DE69423152D1 - Optisches Übertragungssystem mit Wellenlängenmultiplexierung und optischer Verstärkung - Google Patents
Optisches Übertragungssystem mit Wellenlängenmultiplexierung und optischer VerstärkungInfo
- Publication number
- DE69423152D1 DE69423152D1 DE69423152T DE69423152T DE69423152D1 DE 69423152 D1 DE69423152 D1 DE 69423152D1 DE 69423152 T DE69423152 T DE 69423152T DE 69423152 T DE69423152 T DE 69423152T DE 69423152 D1 DE69423152 D1 DE 69423152D1
- Authority
- DE
- Germany
- Prior art keywords
- optical
- transmission system
- division multiplexing
- wavelength division
- 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 - Fee Related
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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
- H04B10/296—Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input 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
- H04B10/29—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9315912A GB2280561B (en) | 1993-07-31 | 1993-07-31 | Optical transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69423152D1 true DE69423152D1 (de) | 2000-04-06 |
DE69423152T2 DE69423152T2 (de) | 2000-07-06 |
Family
ID=10739785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69423152T Expired - Fee Related DE69423152T2 (de) | 1993-07-31 | 1994-07-28 | Optisches Übertragungssystem mit Wellenlängenmultiplexierung und optischer Verstärkung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5463487A (de) |
EP (1) | EP0637148B1 (de) |
DE (1) | DE69423152T2 (de) |
GB (1) | GB2280561B (de) |
Families Citing this family (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3379052B2 (ja) * | 1994-09-26 | 2003-02-17 | 富士通株式会社 | 波長多重光増幅装置及び光波長多重伝送システム及び光波長多重伝送方法 |
JP3306693B2 (ja) | 1995-01-19 | 2002-07-24 | 富士通株式会社 | 光増幅装置,光波長多重通信システム,光端局装置及び光中継装置 |
JP3770635B2 (ja) * | 1995-06-20 | 2006-04-26 | 富士通株式会社 | 不要強度変調成分抑圧機能を有する光受信機 |
JP2871547B2 (ja) * | 1995-09-08 | 1999-03-17 | 日本電気株式会社 | 光スペクトルアナライザ装置および光増幅器の制御方法 |
GB9518922D0 (en) * | 1995-09-15 | 1995-11-15 | Integrated Optical Components | Controlling optical signals |
JP3363003B2 (ja) * | 1995-10-03 | 2003-01-07 | 株式会社日立製作所 | 光増幅装置及び光増幅装置を用いた光伝送システム |
JP3739453B2 (ja) * | 1995-11-29 | 2006-01-25 | 富士通株式会社 | 光増幅器及び該光増幅器を備えた光通信システム |
FR2743233B1 (fr) * | 1995-12-28 | 1998-01-23 | Alcatel Nv | Systeme de repartition de signaux optiques |
JPH09185091A (ja) * | 1995-12-28 | 1997-07-15 | Nec Corp | 波長多重光伝送装置 |
US6108113A (en) * | 1995-12-29 | 2000-08-22 | Mci Communications Corporation | Method and system for transporting ancillary network data |
JP3739471B2 (ja) | 1996-03-01 | 2006-01-25 | 富士通株式会社 | 光可変減衰器 |
JP2976874B2 (ja) * | 1996-03-08 | 1999-11-10 | 日本電気株式会社 | 光受信装置 |
JP2910667B2 (ja) * | 1996-04-09 | 1999-06-23 | 日本電気株式会社 | 線形中継光増幅伝送装置 |
US6025947A (en) * | 1996-05-02 | 2000-02-15 | Fujitsu Limited | Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied |
JPH09321701A (ja) * | 1996-05-31 | 1997-12-12 | Fujitsu Ltd | 光通信システム及び光増幅器 |
JPH09326770A (ja) * | 1996-06-06 | 1997-12-16 | Nec Corp | 波長分割多重伝送システムに用いられる線形中継器 |
JP2904131B2 (ja) * | 1996-07-04 | 1999-06-14 | 日本電気株式会社 | 波長多重光増幅装置と波長多重光伝送装置 |
US6175436B1 (en) * | 1996-07-30 | 2001-01-16 | Tellium, Inc. | Automatic feedback gain control for multiple channels in a doped optical fiber amplifier |
JP3006500B2 (ja) * | 1996-08-01 | 2000-02-07 | 日本電気株式会社 | 波長多重光伝送用光増幅装置 |
SE514609C2 (sv) | 1996-09-13 | 2001-03-19 | Ericsson Telefon Ab L M | System och förfarande för reglering av uteffekten hos en optisk förstärkare |
SE9603337L (sv) | 1996-09-13 | 1997-12-15 | Ericsson Telefon Ab L M | Transmissionssystem med återkopplad optisk förstärkare |
US5907420A (en) * | 1996-09-13 | 1999-05-25 | Lucent Technologies, Inc. | System and method for mitigating cross-saturation in optically amplified networks |
