DE69230920T2 - Passives optisches Netzwerk - Google Patents

Passives optisches Netzwerk

Info

Publication number
DE69230920T2
DE69230920T2 DE69230920T DE69230920T DE69230920T2 DE 69230920 T2 DE69230920 T2 DE 69230920T2 DE 69230920 T DE69230920 T DE 69230920T DE 69230920 T DE69230920 T DE 69230920T DE 69230920 T2 DE69230920 T2 DE 69230920T2
Authority
DE
Germany
Prior art keywords
optical network
passive optical
passive
network
optical
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69230920T
Other languages
English (en)
Other versions
DE69230920D1 (de
Inventor
Leonard George Cohen
Jack Harriman Winters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
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
Priority claimed from US07/806,561 external-priority patent/US5285305A/en
Application filed by AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69230920D1 publication Critical patent/DE69230920D1/de
Publication of DE69230920T2 publication Critical patent/DE69230920T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • 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
    • H04B10/038—Arrangements for fault recovery using bypasses
    • 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
    • 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
    • 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
    • H04B10/0773—Network aspects, e.g. central monitoring of transmission parameters
    • 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
    • H04B10/0775—Performance monitoring and measurement of transmission parameters
    • 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
    • H04B10/0779—Monitoring line transmitter or line receiver equipment
    • 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
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0799—Monitoring line transmitter or line receiver equipment
    • 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
    • H04B10/272—Star-type networks or tree-type networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • 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
    • H04B2210/071—Monitoring an optical transmission system using a supervisory signal using alarms
    • 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
    • H04B2210/077—Monitoring an optical transmission system using a supervisory signal using a separate fibre
DE69230920T 1991-12-12 1992-11-20 Passives optisches Netzwerk Expired - Lifetime DE69230920T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/806,561 US5285305A (en) 1991-12-12 1991-12-12 Optical communication network with passive monitoring
US07/857,365 US5321541A (en) 1991-12-12 1992-03-25 Passive optical communication network with broadband upgrade

Publications (2)

Publication Number Publication Date
DE69230920D1 DE69230920D1 (de) 2000-05-18
DE69230920T2 true DE69230920T2 (de) 2001-07-19

Family

ID=27122895

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69230920T Expired - Lifetime DE69230920T2 (de) 1991-12-12 1992-11-20 Passives optisches Netzwerk
DE69222273T Expired - Lifetime DE69222273T2 (de) 1991-12-12 1992-11-20 Passives optisches Übertragungsnetzwerk

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69222273T Expired - Lifetime DE69222273T2 (de) 1991-12-12 1992-11-20 Passives optisches Übertragungsnetzwerk

Country Status (4)

Country Link
US (2) US5321541A (de)
EP (2) EP0546707B1 (de)
JP (1) JP2695586B2 (de)
DE (2) DE69230920T2 (de)

