DE602004001078D1 - Optischer Verstärker mit Kontrollfunktionen des Pumplichts, und optisches Übertragungssystem das diesen Verstärker verwendet - Google Patents
Optischer Verstärker mit Kontrollfunktionen des Pumplichts, und optisches Übertragungssystem das diesen Verstärker verwendetInfo
- Publication number
- DE602004001078D1 DE602004001078D1 DE602004001078T DE602004001078T DE602004001078D1 DE 602004001078 D1 DE602004001078 D1 DE 602004001078D1 DE 602004001078 T DE602004001078 T DE 602004001078T DE 602004001078 T DE602004001078 T DE 602004001078T DE 602004001078 D1 DE602004001078 D1 DE 602004001078D1
- Authority
- DE
- Germany
- Prior art keywords
- amplifier
- optical
- transmission system
- pump light
- control functions
- 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
Links
- 230000003287 optical effect Effects 0.000 title 2
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
- H01S3/06758—Tandem amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
- H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
- H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
-
- 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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
- H04B10/2916—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using Raman or Brillouin amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0078—Frequency filtering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094096—Multi-wavelength pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/1001—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by controlling the optical pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10069—Memorized or pre-programmed characteristics, e.g. look-up table [LUT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1305—Feedback control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003068289 | 2003-03-13 | ||
JP2003068289A JP4318938B2 (ja) | 2003-03-13 | 2003-03-13 | 接続損失検出機能を備えた光増幅器 |
JP2003081796A JP2004287307A (ja) | 2003-03-25 | 2003-03-25 | ラマン増幅器およびそれを用いたシステム |
JP2003081796 | 2003-03-25 | ||
JP2003092873 | 2003-03-28 | ||
JP2003092873A JP4138551B2 (ja) | 2003-03-28 | 2003-03-28 | ラマン増幅器を用いた光伝送システム |
Publications (2)
Publication Number | Publication Date |
---|---|
DE602004001078D1 true DE602004001078D1 (de) | 2006-07-20 |
DE602004001078T2 DE602004001078T2 (de) | 2007-01-25 |
Family
ID=32830651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE602004001078T Expired - Lifetime DE602004001078T2 (de) | 2003-03-13 | 2004-03-12 | Optischer Verstärker mit Kontrollfunktionen des Pumplichts, und optisches Übertragungssystem das diesen Verstärker verwendet |
Country Status (4)
Country | Link |
---|---|
US (3) | US7505197B2 (de) |
EP (3) | EP1460737B1 (de) |
CN (1) | CN100487548C (de) |
DE (1) | DE602004001078T2 (de) |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3790455B2 (ja) * | 2001-10-12 | 2006-06-28 | 富士通株式会社 | 光中継器の監視制御方法および監視制御システム |
EP1388953B1 (de) * | 2002-08-05 | 2007-10-03 | Alcatel Lucent | Teilnehmeranschlusslokalisierung in einem Teilnehmeranschluss auf der Basis von Messungen des Reflexionszeitbereichs |
