DE69626074T2 - Optisches Übertragungssystem mit Messung des Spektrums eines Signals mit Wellenlängenmultiplex und Verarbeitung abhängig vom Spektrum - Google Patents

Optisches Übertragungssystem mit Messung des Spektrums eines Signals mit Wellenlängenmultiplex und Verarbeitung abhängig vom Spektrum

Info

Publication number
DE69626074T2
DE69626074T2 DE69626074T DE69626074T DE69626074T2 DE 69626074 T2 DE69626074 T2 DE 69626074T2 DE 69626074 T DE69626074 T DE 69626074T DE 69626074 T DE69626074 T DE 69626074T DE 69626074 T2 DE69626074 T2 DE 69626074T2
Authority
DE
Germany
Prior art keywords
spectrum
measurement
signal
transmission system
optical transmission
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
DE69626074T
Other languages
English (en)
Other versions
DE69626074D1 (de
Inventor
Hiroshi Onaka
Kazue Otsuka
Hideyuki Miyata
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69626074D1 publication Critical patent/DE69626074D1/de
Application granted granted Critical
Publication of DE69626074T2 publication Critical patent/DE69626074T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04B10/079—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
    • H04B10/0795—Performance monitoring; 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
    • H04B10/079—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
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07953—Monitoring or measuring OSNR, BER or Q
    • 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
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • 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
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07957—Monitoring or measuring wavelength
    • 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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/506—Multiwavelength transmitters
    • 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
    • H04B10/50—Transmitters
    • H04B10/564—Power control
    • 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
    • H04B10/50—Transmitters
    • H04B10/572—Wavelength control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0297—Optical equipment protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0284—WDM mesh architectures

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Spectrometry And Color Measurement (AREA)
DE69626074T 1995-08-23 1996-08-23 Optisches Übertragungssystem mit Messung des Spektrums eines Signals mit Wellenlängenmultiplex und Verarbeitung abhängig vom Spektrum Expired - Lifetime DE69626074T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7214733A JPH0964819A (ja) 1995-08-23 1995-08-23 光システム

Publications (2)

Publication Number Publication Date
DE69626074D1 DE69626074D1 (de) 2003-03-13
DE69626074T2 true DE69626074T2 (de) 2003-10-02

Family

ID=16660713

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69626074T Expired - Lifetime DE69626074T2 (de) 1995-08-23 1996-08-23 Optisches Übertragungssystem mit Messung des Spektrums eines Signals mit Wellenlängenmultiplex und Verarbeitung abhängig vom Spektrum

Country Status (4)

Country Link
US (1) US5894362A (de)
EP (1) EP0762677B1 (de)
JP (1) JPH0964819A (de)
DE (1) DE69626074T2 (de)