Families Citing this family (140)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5335104A (en) * 1992-10-22 1994-08-02 Laser Precision Corp. Method of detecting breaks in multi-drop feeder systems
US5546483A (en) * 1993-08-02 1996-08-13 Nippon Telegraph And Telephone Corporation Integrated optical waveguide circuit and optical branch line test system using the same
US5590405A (en) * 1993-10-29 1996-12-31 Lucent Technologies Inc. Communication technique employing variable information transmission
US5963350A (en) * 1994-03-29 1999-10-05 British Telecommunications Public Limited Company Optical telecommunications network
GB2292495B (en) * 1994-08-17 1998-03-25 Northern Telecom Ltd Fault location in optical communication systems
DE4433895A1 (de) * 1994-09-22 1996-03-28 Siemens Ag Optisches Teilnehmeranschlußnetz zur kombinierten Übertragung teilnehmerbezogener Signale und von Video- und/oder Audio-Verteilsignalen
US5696906A (en) * 1995-03-09 1997-12-09 Continental Cablevision, Inc. Telecommunicaion user account management system and method
US9191117B2 (en) * 1995-05-11 2015-11-17 Ciena Corporation High-speed optical transponder systems
US5694232A (en) * 1995-12-06 1997-12-02 Ericsson Raynet Full duplex optical modem for broadband access network
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
US5926590A (en) * 1995-12-29 1999-07-20 Mci Communications Corporation Power equalizer in a multiple wavelength bidirectional lightwave amplifier
DE19611424A1 (de) * 1996-03-22 1997-09-25 Siemens Ag Kombination eines optischen Sternnetzes und eines passiven optischen Netzes
JP2993433B2 (ja) * 1996-08-02 1999-12-20 日本電気株式会社 光結合器
US5926298A (en) * 1996-08-30 1999-07-20 Lucent Technologies Inc. Optical multiplexer/demultiplexer having a broadcast port
US6028684A (en) * 1996-10-23 2000-02-22 Tyco Submarine Systems Ltd Path to provide OTDR measurements of an optical transmission system that includes optical isolators
JPH10173598A (ja) * 1996-12-09 1998-06-26 Fujitsu Ltd 光合分波装置及びこれを用いた光伝送システム
US5867289A (en) * 1996-12-24 1999-02-02 International Business Machines Corporation Fault detection for all-optical add-drop multiplexer
DE19701888A1 (de) * 1997-01-21 1998-07-23 Alsthom Cge Alcatel System zur optischen Übertragung von Informationen
DE19719425A1 (de) * 1997-05-12 1998-11-19 Alsthom Cge Alcatel System zur optischen Übertragung von Informationen
US6631018B1 (en) 1997-08-27 2003-10-07 Nortel Networks Limited WDM optical network with passive pass-through at each node
US5911019A (en) * 1997-09-04 1999-06-08 Lucent Technologies Inc. Method for upgrading a hybrid fiber coax network to an all fiber network
US7054559B1 (en) 1997-09-04 2006-05-30 Mci Communications Corporation Method and system for modular multiplexing and amplification in a multi-channel plan
US6014477A (en) * 1997-09-09 2000-01-11 At&T Corp. Article comprising a photostrictive switching element
JPH11112430A (ja) * 1997-10-08 1999-04-23 Fujitsu Ltd 光加入者ネットワークシステム及び光加入者ネットワークシステムにおける障害監視方法
KR100595912B1 (ko) 1998-01-26 2006-07-07 웨인 웨스터만 수동 입력 통합 방법 및 장치
JP2002504777A (ja) * 1998-02-20 2002-02-12 エムシーアイ・ワールドコム・インコーポレーテッド １３１０ｎｍ帯域における高密度波長分割多重方法およびシステム
US6396801B1 (en) 1998-03-17 2002-05-28 Trw Inc. Arbitrary waveform modem
EP0996243A1 (de) * 1998-10-23 2000-04-26 Koninklijke KPN N.V. Verfahren und Vorrichtung zur Überwachung eines optischen Wellenlängenmultiplexierten Netzwerks
US6671254B1 (en) * 1998-12-11 2003-12-30 Oki Electric Industry Co., Ltd. Communication network and communication node used in such network
US6525853B1 (en) * 1999-09-15 2003-02-25 Lucent Technologies Inc. Laser communication system and method of operation using multiple transmitters and multiple receivers with dispersive multiplexing in multimode fiber
DE19949845A1 (de) * 1999-10-15 2001-04-19 Siemens Ag Optische Überwachungseinrichtung
KR100325687B1 (ko) * 1999-12-21 2002-02-25 윤덕용 주입된 비간섭성 광에 파장 잠김된 페브리-페롯 레이저다이오드를 이용한 파장분할 다중방식 광통신용 광원
US6396575B1 (en) 2000-05-31 2002-05-28 Lucent Technologies Inc. Test and measurement system for detecting and monitoring faults and losses in passive optical networks (PONs)
JP3708013B2 (ja) * 2000-09-29 2005-10-19 株式会社東芝 光通信システム
US6417965B1 (en) 2001-02-16 2002-07-09 Onetta, Inc. Optical amplifier control system
US6522459B1 (en) 2001-02-22 2003-02-18 Onetta, Inc. Temperature control and monitoring of optical detector components in an optical communication system