ATE321273T1 (de) * | 2002-10-18 | 2006-04-15 | Cit Alcatel | Signalvorverarbeitung zur bestimmung der eigenschaften einer übertragungsleitung |
JP4101024B2 (ja) * | 2002-11-06 | 2008-06-11 | 富士通株式会社 | ロスポイント有無判定方法及びそれを用いた分布型ラマン増幅装置 |
US7920793B2 (en) * | 2004-06-23 | 2011-04-05 | Nippon Telegraph And Telephone Corporation | Inline repeater and optical fiber communication system |
US20070103766A1 (en) * | 2004-10-26 | 2007-05-10 | Frriedrich Lars | Method for monitoring an optical transmission line by means of an optical amplifier and optical amplifier therefor |
JP4718557B2 (ja) * | 2004-12-14 | 2011-07-06 | ルナ イノベーションズ インコーポレイテッド | 干渉測定法における時間変化する位相の補償法 |
US20060227822A1 (en) * | 2005-03-29 | 2006-10-12 | Northrop Grumman Corporation | Laser trim pump |
WO2006137123A1 (ja) * | 2005-06-20 | 2006-12-28 | Fujitsu Limited | ラマン光増幅器 |
JP5012478B2 (ja) * | 2006-12-27 | 2012-08-29 | 富士通株式会社 | 分布ラマン増幅装置およびwdm光伝送システム |
CN101174903B (zh) * | 2007-10-30 | 2011-07-13 | 中兴通讯股份有限公司 | 基于双cpu的掺铒光纤放大器控制装置和系统 |
JP4476333B2 (ja) * | 2008-01-28 | 2010-06-09 | 富士通株式会社 | 光増幅装置および制御方法 |
JP4431179B2 (ja) * | 2008-02-04 | 2010-03-10 | 富士通株式会社 | 分布ラマン増幅システムおよびその立ち上げ方法ならびに光装置 |
EP2335363B1 (de) * | 2008-08-29 | 2018-05-30 | Telefonaktiebolaget LM Ericsson (publ) | Faserüberwachung in optischen netzwerken |
US8822895B2 (en) * | 2008-10-09 | 2014-09-02 | National Institute Of Information And Communications Technology | Fiber fuse detecting apparatus |
CN102055529B (zh) * | 2009-11-03 | 2014-03-12 | 华为技术有限公司 | 一种光信号处理方法、装置以及系统 |
CN101950913A (zh) * | 2010-08-12 | 2011-01-19 | 上海拜安实业有限公司 | 基于脉冲种子源放大的光纤激光光源及光纤传感系统 |
CN102064456B (zh) * | 2010-11-30 | 2011-12-28 | 中国科学院半导体研究所 | 用于光纤陀螺的掺铒超荧光光纤光源结构 |
CN103138842A (zh) * | 2011-11-24 | 2013-06-05 | 昂纳信息技术(深圳)有限公司 | 多泵浦拉曼光纤放大器功率控制装置 |
CN102494801B (zh) * | 2011-12-07 | 2013-05-29 | 电子科技大学 | 一种分布式光延迟光纤温度传感器 |
US9222850B2 (en) | 2013-03-14 | 2015-12-29 | Axonoptics, Llc | Integrated optics reflectometer |
US9557243B2 (en) | 2012-03-14 | 2017-01-31 | Axonoptics Llc | Integrated optics reflectometer |
US8817245B2 (en) * | 2012-08-23 | 2014-08-26 | Ciena Corporation | High-powered optical module safety systems and methods |
JP6244706B2 (ja) * | 2013-07-11 | 2017-12-13 | 富士通株式会社 | 多重光通信装置、多重光通信方法及び多重光通信プログラム |
CN103532616B (zh) * | 2013-09-29 | 2017-01-25 | 中国电子科技集团公司第四十一研究所 | 一体化光缆故障检测装置 |
JP6273806B2 (ja) | 2013-12-03 | 2018-02-07 | 富士通株式会社 | 光信号対雑音比モニタのための校正係数を生成する装置および方法 |
US9831943B2 (en) | 2013-12-17 | 2017-11-28 | Neptune Subsea Ip Limited | Repeater OTDR using repeater based raman pumps |
JP6324415B2 (ja) * | 2014-01-16 | 2018-05-16 | 三菱電機株式会社 | 励起光源装置及び光伝送システム |
WO2015142523A1 (en) * | 2014-03-19 | 2015-09-24 | Xtera Communications, Inc. | Multi-span optical communications link having remote optically pumped amplifier |
WO2015172328A1 (zh) * | 2014-05-14 | 2015-11-19 | 华为海洋网络有限公司 | 一种光中继器,及光纤通信系统 |
EP3178174A4 (de) * | 2014-08-06 | 2018-04-18 | Mox Networks LLC | Verteilte ramanverstärkersysteme |
US9793679B2 (en) | 2014-08-06 | 2017-10-17 | Mox Networks, LLC | Distributed Raman amplifier systems |
CN104466681B (zh) * | 2014-11-25 | 2018-12-25 | 武汉光迅科技股份有限公司 | 一种光纤放大器的串级控制系统 |