Families Citing this family (130)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3006519B2 (ja) * 1996-11-22 2000-02-07 日本電気株式会社 光通信システム
JPH10164018A (ja) * 1996-11-26 1998-06-19 Fujitsu Ltd 光送信機並びに該光送信機を有する端局装置及び光通信システム
JP3075200B2 (ja) 1996-12-10 2000-08-07 日本電気株式会社 信号光モニタとこれを用いた光増幅器
JPH10229386A (ja) * 1997-02-17 1998-08-25 Nec Corp 光ファイバアンプとこれを用いた光通信システム
US5978119A (en) * 1997-02-18 1999-11-02 Lucent Technologies Inc. System and method for synchronizing an optical source and a router in a wavelength division multiplexed fiber optic network
GB9706370D0 (en) * 1997-03-27 1997-05-14 British Telecomm An optical memory
JP4553987B2 (ja) * 1997-03-27 2010-09-29 ブリティッシュ・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 光メモリ
US5898801A (en) 1998-01-29 1999-04-27 Lockheed Martin Corporation Optical transport system
JP3992811B2 (ja) * 1997-08-01 2007-10-17 富士通株式会社 光伝送システム及び送信端局
US5923450A (en) * 1998-09-30 1999-07-13 Alcatel Network Systems, Inc. Optical channel regulator and method
JP3522509B2 (ja) * 1997-10-17 2004-04-26 富士通株式会社 光伝送装置及び光通信システム
US6120190A (en) * 1997-11-26 2000-09-19 Lasertron, Inc. Spatially variable bandpass filter monitoring and feedback control of laser wavelength especially in wavelength division multiplexing communication systems
JP3166695B2 (ja) * 1998-01-05 2001-05-14 日本電気株式会社 波長分割多重送信装置
US6441955B1 (en) 1998-02-27 2002-08-27 Fujitsu Limited Light wavelength-multiplexing systems
JP3607497B2 (ja) * 1998-03-17 2005-01-05 日本電気株式会社 利得等化器と利得等化機能を備えた光増幅装置
KR100312224B1 (ko) 1998-07-02 2001-12-20 윤종용 파장 분할 다중 광 전송장치에서 광 신호 대 잡음비 측정장치
US6457080B1 (en) * 1998-09-16 2002-09-24 Mci Communications Corporation Virtual bearer high-speed communication channel-to-device interface
US6606174B1 (en) * 1998-09-30 2003-08-12 Sanyo Electric Co., Ltd. Optical semiconductor device
DE19845701A1 (de) * 1998-10-05 2000-04-06 Palme Dieter Anordnungen zur Überwachung der Performance von DWDM-Mehrwellenlängensystemen
EP0996243A1 (de) * 1998-10-23 2000-04-26 Koninklijke KPN N.V. Verfahren und Vorrichtung zur Überwachung eines optischen Wellenlängenmultiplexierten Netzwerks
KR100319744B1 (ko) * 1998-11-09 2002-02-19 오길록 파장선택형광검출기를이용한파장분할다중화된광신호의채널정보검출장치및그방법
KR100322125B1 (ko) * 1999-01-14 2002-02-04 윤종용 배열격자도파로 모듈 및 이를 이용한 광신호 모니터링 장치
KR100322124B1 (ko) 1999-01-14 2002-02-04 윤종용 광신호 모니터링 장치 및 방법
KR100317140B1 (ko) * 1999-08-20 2001-12-22 윤덕용 파장분할다중 광통신에서 광신호의 파장과 광 세기와 광 신호대 잡음비를 측정하는 장치
AU769509B2 (en) * 1999-07-09 2004-01-29 Sumitomo Electric Industries, Ltd. Optical amplifier and optical amplifying method
US6473210B1 (en) * 1999-08-20 2002-10-29 Anritsu Company Method for measuring the performance of broadband dense wavelength division multiplexer (DWDM) using non-linear iterative algorithm
JP4498509B2 (ja) * 1999-11-16 2010-07-07 富士通株式会社 波長多重用光アンプの制御装置および制御方法
JP4567830B2 (ja) * 1999-11-29 2010-10-20 三菱電機株式会社 光波長多重伝送方式
JP2001186107A (ja) * 1999-12-24 2001-07-06 Fujitsu Ltd レベル調整方法並びにその方法を利用する波長多重伝送装置及びシステム
JP2001203414A (ja) * 2000-01-18 2001-07-27 Fujitsu Ltd 光信号対雑音比測定方法、並びに、該測定方法を利用した光信号対雑音比測定装置、プリエンファシス方法、光通信システム、測定回路、および、制御装置
US6760532B1 (en) 2000-01-28 2004-07-06 Ciena Corporation Optical device having dynamic channel equalization
EP1126650A3 (de) * 2000-02-18 2007-01-03 Ericsson AB Vorrichtung zur optischen Kommunikation
US20010015837A1 (en) * 2000-02-23 2001-08-23 Micro Photonix Integration Corporation EDFL multiple wavelelngth laser source
WO2001063802A1 (en) * 2000-02-23 2001-08-30 Tedram Optical Networks, Inc. Multiple wavelength laser source
US6501866B2 (en) * 2000-02-25 2002-12-31 Mahi Networks. Inc. Method and apparatus for cross-connecting optical transmission signals
US6421167B1 (en) 2000-03-03 2002-07-16 General Dynamics Advanced Technology Systems, Inc. Multiple function bandwidth management systems