US20020145775A1 (en) * 2001-04-06 2002-10-10 Quantum Bridge Communications, Inc. TDM/WDMA passive optical network
US7614074B2 (en) * 2001-04-23 2009-11-03 Scientific-Atlanta, Inc. Burst-mode digital transmitter
US7266298B2 (en) 2001-05-07 2007-09-04 Aurora Networks, Inc. N-way broadcast/narrowcast optical combiner demultiplexing a multiplexed narrowcast input signal
US6707599B1 (en) 2001-06-25 2004-03-16 Onetta, Inc. Optical network equipment with triggered data storage
US7254330B2 (en) * 2001-07-20 2007-08-07 Tellabs Bedford, Inc. Single fiber passive optical network wavelength division multiplex overlay
US6798946B2 (en) * 2001-12-14 2004-09-28 Molex Incorporated Method to deskew parallel optical links
KR100496710B1 (ko) * 2002-01-21 2005-06-28 노베라옵틱스코리아 주식회사 주입된 비간섭성 광에 파장 잠김된 광원을 이용한 양방향파장분할다중방식 수동형 광 네트워크
AU2003222112A1 (en) * 2002-03-28 2003-10-13 Celion Networks, Inc. Apparatus and method for aggregation and transportation for plesiosynchronous framing oriented data formats
WO2003084082A2 (en) 2002-03-29 2003-10-09 Celion Networks, Inc. Distributed terminal optical transmission system
US7164692B2 (en) 2002-04-08 2007-01-16 Jeffrey Lloyd Cox Apparatus and method for transmitting 10 Gigabit Ethernet LAN signals over a transport system
US6965738B2 (en) * 2002-04-16 2005-11-15 Eiselt Michael H Chromatic dispersion compensation system and method
WO2003090035A2 (en) * 2002-04-22 2003-10-30 Celion Networks, Inc. Automated optical transport system
US6847678B2 (en) * 2002-04-25 2005-01-25 Raytheon Company Adaptive air interface waveform
US8494372B2 (en) * 2002-04-30 2013-07-23 Pivotal Decisions Llc Apparatus and method for optimizing optical and electrical filtering of optical signals
US7460296B2 (en) * 2002-04-30 2008-12-02 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
WO2003094398A1 (en) * 2002-04-30 2003-11-13 Celion Networks, Inc. Optical transport system architecture for remote terminal connectivity
US7711271B2 (en) * 2002-04-30 2010-05-04 Eiselt Michael H Wave division multiplexed optical transport system utilizing optical circulators to isolate an optical service channel
US7206516B2 (en) * 2002-04-30 2007-04-17 Pivotal Decisions Llc Apparatus and method for measuring the dispersion of a fiber span
KR100515259B1 (ko) * 2002-05-03 2005-09-15 한국과학기술원 파장 가변 광원 구현 방법 및 장치와 이 광원을 이용한 파장분할 다중방식 광전송 장치
AU2003273529A1 (en) 2002-06-04 2003-12-19 Celion Networks, Inc. Flexible, dense line card architecture
US6920277B2 (en) 2002-06-04 2005-07-19 Marvin R. Young Optical bypass method and architecture
US20040042067A1 (en) * 2002-06-04 2004-03-04 Eiselt Michael H. Apparatus and method for duplex optical transport using a co-directional optical amplifier
US7924496B2 (en) * 2002-06-04 2011-04-12 Pivotal Decisions Llc Apparatus and method for Raman gain control
US7603042B2 (en) * 2002-06-04 2009-10-13 Eiselt Michael H Apparatus and method for optimum decision threshold setting
US20050226630A1 (en) * 2003-06-03 2005-10-13 Celion Networks Inc. Optical bypass method and architecture
US7460745B2 (en) * 2002-06-04 2008-12-02 Pivotal Decisions Llc Configurable dispersion compensation trimmer
US7440164B2 (en) * 2002-06-04 2008-10-21 Pivotal Decisions Llc Apparatus and method for Raman gain spectral control
US7593647B2 (en) * 2002-09-19 2009-09-22 Novera Optics, Inc. Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal
US20040057734A1 (en) * 2002-09-25 2004-03-25 Lucent Technologies, Inc. Method and system for reducing transmission penalties associated with ghost pulses
US7421207B2 (en) * 2002-12-13 2008-09-02 Pivotal Decisions Llc Single fiber duplex optical transport
US7656905B2 (en) 2002-12-24 2010-02-02 Samir Sheth Apparatus and method for aggregation and transportation of gigabit ethernet and other packet based data formats
KR100473520B1 (ko) 2002-12-24 2005-03-10 한국과학기술원 외부 비간섭성 광원을 주입하여 파장 고정된 페브리-페롯레이저를 이용한 광 가입자 망
US7782778B2 (en) * 2002-12-24 2010-08-24 Samir Satish Sheth Apparatus and method for fibre channel distance extension embedded within an optical transport system
US20040151501A1 (en) * 2003-02-05 2004-08-05 Johannes Gerdes Method and system for supervising an optical network termination unit
US7515626B2 (en) * 2003-05-29 2009-04-07 Novera Optics, Inc. Light source capable of lasing that is wavelength locked by an injected light signal
