatus for identification of multiple fibers using an otdr
US8571410B2 (en) * 2006-10-11 2013-10-29 Novera Optics, Inc. Mutual wavelength locking in WDM-PONS
CA2723462A1 (en) * 2008-04-21 2009-10-29 Oplink Communications, Inc. Fiber network monitoring
US8594496B2 (en) * 2009-11-13 2013-11-26 Futurewei Technologies, Inc. Tunable coherent optical time division reflectometry
IL206723A0 (en) * 2010-06-30 2010-12-30 Eci Telecom Ltd Technology for fault allocation in passive optical networks (pon)
US9614613B2 (en) 2012-12-12 2017-04-04 Telefonaktiebolaget Lm Ericsson (Publ) Communication network element and method of mitigating an optical jamming attack against an optical communication system
CN104009804A (zh) * 2013-02-22 2014-08-27 中兴通讯股份有限公司 光收发装置及方法
CN107852236A (zh) * 2015-06-16 2018-03-27 昇宰股份公司 光线路监控系统
EP3539107B1 (en) 2016-11-11 2023-06-07 Carrier Corporation High sensitivity fiber optic based detection
CN106788751A (zh) * 2016-11-30 2017-05-31 武汉光迅科技股份有限公司 一种应用多波长双向泵浦高阶双向拉曼放大光纤通信传输系统及方法
CN114430512B (zh) * 2020-10-29 2023-04-28 华为技术有限公司 端口识别的方法和装置

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JP2721211B2 (ja) 1988-11-24 1998-03-04 古河電気工業株式会社 分岐光線路の損失分布測定装置
GB8828408D0 (en) * 1988-12-06 1989-01-05 British Telecomm Loss detector
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GB9202564D0 (en) * 1992-02-07 1992-03-25 Marconi Gec Ltd Optical signal transmission network
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US5383015A (en) * 1992-12-22 1995-01-17 At&T Corp. Optical time domain reflectometry measurements on a multi-branch optical network using multiwavelength pass filters
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JP3224344B2 (ja) * 1996-06-10 2001-10-29 安藤電気株式会社 多分岐光線路試験装置
US5757487A (en) * 1997-01-30 1998-05-26 The United States Of America As Represented By The Secretary Of The Navy Methods and apparatus for distributed optical fiber sensing of strain or multiple parameters
DE69800438T2 (de) * 1998-02-16 2001-04-26 Hewlett-Packard Co., Palo Alto Lokalisierung von Fehlern in faseroptischen Systemen
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Also Published As

Publication number Publication date
CN1174566C (zh) 2004-11-03
EP1059518A4 (en) 2006-05-03
EP1059518B1 (en) 2009-12-23
DE69941839D1 (de) 2010-02-04
AU2186999A (en) 1999-09-06
CA2321915C (en) 2007-04-17
AU741723B2 (en) 2001-12-06
CA2321915A1 (en) 1999-08-26
US6771358B1 (en) 2004-08-03
CN1292085A (zh) 2001-04-18
EP1059518A1 (en) 2000-12-13
WO1999042803A1 (en) 1999-08-26

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM O ART. 13 DA LPI.

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.

B15K Others concerning applications: alteration of classification

Ipc: H04B 10/071 (2013.01), G01M 11/00 (2006.0