US6782209B2 (en) * 2000-03-03 2004-08-24 Corvis Corporation Optical transmission systems including optical amplifiers and methods
IL135715A (en) * 2000-04-18 2004-02-19 Lightscape Networks Ltd Optical transmitter-transponder
JP3829910B2 (ja) * 2000-06-29 2006-10-04 横河電機株式会社 波長多重信号光の解析方法及びその装置
WO2002007272A2 (en) * 2000-07-17 2002-01-24 Optigain, Inc. Control system for fiber laser or amplifier
DE10040472A1 (de) * 2000-08-18 2002-03-07 Siemens Ag Optische Verstärkeranordnung mit einem variabel einstellbaren Dämpfungsglied
KR100346221B1 (ko) * 2000-09-06 2002-08-01 삼성전자 주식회사 어븀첨가 광섬유 증폭기의 이득 제어 장치 및 방법
US6772102B1 (en) 2000-09-13 2004-08-03 Illinois Institute Of Technology Optimal placement of wavelength converters in trees and trees of rings
US6735395B1 (en) * 2000-09-29 2004-05-11 Futurewei Technologies, Inc. WDM communication system utilizing WDM optical sources with stabilized wavelengths and light intensity and method for stabilization thereof
US20020101874A1 (en) * 2000-11-21 2002-08-01 Whittaker G. Allan Physical layer transparent transport information encapsulation methods and systems
US6859622B1 (en) * 2000-12-26 2005-02-22 Nortel Networks Limited Predictive optimization of wavelength division multiplexed systems
US20020122224A1 (en) * 2000-12-27 2002-09-05 Yigal Rappaport Method and apparatus for generating a wavelength division multiplexed signal having a level correction signal
US7181146B1 (en) * 2001-01-17 2007-02-20 Optical Communication Products, Inc. Self-adjusting data transmitter
US20020126347A1 (en) * 2001-03-07 2002-09-12 Hogan Josh N. High data rate multiple wavelength encoding
US6907197B2 (en) * 2001-03-12 2005-06-14 Nortel Networks Limited Method and apparatus for measuring and estimating optical signal to noise ratio in photonic networks
DE10113563B4 (de) * 2001-03-20 2007-03-01 Siemens Ag Vorrichtung und Verfahren zur Regeneration optischer Signale sowie optisches Nachrichtenübertragungsnetzwerk
US7174100B1 (en) * 2001-04-02 2007-02-06 Finisar Corporation Method and system for performing OTDM
US6600596B2 (en) * 2001-05-09 2003-07-29 Ciena Corporation Method and system for controlling amplifier power in an optical communications network having add/drop capability
WO2002091027A2 (en) * 2001-05-09 2002-11-14 Ciena Corporation Method and system for controlling amplifier power in an optical communications network having add/drop capability
US6614589B2 (en) 2001-05-09 2003-09-02 Ciena Corporation Method and system for controlling amplifier power in an optical communications network
US6559985B1 (en) 2001-05-09 2003-05-06 Ciena Corporation Method and system for determining channel power in an optical communications network
US7242863B2 (en) 2001-05-09 2007-07-10 Ciena Corporation Method and system for coordinating and utilizing channel power information in an optical communications network
US6915076B1 (en) * 2001-05-14 2005-07-05 Ciena Corporation System and method for adaptively selecting a signal threshold of an optical link
JP3779176B2 (ja) * 2001-05-16 2006-05-24 富士通株式会社 光伝送装置及び波長多重通信システム
US7495765B2 (en) * 2001-05-17 2009-02-24 Thorlabs Gmbh Fiber polarimeter, the use thereof, as well as polarimetric method
US6816260B2 (en) * 2001-05-17 2004-11-09 Thorlabs Gmbh Fiber polarimeter, the use thereof, as well as polarimetric method
US7253897B2 (en) 2001-06-01 2007-08-07 Cidra Corporation Optical spectrum analyzer
US7463828B2 (en) * 2001-06-01 2008-12-09 John Moon Optical channel monitor
JP4665344B2 (ja) * 2001-06-04 2011-04-06 株式会社日立製作所 波長間レベル偏差や光ｓｎ偏差を補償する光伝送装置
JP4686906B2 (ja) * 2001-06-04 2011-05-25 株式会社日立製作所 波長多重用光伝送装置
JP2003008647A (ja) * 2001-06-18 2003-01-10 Ando Electric Co Ltd プローブ装置
JP2003008117A (ja) * 2001-06-27 2003-01-10 Fujitsu Ltd 光増幅ブロックとこれを用いる光増幅システム