US5699081A (en) * | 1996-09-26 | 1997-12-16 | Lucent Technologies Inc. | Apparatus and method for automatically provisioning power on a per channel basis in a communications transmission system |
JP2991131B2 (ja) * | 1996-10-07 | 1999-12-20 | 日本電気株式会社 | 信号光チャネル数計数器とこれを用いた光増幅装置 |
US5719697A (en) * | 1996-10-10 | 1998-02-17 | At&T Submarine Systems, Inc. | Method and apparatus for combining add/drop optical signal lines from a plurality of branching units |
JP2914334B2 (ja) * | 1997-01-20 | 1999-06-28 | 日本電気株式会社 | 光波長多重通信システムの光増幅器出力レベル制御方式 |
SE509968C2 (sv) * | 1997-02-14 | 1999-03-29 | Ericsson Telefon Ab L M | Optisk förstärkare med variabel förstärkning |
US5900969A (en) * | 1997-02-14 | 1999-05-04 | Lucent Technologies Inc. | Broadband flat gain optical amplifier |
JP3860278B2 (ja) * | 1997-03-13 | 2006-12-20 | 富士通株式会社 | 遠隔励起方式の波長多重光伝送システム |
JP4240551B2 (ja) * | 1997-03-19 | 2009-03-18 | 富士通株式会社 | 光増幅装置 |
JP3068500B2 (ja) * | 1997-04-25 | 2000-07-24 | 日本電気株式会社 | 光信号増幅伝送方式 |
JPH10303821A (ja) * | 1997-04-25 | 1998-11-13 | Nec Corp | 光信号増幅伝送方式 |
JPH10341206A (ja) * | 1997-06-06 | 1998-12-22 | Nec Corp | 波長多重伝送装置 |
US5923450A (en) * | 1998-09-30 | 1999-07-13 | Alcatel Network Systems, Inc. | Optical channel regulator and method |
JP3050304B2 (ja) * | 1997-12-04 | 2000-06-12 | 日本電気株式会社 | 光adm装置 |
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 |
EP0975103B1 (de) | 1998-02-06 | 2006-08-09 | Fujitsu Limited | Optischer verstärker und verfahren zur steuerung der lichtquellenerregung von einem optischen verstärker |
US6124957A (en) * | 1998-02-13 | 2000-09-26 | Lucent Technologies Inc. | Optical signal translator unit |
US6441955B1 (en) | 1998-02-27 | 2002-08-27 | Fujitsu Limited | Light wavelength-multiplexing systems |
US6496300B2 (en) | 1998-02-27 | 2002-12-17 | Fujitsu Limited | Optical amplifier |
KR20000042660A (ko) * | 1998-12-26 | 2000-07-15 | 서평원 | 광중계 시스템의 이득제어방법 |
IL128557A (en) | 1999-02-16 | 2003-04-10 | Eci Telecom Ltd | Wave division multiplexing communications system |
US6236481B1 (en) | 1999-06-09 | 2001-05-22 | Astarte Fiber Networks, Inc. | Method and apparatus for providing loss equalization and adjustment in a fiber optic network |
GB2352104B (en) * | 1999-07-15 | 2003-01-15 | Marconi Comm Ltd | Communications systems |
DE60036774T2 (de) * | 1999-07-30 | 2008-07-24 | Mitsubishi Denki K.K. | Optischer verstärkungswiederholer und optischer verstärkungswiederholer und übertragungsanordnung |
FR2800217B1 (fr) * | 1999-10-25 | 2002-10-11 | Cit Alcatel | Systeme de transmission optique a signaux de charge sdh ou fec, avec une surmodulation de sous porteuse optimisee |
AU781588B2 (en) * | 2000-01-17 | 2005-06-02 | University Of Sydney, The | Method and apparatus for monitoring of data channels |
AUPQ511700A0 (en) * | 2000-01-17 | 2000-02-10 | University Of Sydney, The | Method and apparatus for monitoring of data channels |
US6760532B1 (en) | 2000-01-28 | 2004-07-06 | Ciena Corporation | Optical device having dynamic channel equalization |
DE10046104C2 (de) * | 2000-09-18 | 2002-08-29 | Siemens Ag | Verfahren und Vorrichtung zur Erkennung von Leitungsunterbrechungen in einem optischen WDM-System |
US6961522B1 (en) | 2000-11-22 | 2005-11-01 | Cisco Technology, Inc. | Automatic raman gain and tilt control for ultra-long-distance dense WDM optical communication system |
US6542287B1 (en) * | 2000-12-12 | 2003-04-01 | Onetta, Inc. | Optical amplifier systems with transient control |
US6941079B1 (en) | 2001-05-24 | 2005-09-06 | Cisco Technology, Inc. | Optical demultiplexer with multi-channel power control and tilt compensation |
WO2003001706A1 (en) * | 2001-06-22 | 2003-01-03 | Tellabs Operations, Inc. | System and method for measuring power of optical signals carried over a fiber optic link |