GB2536052A (en) * | 2015-03-06 | 2016-09-07 | Schlumberger Holdings | Optical Sensor |
CN107667489B (zh) * | 2015-05-28 | 2021-05-25 | 瑞典爱立信有限公司 | 用于监视光纤链路的装置和方法 |
US10497141B2 (en) * | 2016-01-06 | 2019-12-03 | Ams Sensors Singapore Pte. Ltd. | Three-dimensional imaging using frequency domain-based processing |
EP3413482B1 (de) * | 2016-02-05 | 2022-05-18 | Mitsubishi Electric Corporation | Vorrichtung zur erkennung der unterbrechung eines lichtsignals, optischer verstärker, optische wellenlängenmultiplex- übertragungsvorrichtung und optisches wellenlängenmultiplex-übertragungssystem |
CN108604930B (zh) | 2016-02-19 | 2021-02-02 | 三菱电机株式会社 | 激励光源装置及光传输系统 |
EP3217574A1 (de) * | 2016-03-09 | 2017-09-13 | Xieon Networks S.à r.l. | Bidirektionale und konfigurierbare, direktionale raman-pumpende vorrichtung |
WO2017178603A2 (en) * | 2016-04-15 | 2017-10-19 | Xieon Networks S.À R.L. | Codirectional ropa supplied with power via a separate fiber transmitting data in opposite direction |
CN107332101B (zh) * | 2017-06-28 | 2019-07-26 | 武汉光迅科技股份有限公司 | 一种可动态执行光时域反射检测的组件和检测方法 |
IL254803B2 (en) * | 2017-09-29 | 2023-09-01 | Prisma Photonics Ltd | Distributed amplification optimized for fiber sensing |
JP7077794B2 (ja) | 2018-06-04 | 2022-05-31 | 富士通株式会社 | ラマン光増幅器及びラマン光増幅方法 |
CN108768510B (zh) * | 2018-06-27 | 2021-01-08 | 武汉光迅科技股份有限公司 | 一种拉曼光纤放大器等效0km接头损耗获取方法和装置 |
CN109067464A (zh) * | 2018-09-11 | 2018-12-21 | 青岛海信宽带多媒体技术有限公司 | 光模块 |
CN109765034A (zh) * | 2019-03-20 | 2019-05-17 | 苏州珈全智能科技有限公司 | 一种φ-OTDR阈值自适应装置及方法 |
JP7464841B2 (ja) | 2020-08-04 | 2024-04-10 | 富士通株式会社 | ラマン増幅器の制御装置および制御方法 |
CN112217562B (zh) * | 2020-09-10 | 2022-03-11 | 武汉光迅科技股份有限公司 | 一种水下监测光传输系统 |
US11637635B1 (en) * | 2021-12-07 | 2023-04-25 | Ciena Corporation | Calibrating a Raman amplifier by maximizing gain and minimizing intermodulation effects |
CN114095078B (zh) * | 2022-01-21 | 2022-04-29 | 高勘(广州)技术有限公司 | 光纤传输检测系统及光纤传输检测方法 |
CN114826396B (zh) * | 2022-06-24 | 2022-09-30 | 北京中昱光通科技有限公司 | 一种监测拉曼放大器反射功率控制泵浦的方法及装置 |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9115453D0 (en) * | 1991-07-18 | 1991-09-04 | British Telecomm | Fault location in optical systems |
US5504617A (en) * | 1994-02-08 | 1996-04-02 | British Telecommunications Public Limited Company | Optical time domain reflectometry |
JPH0964446A (ja) | 1995-08-25 | 1997-03-07 | Furukawa Electric Co Ltd:The | 光増幅器とそれを用いた光増幅装置 |
US5673142A (en) | 1995-09-15 | 1997-09-30 | Lucent Technologies Inc. | Optical amplifier with internal input signal monitoring tap |
JP3411436B2 (ja) * | 1996-01-12 | 2003-06-03 | Kddi株式会社 | 光通信線路の監視方法 |
JPH09261187A (ja) * | 1996-03-19 | 1997-10-03 | Fujitsu Ltd | 無中継光伝送システムのリモートアンプおよび障害点標定方法 |
US6344922B1 (en) * | 1998-07-21 | 2002-02-05 | Corvis Corporation | Optical signal varying devices |
JP4115027B2 (ja) | 1998-07-23 | 2008-07-09 | 古河電気工業株式会社 | 励起光発生手段と、ラマン増幅器とそれを用いた光中継器 |
EP2306605B1 (de) * | 1998-07-23 | 2012-05-23 | The Furukawa Electric Co., Ltd. | Pumpeinheit für einen Ramanverstärker und Ramanverstärker, der dieselbe aufweist |