US7831151B2 (en) * 2001-06-29 2010-11-09 John Trezza Redundant optical device array
US6697159B2 (en) 2001-07-17 2004-02-24 The University Of Kansas Optical domain signal analyzer
JP4651231B2 (ja) * 2001-07-26 2011-03-16 富士通株式会社 光伝送システム
US20030026199A1 (en) * 2001-08-03 2003-02-06 Myers Michael H. Code-division, minimum-shift-keying optical multiplexing
US7039319B1 (en) * 2001-08-07 2006-05-02 Cisco Technology, Inc. DWDM laser frequency control
US6907051B1 (en) * 2001-08-31 2005-06-14 Nlight Photonics Corporation Dynamically spectrally tailored raman pump laser
US7295783B2 (en) * 2001-10-09 2007-11-13 Infinera Corporation Digital optical network architecture
US7672546B2 (en) * 2001-10-09 2010-03-02 Infinera Corporation Optical transport network having a plurality of monolithic photonic integrated circuit semiconductor chips
US7751658B2 (en) * 2001-10-09 2010-07-06 Infinera Corporation Monolithic transmitter photonic integrated circuit (TxPIC) having tunable modulated sources with feedback system for source power level or wavelength tuning
US20080044128A1 (en) * 2001-10-09 2008-02-21 Infinera Corporation TRANSMITTER PHOTONIC INTEGRATED CIRCUITS (TxPICs) AND OPTICAL TRANSPORT NETWORK SYSTEM EMPLOYING TxPICs
WO2003032547A2 (en) * 2001-10-09 2003-04-17 Infinera Corporation Transmitter photonic integrated circuit
US7116851B2 (en) 2001-10-09 2006-10-03 Infinera Corporation Optical signal receiver, an associated photonic integrated circuit (RxPIC), and method improving performance
US7680364B2 (en) * 2001-10-09 2010-03-16 Infinera Corporation Wavelength locking and power control systems for multi-channel photonic integrated circuits (PICS)
JP4128356B2 (ja) 2001-12-28 2008-07-30 富士通株式会社 光デバイスの制御装置
JP3990228B2 (ja) * 2002-08-15 2007-10-10 富士通株式会社 光送信装置
US20040076434A1 (en) * 2002-09-27 2004-04-22 Whittaker G. Allan Optical distribution network for RF and other analog signals
US6912339B2 (en) * 2002-09-27 2005-06-28 Lockheed Martin Corporation Optical interface devices having balanced amplification
US7747114B2 (en) * 2002-10-08 2010-06-29 Infinera Corporation Tilted combiners/decombiners and photonic integrated circuits (PICs) employing the same
EP1573965A1 (de) * 2002-12-17 2005-09-14 Xyratex Technology Limited Netzwerkanzapfmodul
US6937798B1 (en) * 2003-01-17 2005-08-30 General Photonics Corporation Optical spectrum monitor
JP2006086955A (ja) * 2004-09-17 2006-03-30 Fujitsu Ltd 伝送特性評価システムおよびその擬似伝送路装置
US7570887B2 (en) * 2003-03-31 2009-08-04 Lockheed Martin Corporation Optical network interface systems and devices
JP4622216B2 (ja) * 2003-08-21 2011-02-02 横河電機株式会社 光スペクトラムアナライザ
US20050191052A1 (en) * 2004-02-26 2005-09-01 Karl Schrodinger Optical emission module
JP2005341529A (ja) * 2004-04-28 2005-12-08 Fujitsu Ltd 光伝送システム，光送受信装置，光伝送装置および光波長チャンネル接続認識制御方法
US20060049341A1 (en) * 2004-09-06 2006-03-09 National Central University Method for examining corrosion of a steel reinforcement rod embedded in concrete
GB2420460B (en) * 2004-11-17 2009-04-08 Marconi Comm Ltd Monitoring of optical signals
WO2006085375A1 (ja) * 2005-02-10 2006-08-17 Fujitsu Limited 波長分割多重装置
CA2550369A1 (en) * 2005-06-17 2006-12-17 Virtek Vision International Inc. Multiple head laser projector and method
US7693419B1 (en) 2005-11-23 2010-04-06 General Photonics Corporation Optical spectrum analysis using optical interferometry
JP4435741B2 (ja) * 2006-01-18 2010-03-24 富士通株式会社 光伝送装置
JP4892262B2 (ja) * 2006-03-23 2012-03-07 富士通株式会社 光源波長制御装置
JP4935279B2 (ja) * 2006-09-28 2012-05-23 富士通株式会社 Ｏｓｎｒ測定装置およびｏｓｎｒ測定方法
JP4864771B2 (ja) * 2007-03-06 2012-02-01 日本電信電話株式会社 光信号モニタ装置、光システム及び光信号モニタ方法
US8345238B2 (en) * 2008-02-04 2013-01-01 General Photonics Corporation Measuring optical spectral property of light based on polarization analysis
JP5056664B2 (ja) * 2008-08-08 2012-10-24 富士通株式会社 波長選択光スイッチ