KR100955129B1 (ko) * 2003-05-30 2010-04-28 정보통신연구진흥원 비간섭성　광대역　광원을 이용한 파장분할다중방식　수동형　광 네트워크 구현 방법
US6898347B2 (en) * 2003-05-30 2005-05-24 Intel Corporation Monitoring power in optical networks
RU2345490C2 (ru) 2003-10-15 2009-01-27 Эксфо Электро-Оптикал Инжиниринг Инк Способ и устройство для тестирования оптических сетей
US7313157B2 (en) * 2003-12-19 2007-12-25 Novera Optics, Inc. Integration of laser sources and detectors for a passive optical network
WO2006026813A1 (en) * 2004-09-07 2006-03-16 National Ict Australia Limited Pon system with local networking capability
WO2006034402A2 (en) * 2004-09-21 2006-03-30 Synta Pharmaceutical Corp. Compounds for inflammation and immune-related uses
ATE377871T1 (de) 2004-12-21 2007-11-15 Alcatel Lucent Passives optisches netzwerk und dessen überwachungsverfahren
US20060153566A1 (en) * 2005-01-13 2006-07-13 Sorin Wayne V Methods and apparatuses to provide a wavelength-division-multiplexing passive optical network with asymmetric data rates
US7660528B2 (en) * 2005-05-13 2010-02-09 Teknovus, Inc. Method and system for mitigating Raman crosstalk in an Ethernet passive optical network
DE102005028844B4 (de) * 2005-06-22 2007-07-05 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Verfahren und Vorrichtung zur Steuerung einer nicht selbsthaltenden Kupplung
GB0514680D0 (en) * 2005-07-16 2005-08-24 Tyco Electronics Raychem Nv PCB optical network monitor
FR2889741B1 (fr) * 2005-08-09 2007-09-28 Nexans Sa Systeme de determination et de localisation de defauts par reflectometrie dans un reseau optique
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
US7653309B2 (en) * 2005-10-20 2010-01-26 Fujitsu Limited System and method for distributing traffic in an optical network
US7522838B2 (en) * 2005-10-20 2009-04-21 Fujitsu Limited Distribution components for a wavelength-sharing network
US7684706B2 (en) * 2005-10-20 2010-03-23 Fujitsu Limited System and method for traffic distribution in an optical network
US7499651B2 (en) * 2005-10-20 2009-03-03 Fujitsu Limited Upgradeable passive optical network
US8023823B2 (en) * 2005-10-20 2011-09-20 Fujitsu Limited System and method for transmitting upstream traffic in an optical network
US7546036B2 (en) * 2005-10-20 2009-06-09 Fujitsu Limited Hybrid passive optical network using shared wavelengths
US7684705B2 (en) * 2005-10-20 2010-03-23 Fujitsu Limited Distribution node for a wavelength-sharing network
CA2631900C (en) * 2005-10-24 2014-08-26 Exfo Electro-Optical Engineering Inc. Method and apparatus for identification of multiple fibers using an otdr
US8482725B2 (en) * 2005-10-24 2013-07-09 Exfo Inc. Method and apparatus for identification of multiple fibers using an OTDR
US7653305B1 (en) 2005-10-25 2010-01-26 Lockheed Martin Corporation Optical transport system and device
US20070122152A1 (en) * 2005-11-30 2007-05-31 Matthews Manyalibo J Method and apparatus for increasing downstream bandwidth of a passive optical network using integrated WDM/power spitting devices and tunable lasers
US7603036B2 (en) * 2006-01-06 2009-10-13 Fujitsu Limited System and method for managing network components in a hybrid passive optical network
US7639946B2 (en) * 2006-01-06 2009-12-29 Fujitsu Limited Distribution node for an optical network
CN101009584B (zh) * 2006-01-24 2011-04-20 华为技术有限公司 对无源光网络进行网络速率升级的方法、设备和系统
US8180223B2 (en) * 2006-02-03 2012-05-15 Fujitsu Limited System and method for extending reach in a passive optical network
DE102006029967B3 (de) * 2006-04-20 2007-12-13 Siemens Ag Schutzvorrichtung zur Behebung von Signalstörungen in einem passiven optischen Netzwerk sowie passives optisches Netzwerk und Verfahren zur Behebung von Signalstörungen
US20070280690A1 (en) * 2006-06-02 2007-12-06 Fujitsu Limited System and Method for Managing Power in an Optical Network
US7715719B2 (en) * 2006-06-02 2010-05-11 Fujitsu Limited System and method for transmitting traffic in a plurality of passive optical networks
US7715718B2 (en) * 2006-08-01 2010-05-11 Alcatel Lucent Passive optical network optical time-domain reflectometry
US8050561B2 (en) * 2006-08-11 2011-11-01 Futurewei Technologies, Inc. Asymmetrical PON with multiple return channels
TWI350071B (en) * 2006-09-11 2011-10-01 Univ Nat Taiwan Science Tech Detection system for identifying faults in a passive optical network