US6611370B2 (en) * | 1999-07-23 | 2003-08-26 | The Furukawa Electric Co., Ltd. | Raman amplifier system, apparatus and method for identifying, obtaining and maintaining an arbitrary Raman amplification performance |
US6364459B1 (en) | 1999-10-05 | 2002-04-02 | Eastman Kodak Company | Printing apparatus and method utilizing light-activated ink release system |
JP2001249369A (ja) | 2000-03-02 | 2001-09-14 | Nec Corp | 光増幅器とこれを用いた光増幅中継器及び波長多重光伝送装置 |
JP4057214B2 (ja) * | 2000-03-06 | 2008-03-05 | 富士通株式会社 | 分布型光増幅装置および該方法ならびに光通信システム |
JP3558124B2 (ja) | 2000-07-25 | 2004-08-25 | 住友電気工業株式会社 | ラマン増幅器及びそれを用いた光伝送システム |
JP4821037B2 (ja) | 2000-08-25 | 2011-11-24 | 富士通株式会社 | ラマン増幅を用いた光増幅器およびラマン励起光源 |
US6452715B1 (en) * | 2000-08-29 | 2002-09-17 | Ciena Corporation | Method and apparatus for determining a fiber plant gain transfer function and utilizing same to control distributed gain |
WO2002019023A1 (en) * | 2000-08-30 | 2002-03-07 | Fujitsu Limited | Light amplifier using raman amplification and control method thereof |
JP2002076482A (ja) | 2000-08-31 | 2002-03-15 | Fujitsu Ltd | 光増幅器,光増幅方法及び光増幅システム |
EP1229381A4 (de) * | 2000-09-07 | 2005-11-30 | Fujitsu Ltd | Optischer verstärker und optisches kommunikationssystem |
DE60044066D1 (de) * | 2000-09-07 | 2010-05-06 | Fujitsu Ltd | Optischer verstärker unter ausnutzung der ramanverstärkung |
CA2357498A1 (en) | 2001-02-05 | 2002-08-05 | Mikio Ogai | Raman amplifier system, apparatus and method for identifying, obtaining and maintaining an arbitrary raman amplification performance |
US6690504B1 (en) * | 2001-03-16 | 2004-02-10 | Tyco Telecommunications (Us) Inc. | System and method for controlling spectral distribution of output power in a Raman amplifier |
JP3587176B2 (ja) * | 2001-04-02 | 2004-11-10 | 日本電気株式会社 | ラマン増幅器及びラマン増幅方法 |
US6958856B2 (en) * | 2001-06-07 | 2005-10-25 | Sumitomo Electric Industries, Ltd. | Raman amplifier, raman amplifier control method, and optical communication system |
JP4549591B2 (ja) * | 2001-09-28 | 2010-09-22 | 富士通株式会社 | 装置 |
JP3899893B2 (ja) * | 2001-10-26 | 2007-03-28 | 日本電気株式会社 | ラマン増幅制御方法および光通信システムおよび光増幅装置およびプログラム |
JP3903768B2 (ja) * | 2001-10-31 | 2007-04-11 | 日本電気株式会社 | 光ファイバ伝送システムとラマン利得制御装置、及びラマン利得制御方法 |
WO2003084007A1 (fr) | 2002-03-28 | 2003-10-09 | Fujitsu Limited | Dispositif optique a fonction de compensation de perte et amplificateur optique de compensation de perte |
CN1481103A (zh) * | 2002-06-28 | 2004-03-10 | 住友电气工业株式会社 | 光传输系统 |
JP4094905B2 (ja) * | 2002-07-25 | 2008-06-04 | 富士通株式会社 | ラマン光増幅器 |
CN1270212C (zh) | 2002-09-16 | 2006-08-16 | 烽火通信科技股份有限公司 | 分布喇曼放大子系统及其装置 |
JP4101024B2 (ja) * | 2002-11-06 | 2008-06-11 | 富士通株式会社 | ロスポイント有無判定方法及びそれを用いた分布型ラマン増幅装置 |
JP3872023B2 (ja) | 2003-02-07 | 2007-01-24 | 日本電信電話株式会社 | 分布ラマン増幅を用いた光ファイバ通信システム |
US20040227931A1 (en) * | 2003-05-16 | 2004-11-18 | Russell Stuart John | Optic communication or transmission media sensing |
JP3878641B2 (ja) * | 2003-05-23 | 2007-02-07 | 富士通株式会社 | ラマン増幅による雑音光の補正機能を備えた光伝送システム |
US7554721B2 (en) * | 2003-08-01 | 2009-06-30 | Fujitsu Limited | Raman amplifier and Raman amplifier adjustment method |
-
2004
- 2004-03-12 DE DE602004001078T patent/DE602004001078T2/de not_active Expired - Lifetime