JP5476697B2 (ja) 2008-09-26 2014-04-23 富士通株式会社 光信号送信装置
JP5321041B2 (ja) * 2008-12-24 2013-10-23 富士通株式会社 光分岐挿入装置およびｗｄｍ伝送方法
JP2010226587A (ja) * 2009-03-25 2010-10-07 Nec Corp 光信号検出装置および光信号検出方法
JP5617550B2 (ja) * 2010-11-12 2014-11-05 富士通株式会社 光伝送装置、光伝送システム及び光伝送方法
US9059799B2 (en) * 2011-04-21 2015-06-16 Futurewei Technologies, Inc. Apparatus and method to calculate a noise figure of an optical amplifier for wavelength channels in a partial-fill scenario to account for channel loading
US9215010B2 (en) * 2011-09-02 2015-12-15 Nec Corporation Node device, and control method and control program thereof
US9400246B2 (en) 2011-10-11 2016-07-26 Kla-Tencor Corporation Optical metrology tool equipped with modulated illumination sources
US9419742B2 (en) * 2011-12-30 2016-08-16 Infinera Corporation Optical communication system having tunable sources
JP5445603B2 (ja) * 2012-03-09 2014-03-19 富士通株式会社 可変分散補償制御方法及び可変分散補償制御装置
WO2013183154A1 (ja) * 2012-06-07 2013-12-12 富士通株式会社 光検出装置、光検出方法および光送信装置
JP5994508B2 (ja) * 2012-09-18 2016-09-21 富士通株式会社 送信装置、通信システム、及び送信レベルの制御方法
US10205520B2 (en) * 2013-03-26 2019-02-12 Accelink Technologies Co., Ltd. Method and device for measuring optical signal-to-noise ratio
JP6244670B2 (ja) * 2013-06-03 2017-12-13 富士通株式会社 光伝送装置、光伝送システム、及び警報機能の試験方法
MY165534A (en) * 2013-08-30 2018-04-02 Univ Malaya All fiber based diaphragm-less optical microphone
US9577761B2 (en) * 2013-12-27 2017-02-21 Infinera Corporation Controlling an optical transmitter that supports multiple modulation formats and baud rates
JP6427992B2 (ja) * 2014-06-30 2018-11-28 富士通株式会社 光伝送システム、送信機、受信機、及び、光伝送方法
CN104243018B (zh) * 2014-07-25 2017-08-25 武汉光盈科技有限公司 一种色散测量系统
US9722700B2 (en) * 2014-07-25 2017-08-01 Nec Corporation Wavelength division multiplexing system and method including wavelength monitoring
JP6561445B2 (ja) * 2014-09-30 2019-08-21 富士通株式会社 光増幅装置、光伝送装置、及び、光伝送システム
US10432341B2 (en) * 2017-07-12 2019-10-01 Electronics And Telecommunications Research Institute Transmitter for transmitting optical signal in optical communication system and method of operating the same
KR102126238B1 (ko) * 2017-07-12 2020-06-24 한국전자통신연구원 광통신 시스템에서 광신호를 송신하기 위한 송신기 및 그의 동작 방법
US11076462B2 (en) 2019-10-23 2021-07-27 Toshiba Global Commerce Solutions Holdings Corporation Remote counting of serially connected components using a controller
US20230155675A1 (en) * 2020-05-14 2023-05-18 Nec Corporation Failure detection device, failure detection method, and failure-detection-program recording medium
CN112134617A (zh) * 2020-09-21 2020-12-25 北京基准线科技有限公司 光谱光载波信号检测装置
JP2022128895A (ja) * 2021-02-24 2022-09-05 富士通株式会社 波長変換器、伝送装置及び伝送システム
US11536916B1 (en) * 2021-05-10 2022-12-27 Amazon Technologies, Inc. Pathloss optimization for optical systems
CN113804178B (zh) * 2021-08-20 2023-02-24 北京航天时代光电科技有限公司 基于双铒源冗余设计的高精度、小型化三轴一体光纤陀螺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8501782D0 (en) * 1985-01-24 1985-02-27 British Telecomm Wavelength division multiplexed networks
GB2202404B (en) * 1987-03-13 1991-01-02 Plessey Co Plc Apparatus for optical wavelength division multiplexing
US4993032A (en) * 1989-12-28 1991-02-12 General Dynamics Corp., Electronics Divn. Monolithic temperature stabilized optical tuning circuit for channel separation in WDM systems utilizing tunable lasers
JP2772605B2 (ja) * 1992-10-15 1998-07-02 国際電信電話株式会社 光周波数多重キャリヤ制御装置
CA2155693C (en) * 1994-08-25 1999-12-14 Daniel A. Fishman Performance monitoring and fault location in optical transmission systems
US5617234A (en) * 1994-09-26 1997-04-01 Nippon Telegraph & Telephone Corporation Multiwavelength simultaneous monitoring circuit employing arrayed-waveguide grating
US5563731A (en) * 1995-02-22 1996-10-08 Nec Corporation Monitor control signal receiving apparatus for optical fiber amplifier

Also Published As

Publication number Publication date
DE69626074D1 (de) 2003-03-13
EP0762677A2 (de) 1997-03-12
EP0762677A3 (de) 2000-12-06
US5894362A (en) 1999-04-13
EP0762677B1 (de) 2003-02-05
JPH0964819A (ja) 1997-03-07

Similar Documents

Publication Publication Date Title
DE69626074D1 (de) Optisches Übertragungssystem mit Messung des Spektrums eines Signals mit Wellenlängenmultiplex und Verarbeitung abhängig vom Spektrum
DE69627416T2 (de) Lichtsensor für Transmissionsmessungen an Gewebe
AU2367695A (en) Multiple integrated laser engagement system employing fiber optic detection signal transmission
FR2738343B1 (fr) Dispositif de microstratigraphie optique
DE69601815D1 (de) Bidirektionelles optisches Übertragungssystem mit bidirektionalem optischem Verstärker
FR2740228B1 (fr) Dispositif de branchement optique sous-marin
DE69029072D1 (de) Optischer Verstärker und optisches Übertragungssystem mit dem optischen Verstärker
GB9619038D0 (en) Optical fiber characteristic measuring device
FR2714488B1 (fr) Dispositif optique d'élaboration de signaux pour turbomachines.
FR2709837B1 (fr) Appareil de mesure optique de distance, et lentille et élément photorécepteur pour sa mise en Óoeuvre.
FR2712982B1 (fr) Dispositif de mesure différentielle de couple.
DE69513139D1 (de) Einfaches Transmissionsmessgerät
DE59602871D1 (de) Optische sende- und empfangsanordnung
CA2240523A1 (en) Optical measuring method and optical measuring arrangement for measuring a periodic quantity using intensity normalizaton
DE69429031D1 (de) Optisches Signalübertragungsnetzwerk
DE19581595T1 (de) Signalübertragungsvorrichtung mit mehreren LSIs
DE59611213D1 (de) Vorrichtung zur optischen signalübertragung
BR9605265A (pt) Disposiçao para transmissao de sinais através de um barramento coletor de campo
BR9605031A (pt) Dispositivo para transmissão de sinais
DE69619489D1 (de) Optische Signalübertragung
KR970014964U (ko) 회전체의 신호전달 장치
FR2743233B1 (fr) Systeme de repartition de signaux optiques
FR2694083B1 (fr) Boîtier de protection et de référence pour capteur de mesure.
FR2743458B1 (fr) Circuit de transmission de signaux
FR2746192B1 (fr) Dispositif optique non-lineaire de traitement de signaux optiques

Legal Events

Date Code Title Description
8364 No opposition during term of opposition