JP4445499B2 (ja) * 2006-09-14 2010-04-07 富士通株式会社 波長重畳デバイス及びその製造方法並びに波長多重ネットワークシステム
EP1906563B1 (de) * 2006-09-29 2011-04-27 Nokia Siemens Networks GmbH & Co. KG Verfahren, Kommunikationssystem und zentrale Kommunikationseinheit zum Detektieren von einer fehlerhaften Peripherie-Kommunikationseinheit
US8571410B2 (en) * 2006-10-11 2013-10-29 Novera Optics, Inc. Mutual wavelength locking in WDM-PONS
US20080138063A1 (en) * 2006-12-11 2008-06-12 Youichi Akasaka System and Method for Protecting an Optical Network
US8565599B2 (en) 2006-12-11 2013-10-22 Fujitsu Limited System and method for transmitting optical markers in a passive optical network system
US7970281B2 (en) * 2007-01-26 2011-06-28 Fujitsu Limited System and method for managing different transmission architectures in a passive optical network
US7920792B2 (en) * 2007-05-02 2011-04-05 Fujitsu Limited System and method for managing communication in a hybrid passive optical network
KR100965941B1 (ko) * 2007-10-05 2010-06-24 한국과학기술원 수동형 광 가입자 망에서 향상된 서비스를 제공하기 위한원격 노드의 구조 및 이를 구비한 수동형 광 가입자 망
US20090148165A1 (en) * 2007-12-05 2009-06-11 Electronics & Telecommunications Research Institute Optical filtering apparatus and optical communication system
US8948598B2 (en) * 2008-02-13 2015-02-03 Fujitsu Limited System and method for increasing upstream capacity in an optical network
US20090263122A1 (en) * 2008-04-22 2009-10-22 Roger Jonathan Helkey Method and apparatus for network diagnostics in a passive optical network
EP2425556B1 (de) * 2009-04-30 2019-10-30 Telefonaktiebolaget LM Ericsson (publ) Verfahren und vorrichtung zur fehlererkennung in passiven optischen netzwerken (pon)
US8606058B2 (en) * 2009-04-30 2013-12-10 Hewlett-Packard Development Company, L.P. Multi-channel optical coupler
US20110026930A1 (en) * 2009-07-29 2011-02-03 Zhi Cui Methods and apparatus to upgrade communication services in subscriber distribution areas
EP2337240B1 (de) * 2009-12-15 2015-11-11 Alcatel Lucent Mehrkanaliges, passives optisches Wellenlängen-Multiplex-Netzwerk (WDM-PON) mit integrierter Funktion zur optischen Zeitbereichsreflektometrie (OTDR)
US8582606B2 (en) * 2010-05-24 2013-11-12 Cortina Systems, Inc. Network system with synchronization and method of operation thereof
EP2726837B1 (de) * 2011-07-01 2018-09-05 Telefonaktiebolaget LM Ericsson (publ) Vorrichtung, remote-knoten und verfahren zur pon-überwachung
US8693866B1 (en) * 2012-01-20 2014-04-08 Google Inc. Fiber diagnosis system for WDM optical access networks
AR090643A1 (es) * 2012-04-13 2014-11-26 Telefonica Sa Sistema para la supervision de capa fisica en redes opticas basandose en otdr ajustable, un conmutador optico hibrido y una focs
CN102916740A (zh) * 2012-11-01 2013-02-06 烽火通信科技股份有限公司 多波长无源光网络中的双向光功率测量装置及方法
US9178610B1 (en) 2013-03-14 2015-11-03 Google Inc. Optical loopback in a wavelength division multiplexing system
JP5978174B2 (ja) * 2013-07-08 2016-08-24 日本電信電話株式会社 中継器
WO2015006623A1 (en) 2013-07-10 2015-01-15 Neophotonics Corporation Optical network communication system with embedded optical time domain reflectometer and method of operation thereof
US9184833B2 (en) * 2013-08-28 2015-11-10 Fluke Corporation Optical fiber testing using OTDR instrument
US9634761B2 (en) * 2014-04-11 2017-04-25 Alcatel Lucent Apparatus and method for optical-network monitoring
WO2016057411A1 (en) * 2014-10-06 2016-04-14 Adc Telecommunications, Inc. Facilitating installation of fiber optic networks
US9831948B2 (en) 2015-09-22 2017-11-28 Exfo Inc. Optical power measurement in a passive optical network
US10270554B2 (en) 2015-09-22 2019-04-23 Exfo Inc. Optical power measurement in a passive optical network
CN106303769A (zh) * 2016-11-10 2017-01-04 成都必合科技有限公司 一种中心局设备及三网融合系统
EP3340503A1 (de) * 2016-12-20 2018-06-27 Xieon Networks S.à r.l. Unterträgerdiversität in optischen kommunikationssystemen
US10432302B1 (en) 2017-06-26 2019-10-01 Amazon Technologies, Inc. Bidirectional optical fiber auto-notifier test system
TWI684335B (zh) * 2017-08-07 2020-02-01 中華電信股份有限公司 被動式接取網路之障礙查測系統與方法
US10917168B2 (en) * 2018-12-21 2021-02-09 Nec Corporation Optical fiber sensing systems, methods, structures and applications
US10996138B2 (en) * 2019-08-30 2021-05-04 Viavi Solutions Inc. Parallel optics based optical time domain reflectometer acquisition