US7113705B2 (en) * | 2001-06-29 | 2006-09-26 | Tellabs Operations, Inc. | Methods and apparatus for sensing multiple wavelengths simultaneously in a single wavelength sensing device |
GB2402282B (en) * | 2001-07-26 | 2005-05-04 | Fujitsu Ltd | Optical repeater |
JP4651231B2 (ja) * | 2001-07-26 | 2011-03-16 | 富士通株式会社 | 光伝送システム |
US6980736B1 (en) | 2002-01-03 | 2005-12-27 | Mci, Inc. | Verification of path integrity in optical switch network |
DE10202143A1 (de) * | 2002-01-21 | 2003-08-14 | Siemens Ag | Anordnung und Verfahren zur Begrenzung von Übertragungskapazität auf einer Datenübertragungsstrecke |
US20040017603A1 (en) * | 2002-07-29 | 2004-01-29 | Paul Jay | Optical amplifier controller |
US7031050B2 (en) | 2002-08-14 | 2006-04-18 | Tropic Networds Inc. | Method and system for precision cross-talk cancellation in optical amplifiers |
US7412166B2 (en) * | 2003-04-30 | 2008-08-12 | Tellabs Operations, Inc. | Pilot tones for optical signal wavelength identification and power measurement |
US7009761B2 (en) * | 2003-05-29 | 2006-03-07 | Fujitsu Limited | Power tilt compensation using automatic power balance control |
US7027210B2 (en) * | 2003-05-29 | 2006-04-11 | Fujitsu Limited | Method and system for determining gain for an optical signal |
US7974317B2 (en) * | 2007-12-20 | 2011-07-05 | Qualcomm Incorporated | Systems and methods for controlling the voltage of signals used to control power amplifiers |
JP5177035B2 (ja) * | 2009-03-19 | 2013-04-03 | 日本電気株式会社 | 波長分割多重装置、波長分割多重伝送システムおよび波長多重信号制御方法 |
JP5838827B2 (ja) * | 2012-01-23 | 2016-01-06 | 富士通株式会社 | 光伝送装置、及び光伝送方法 |
CN102571213B (zh) * | 2012-02-02 | 2017-02-08 | 中兴通讯股份有限公司 | 一种实现光放大器增益控制的装置和方法 |
EP2642676B1 (de) * | 2012-03-20 | 2017-03-15 | ADVA Optical Networking SE | Verfahren und Einrichtung zum Betrieb eines optischen Übertragungssystems |
US9667312B2 (en) * | 2015-01-13 | 2017-05-30 | Hughes Network Systems, Llc | Radio based automatic level control for linear radio calibration |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4616898A (en) * | 1980-03-31 | 1986-10-14 | Polaroid Corporation | Optical communication systems using raman repeaters and components therefor |
JPH0681119B2 (ja) * | 1986-04-17 | 1994-10-12 | 日本電気株式会社 | 波長多重光伝送方式 |
JP2787820B2 (ja) * | 1990-07-20 | 1998-08-20 | キヤノン株式会社 | 波長多重光通信システム及びそこで用いられる光増幅装置 |
US5035481A (en) * | 1990-08-23 | 1991-07-30 | At&T Bell Laboratories | Long distance soliton lightwave communication system |
JP3110805B2 (ja) * | 1991-07-01 | 2000-11-20 | 富士通株式会社 | 光中継システム |
US5225922A (en) * | 1991-11-21 | 1993-07-06 | At&T Bell Laboratories | Optical transmission system equalizer |
US5276543A (en) * | 1991-11-22 | 1994-01-04 | Gte Laboratories Incorporated | Optical signal equalizer for wavelength division multiplexed optical fiber systems |
JPH05191380A (ja) * | 1992-01-13 | 1993-07-30 | Fujitsu Ltd | 波長多重伝送方式 |
US5280383A (en) * | 1992-12-02 | 1994-01-18 | At&T Bell Laboratories | Dual-stage low power optical amplifier |
-
1993
- 1993-07-31 GB GB9315912A patent/GB2280561B/en not_active Expired - Fee Related
-
1994
- 1994-07-28 EP EP94305617A patent/EP0637148B1/de not_active Expired - Lifetime
- 1994-07-28 DE DE69423152T patent/DE69423152T2/de not_active Expired - Fee Related
- 1994-07-29 US US08/283,263 patent/US5463487A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0637148B1 (de) | 2000-03-01 |
EP0637148A1 (de) | 1995-02-01 |
US5463487A (en) | 1995-10-31 |
GB2280561B (en) | 1997-03-26 |
DE69423152T2 (de) | 2000-07-06 |
GB2280561A (en) | 1995-02-01 |
GB9315912D0 (en) | 1993-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: NORTEL NETWORKS LTD., ST.LAURENT, QUEBEC, CA |
|
8339 | Ceased/non-payment of the annual fee |