- 2004-03-12 EP EP04005961A patent/EP1460737B1/de not_active Expired - Fee Related
- 2004-03-12 EP EP05009322A patent/EP1560304B1/de not_active Expired - Lifetime
- 2004-03-12 US US10/798,267 patent/US7505197B2/en not_active Expired - Fee Related
- 2004-03-12 EP EP05009323A patent/EP1560305B1/de not_active Expired - Fee Related
- 2004-03-12 CN CNB2004100286804A patent/CN100487548C/zh not_active Expired - Fee Related
-
2009
- 2009-02-09 US US12/320,938 patent/US7719758B2/en not_active Expired - Fee Related
-
2010
- 2010-02-23 US US12/659,027 patent/US8054455B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1560305B1 (de) | 2012-07-18 |
US7505197B2 (en) | 2009-03-17 |
EP1560305A3 (de) | 2006-08-09 |
US8054455B2 (en) | 2011-11-08 |
EP1560304A2 (de) | 2005-08-03 |
EP1560304B1 (de) | 2012-01-11 |
CN1530729A (zh) | 2004-09-22 |
DE602004001078T2 (de) | 2007-01-25 |
EP1460737B1 (de) | 2006-06-07 |
US7719758B2 (en) | 2010-05-18 |
EP1560304A3 (de) | 2006-08-09 |
US20040196158A1 (en) | 2004-10-07 |
US20090219609A1 (en) | 2009-09-03 |
US20100157416A1 (en) | 2010-06-24 |
EP1460737A1 (de) | 2004-09-22 |
EP1560305A2 (de) | 2005-08-03 |
CN100487548C (zh) | 2009-05-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE602004001078D1 (de) | Optischer Verstärker mit Kontrollfunktionen des Pumplichts, und optisches Übertragungssystem das diesen Verstärker verwendet | |
DE60311921D1 (de) | Sterilisierung mit temperaturgeregelter Diffusionsstrecke | |
DE602004028987D1 (de) | Sicherheitssteuerung und System, das diese verwendet | |
DE60206203D1 (de) | Optischer Raman-Verstärker mit passenden Pumpquelle | |
DE60310824D1 (de) | Optisches Übertragungssystem | |
DE502005009789D1 (de) | Leuchteinheit mit Lichtquelle, Lichtleitkörper und Lichtumlenkbereich | |
FR2847894B1 (fr) | Verres optiques avec tg < 500°c, de preference sans pb et as | |
DE50313503D1 (de) | Katheter mit optischer Faser | |
DE602004010560D1 (de) | Optisches Projektionssystem mit variablem Projektionswinkel | |
DE60234795D1 (de) | Pumplichtquelleneinheit, Ramanverstärker und optisches Übertragungssystem | |
DE50300058D1 (de) | Fronthaube mit aktiver Sicherheit | |
DE602004004720D1 (de) | Optisches Übertragungssystem | |
DE502004008882D1 (de) | Verstärker mit endstufen-gesteuerter regelung | |
DE60330717D1 (de) | Optischer Modulator und diesen beinhaltendes Kommunikationssystem | |
DE602004009900D1 (de) | Optisches übertragungssystem | |
DE60312494D1 (de) | Optisch aktives pyridinderivat und medikament, das dieses enthält | |
DE60304800D1 (de) | Optischer Verstärker | |
DE60302015D1 (de) | Optischer Schalter mit verbessertem Faser-Justagesystem | |
DE60319891D1 (de) | Optischer Verstärker | |
ITMI20022028A1 (it) | Fenton i.s. | |
DE602004012218D1 (de) | Variabler optischer Abschwächer mit optischem Leistungsüberwacher | |
ITVI20030081A1 (it) | Occhiali con lenti del tipo senza montatura. | |
ES1056552Y (es) | Luminaria de transmision directa de la luz solar. | |
FR2856807B1 (fr) | Source lumineuse. | |
BR8100769Y1 (pt) | cadeira de rodas manual com lagarta. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |