DE69225416D1 - Optische Rückschleife- und Leitungstestvorrichtung - Google Patents

Optische Rückschleife- und Leitungstestvorrichtung

Info

Publication number
DE69225416D1
DE69225416D1 DE69225416T DE69225416T DE69225416D1 DE 69225416 D1 DE69225416 D1 DE 69225416D1 DE 69225416 T DE69225416 T DE 69225416T DE 69225416 T DE69225416 T DE 69225416T DE 69225416 D1 DE69225416 D1 DE 69225416D1
Authority
DE
Germany
Prior art keywords
test device
line test
optical loopback
loopback
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 - Fee Related
Application number
DE69225416T
Other languages
English (en)
Other versions
DE69225416T2 (de
Inventor
Toshiyuki Tsuchiya
Jun Sato
Kazuyoshi Ohno
Satoyuki Matsui
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Application granted granted Critical
Publication of DE69225416D1 publication Critical patent/DE69225416D1/de
Publication of DE69225416T2 publication Critical patent/DE69225416T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B10/03—Arrangements for fault recovery
    • H04B10/035—Arrangements for fault recovery using loopbacks
    • 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)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
DE69225416T 1991-02-12 1992-02-11 Optische Rückschleife- und Leitungstestvorrichtung Expired - Fee Related DE69225416T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3018982A JP2804633B2 (ja) 1991-02-12 1991-02-12 光折り返し／媒体試験器

Publications (2)

Publication Number Publication Date
DE69225416D1 true DE69225416D1 (de) 1998-06-18
DE69225416T2 DE69225416T2 (de) 1998-12-03

Family

ID=11986811

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69225416T Expired - Fee Related DE69225416T2 (de) 1991-02-12 1992-02-11 Optische Rückschleife- und Leitungstestvorrichtung

Country Status (4)

Country Link
US (1) US5319482A (de)
EP (1) EP0499529B1 (de)
JP (1) JP2804633B2 (de)
DE (1) DE69225416T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112985774A (zh) * 2021-02-08 2021-06-18 厦门特仪科技有限公司 一种硅基Micro OLED微显示器高精度角度测试方法

