DE60042517D1 - Verfahren zum Ausgleichen der Leistung in einem optischen WDM Signal - Google Patents
Verfahren zum Ausgleichen der Leistung in einem optischen WDM SignalInfo
- Publication number
- DE60042517D1 DE60042517D1 DE60042517T DE60042517T DE60042517D1 DE 60042517 D1 DE60042517 D1 DE 60042517D1 DE 60042517 T DE60042517 T DE 60042517T DE 60042517 T DE60042517 T DE 60042517T DE 60042517 D1 DE60042517 D1 DE 60042517D1
- Authority
- DE
- Germany
- Prior art keywords
- balancing
- power
- wdm signal
- optical wdm
- 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
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
- H04B10/2941—Signal power control in a multiwavelength system, e.g. gain equalisation using an equalising unit, e.g. a filter
-
- 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
- H04B10/297—Bidirectional amplification
- H04B10/2972—Each direction being amplified separately
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/467,776 US6292290B1 (en) | 1999-12-20 | 1999-12-20 | Methods and apparatus for adjusting power in an optical signal, for providing a seamless optical ring and for providing a bidirectional equalized amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
DE60042517D1 true DE60042517D1 (de) | 2009-08-20 |
Family
ID=23857133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60042517T Expired - Lifetime DE60042517D1 (de) | 1999-12-20 | 2000-04-28 | Verfahren zum Ausgleichen der Leistung in einem optischen WDM Signal |
Country Status (4)
Country | Link |
---|---|
US (1) | US6292290B1 (de) |
EP (1) | EP1111818B1 (de) |
CA (1) | CA2301344C (de) |
DE (1) | DE60042517D1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6532322B1 (en) * | 1997-06-06 | 2003-03-11 | Novera Optics, Inc. | Channel equalizer with acousto-optic variable attenuators |
US6801686B2 (en) * | 1997-06-06 | 2004-10-05 | Novera Optics, Inc. | Methods and apparatus for measuring the power spectrum of optical signals |
US6510261B2 (en) | 1997-06-06 | 2003-01-21 | Novera Optics, Inc. | Acousto-optic variable attenuator with active cancellation of back reflections |
US6539148B1 (en) * | 1997-06-06 | 2003-03-25 | Novera Optics, Inc. | Channel equalizer with acousto-optic variable attenuators |
US6640027B2 (en) | 1997-06-06 | 2003-10-28 | Novera Optics, Inc. | Gain flattening tunable filter |
US6847742B2 (en) * | 1997-06-16 | 2005-01-25 | Novera Optics, Inc. | Tunable dynamic gain flattening filter using polarization delays |
US6850655B2 (en) | 1997-06-16 | 2005-02-01 | Novera Optics, Inc. | Optical apparatus with faraday rotator, static gain flattening filter and variable optical attenuator |
GB2347809B (en) * | 1999-03-12 | 2001-06-20 | Marconi Comm Ltd | Signal transmission system |
US7170673B2 (en) * | 1999-07-30 | 2007-01-30 | Mitsubishi Denki Kabushiki Kaisha | Optical amplifying repeater apparatus and optical amplifying/repeating transmission system |
US6657778B1 (en) * | 1999-07-30 | 2003-12-02 | Mitsubishi Denkikabushiki Kaisha | Optical amplification repeater and optical amplification repeating and transmitting system |
DE60138935D1 (de) * | 2000-02-23 | 2009-07-23 | Fujitsu Ltd | Optischer Verstärker |
US7209655B2 (en) * | 2002-04-12 | 2007-04-24 | Fujitsu Limited | Sharing of power level information to support optical communications |
US7209656B2 (en) * | 2002-04-12 | 2007-04-24 | Fujitsu Limited | Management of optical links using power level information |
US7212742B2 (en) * | 2002-04-12 | 2007-05-01 | Fujitsu Limited | Power level management in optical networks |
US7081987B2 (en) * | 2002-05-29 | 2006-07-25 | Pts Corporation | Coordinated control of dynamic gain equalization in a wavelength division multiplexed optical system |
US7289734B2 (en) * | 2002-12-24 | 2007-10-30 | Tropic Networks Inc. | Method and system for multi-level power management in an optical network |
US20200195349A1 (en) * | 2017-02-22 | 2020-06-18 | Nec Corporation | Optical relay system |
CN109039589A (zh) * | 2017-06-09 | 2018-12-18 | 广东国盾量子科技有限公司 | 一种量子信号与经典信号复用光纤传输的装置和方法 |
CN110311877B (zh) * | 2019-07-05 | 2022-03-01 | 北京神经元网络技术有限公司 | 多子频带信号传输方法、装置、设备及介质 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4900119A (en) | 1988-04-01 | 1990-02-13 | Canadian Patents & Development Ltd. | Wavelength selective optical devices using optical directional coupler |
GB9305977D0 (en) * | 1993-03-23 | 1993-05-12 | Northern Telecom Ltd | Transmission system incorporating optical amplifiers |
US5513029A (en) | 1994-06-16 | 1996-04-30 | Northern Telecom Limited | Method and apparatus for monitoring performance of optical transmission systems |
JPH08264871A (ja) * | 1995-03-20 | 1996-10-11 | Fujitsu Ltd | 多波長一括光増幅装置 |
JPH08278523A (ja) * | 1995-04-05 | 1996-10-22 | Hitachi Ltd | 光増幅装置 |
IT1283372B1 (it) * | 1996-07-31 | 1998-04-17 | Pirelli Cavi S P A Ora Pirelli | Dispositivo per l'inserimento e l'estrazione di segnali ottici |
JPH10173597A (ja) * | 1996-12-06 | 1998-06-26 | Nec Corp | 光イコライザ |
GB2327546A (en) * | 1997-07-18 | 1999-01-27 | Northern Telecom Ltd | Optical frequency channel assignment plan and filtering technique to support it |
US5978114A (en) | 1997-08-29 | 1999-11-02 | Amphenol Corporation | Modular cascaded Mach-Zehnder DWDM components |
GB9724822D0 (en) * | 1997-11-24 | 1998-01-21 | Alsthom Cge Alcatel | Channel control in a wavelength division multiplexed communications network |
EP1635486A1 (de) * | 1998-05-19 | 2006-03-15 | NEC Corporation | Vorrichtung zur Verstärkerung und Zwischenverstärkung von optischen Signalen und Vorrichtung zur Pegeleinstellung von optischen Signalen |
US5959749A (en) | 1998-05-20 | 1999-09-28 | Nortel Networks Corporation | Optical add/drop multiplexer/demultiplexer |
EP0964275A1 (de) * | 1998-06-09 | 1999-12-15 | PIRELLI CAVI E SISTEMI S.p.A. | Verfahren und Vorrichtung zum Entnehmen von optische Kanälen in einem optischen Übertragungssystem |
-
1999
- 1999-12-20 US US09/467,776 patent/US6292290B1/en not_active Expired - Lifetime
-
2000
- 2000-03-20 CA CA2301344A patent/CA2301344C/en not_active Expired - Lifetime
- 2000-04-28 EP EP00303596A patent/EP1111818B1/de not_active Expired - Lifetime
- 2000-04-28 DE DE60042517T patent/DE60042517D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2301344A1 (en) | 2001-06-20 |
EP1111818A2 (de) | 2001-06-27 |
US6292290B1 (en) | 2001-09-18 |
EP1111818B1 (de) | 2009-07-08 |
CA2301344C (en) | 2011-08-09 |
EP1111818A3 (de) | 2004-02-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Ref document number: 1111818 Country of ref document: EP Representative=s name: PATENTANWAELTE WALLACH, KOCH & PARTNER, 80339 MUEN |