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306313A (en) * 1979-10-11 1981-12-15 International Telephone And Telegraph Corporation High reliability optical fiber communication system
DE3323317A1 (de) * 1983-06-28 1985-01-03 Siemens AG, 1000 Berlin und 8000 München Sternkoppler fuer lokale netze der optischen nachrichtentechnik
US4580872A (en) * 1983-08-17 1986-04-08 Fiberlan, Inc. Collision detection apparatus utilizing tap means connected to each transmitting optical fiber for fiber optic Local Area Networks
US4709418A (en) * 1983-09-14 1987-11-24 British Telecommunications Public Limited Company Wideband cable network
US4712859A (en) * 1985-09-19 1987-12-15 Bell Communications Research, Inc. Distributed star network
GB8727846D0 (en) * 1987-11-27 1987-12-31 British Telecomm Optical communications network
JP2615639B2 (ja) * 1987-07-27 1997-06-04 株式会社ブリヂストン 免震構造体
US4902086A (en) * 1988-03-03 1990-02-20 At&T Bell Laboratories Device including a substrate-supported optical waveguide, and method of manufacture
DE3907495A1 (de) * 1989-03-08 1990-09-13 Standard Elektrik Lorenz Ag Optisches nachrichtenuebertragungssystem fuer den teilnehmeranschlussbereich
DE3913300A1 (de) * 1989-04-22 1990-10-25 Standard Elektrik Lorenz Ag Optisches nachrichtenuebertragungssystem fuer den teilnehmeranschlussbereich
US5285305A (en) * 1991-12-12 1994-02-08 At & T Bell Laboratories Optical communication network with passive monitoring

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EP0546707A2 (de) 1993-06-16
DE69222273T2 (de) 1998-01-15
DE69222273D1 (de) 1997-10-23
EP0546707B1 (de) 1997-09-17
EP0786878A3 (de) 1998-03-18
USRE36471E (en) 1999-12-28
EP0786878A2 (de) 1997-07-30
EP0786878B1 (de) 2000-04-12
EP0546707A3 (en) 1993-10-06
JP2695586B2 (ja) 1997-12-24
US5321541A (en) 1994-06-14
DE69230920D1 (de) 2000-05-18

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