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JPH05211479A (ja) * 1992-01-30 1993-08-20 Fujitsu Ltd 同一波長双方向伝送装置の光ループバック方法
SE518622C2 (sv) * 1992-07-03 2002-10-29 Ericsson Telefon Ab L M Förfarande och anordning för övervakning av förgrenade optiska ledningsnät
US5844702A (en) * 1992-11-05 1998-12-01 Sprint Communications Co, L.P. Bidirectional optical fiber transmission system with reflection signal monitor
GB2274753B (en) * 1993-01-29 1997-06-25 Marconi Gec Ltd Optical signal transmission network
US5504617A (en) * 1994-02-08 1996-04-02 British Telecommunications Public Limited Company Optical time domain reflectometry
GB9526185D0 (en) * 1995-12-21 1996-02-21 Stc Submarine Systems Ltd Fiber-break detection in bi-directional optical amplifier systems
US5915051A (en) * 1997-01-21 1999-06-22 Massascusetts Institute Of Technology Wavelength-selective optical add/drop switch
US6657668B1 (en) * 1997-11-19 2003-12-02 Ricoh Company, Ltd. Method, system, and computer readable medium for controlling automatic focusing of a digital camera
US6246497B1 (en) 1998-03-12 2001-06-12 Net-Hopper Systems, Inc. Active optical loop-back system
EP1018665B1 (de) * 1999-01-05 2004-03-17 Corning Incorporated Asymmetrischer thermo-optischer Schalter
EP1166075A1 (de) * 1999-04-09 2002-01-02 Corning Incorporated Apparat zur messung der eigenschaften einer optischen faser
US6351578B1 (en) 1999-08-06 2002-02-26 Gemfire Corporation Thermo-optic switch having fast rise-time
JP2001223642A (ja) * 2000-02-09 2001-08-17 Sumitomo Electric Ind Ltd 光通信装置
JP3904835B2 (ja) * 2001-01-29 2007-04-11 株式会社日立製作所 光増幅器、光ファイバラマン光増幅器、及び光システム
US6947857B2 (en) * 2001-03-16 2005-09-20 Mindspeed Technologies, Inc. Optical sequence time domain reflectometry during data transmission
US6757456B2 (en) * 2001-06-19 2004-06-29 Corning Incorporated System for selecting an appropriate optical fiber type for a communication network
US20030068024A1 (en) * 2001-10-05 2003-04-10 Jones William W. Communication system activation
US8750702B1 (en) * 2002-06-21 2014-06-10 Rockstar Consortium Us Lp Passive optical loopback
US20090034965A1 (en) * 2004-02-23 2009-02-05 Look Christopher M Method and an apparatus to automatically verify connectivity within an optical network node
US7848644B2 (en) * 2004-02-23 2010-12-07 Dynamic Method Enterprises Limited Method and an apparatus to provide optical equipment protection
KR100606029B1 (ko) * 2004-06-15 2006-07-31 삼성전자주식회사 자기 감시를 위한 수동형 광 가입자 망
US8180216B2 (en) * 2007-12-20 2012-05-15 Verizon Patent And Licensing Inc. Latency measurement in optical networks
US8750341B2 (en) * 2008-01-04 2014-06-10 Mindspeed Technologies, Inc. Method and apparatus for reducing optical signal speckle
PL389066A1 (pl) * 2009-09-17 2011-03-28 Telekomunikacja Polska Spółka Akcyjna Sposób tłumienia optycznego sygnału pomiarowego w trakcie monitorowania określonego toru optycznego w pracującej jednomodowej sieci FTTx o strukturze rozgałęzionej
CN101917226B (zh) * 2010-08-23 2016-03-02 中兴通讯股份有限公司 一种在无源光网络中进行光纤故障诊断的方法及光线路终端
US9054668B2 (en) 2012-03-30 2015-06-09 Broadcom Corporation Broadband absorptive-loading filter
CA2942107C (en) * 2014-03-10 2021-01-05 Aeponyx Inc. Optical device with tunable optical wavelength selective circuit
EP2961085B1 (de) * 2014-06-26 2016-08-17 ADVA Optical Networking SE Optische Kopplervorrichtung und optische Überwachungsvorrichtung zur Überwachung eines oder mehrerer optischer Punkt-zu-Punkt-Übertragungsverbindungen
EP3189601B1 (de) * 2014-09-03 2023-08-02 British Telecommunications public limited company Fehleridentifikation für optisches netzwerk
US9680569B2 (en) * 2014-10-01 2017-06-13 Ciena Corporation Method and system for optical connection validation in a reconfigurable optical add-drop multiplexer (ROADM) node
US20160315701A1 (en) * 2015-04-24 2016-10-27 Fujitsu Limited Optical transmission device, method for verifying connection, and wavelength selective switch card
SG10201901665XA (en) 2016-03-22 2019-03-28 Lyteloop Technologies Llc Data in motion storage system and method
CN106324758A (zh) * 2016-10-17 2017-01-11 苏州安捷讯光电科技股份有限公司 光纤回路器及其制作方法、光纤连接器及其制作方法
CA3101811A1 (en) 2018-08-02 2020-02-06 Lyteloop Technologies, Llc Apparatus and method for storing wave signals in a cavity
SG11202007731QA (en) 2018-08-10 2020-09-29 Lyteloop Technologies Llc System and method for extending path length of a wave signal using angle multiplexing
JP7238340B2 (ja) * 2018-10-30 2023-03-14 富士通オプティカルコンポーネンツ株式会社 光送受信器、これを用いた光トランシーバモジュール、及び光送受信器の試験方法
AU2019377800A1 (en) 2018-11-05 2021-03-18 Nkb Properties Management, Llc Systems and methods for building, operating and controlling multiple amplifiers, regenerators and transceivers using shared common components
US11733468B2 (en) 2021-12-08 2023-08-22 Viavi Solutions Inc. Photonic structure using optical heater

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179733B (en) * 1985-08-29 1989-08-09 Stc Plc Plural wavelength optical fibre reflectometer
US4911515A (en) * 1988-12-22 1990-03-27 Northern Telecom Limited Optical fiber communications system with optical fiber monitoring
GB8906937D0 (en) * 1989-03-28 1989-05-10 Plessey Telecomm Testing optical fibre links
US5093568A (en) * 1990-12-14 1992-03-03 John Maycock Monitoring system for fiber optic cables utilizing an OTDR for detection of signal loss and automatic location of faults in the cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112985774A (zh) * 2021-02-08 2021-06-18 厦门特仪科技有限公司 一种硅基Micro OLED微显示器高精度角度测试方法

Also Published As

Publication number Publication date
DE69225416T2 (de) 1998-12-03
JP2804633B2 (ja) 1998-09-30
EP0499529B1 (de) 1998-05-13
EP0499529A2 (de) 1992-08-19
US5319482A (en) 1994-06-07
EP0499529A3 (en) 1993-11-03
JPH04257099A (ja) 1992-09-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee