JP4718769B2 - ラマン増幅中継器 - Google Patents
ラマン増幅中継器 Download PDFInfo
- Publication number
- JP4718769B2 JP4718769B2 JP2003330574A JP2003330574A JP4718769B2 JP 4718769 B2 JP4718769 B2 JP 4718769B2 JP 2003330574 A JP2003330574 A JP 2003330574A JP 2003330574 A JP2003330574 A JP 2003330574A JP 4718769 B2 JP4718769 B2 JP 4718769B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- spectrum
- raman amplification
- light
- signal light
- 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
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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
- H04B10/2912—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
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- 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
-
- 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
- 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
- H01S3/09—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
- H01S3/09415—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-pumping
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
Description
2a、2b:WDMカプラ
3a、3b、3c:励起LD
4:分岐カプラ
5a、5b、5c、5d:光サーキュレータ
6a、6b、6c、6d:FBG
7a、7b、7c、7d:PD
8:無反射終端
10:制御部
30a、30b、30c:LD駆動回路
70a、70b、70c、70d:I/V変換器
Claims (5)
- 複数の波長の異なる励起光を伝送路ファイバに入力した場合のラマン散乱による信号光の増幅作用を用いたラマン増幅中継器において、
前記信号光の信号帯域内における監視用波長であって、前記励起光の波長の数より多く、且つ、前記信号光の数と同数以下の前記監視用波長の信号光によって信号光パワーを監視することにより、前記励起光を出射する励起LDの出力パワーを制御するラマン増幅中継器であって、
前記監視用波長は、ラマン増幅後の信号光のスペクトラムのボトム値及びトップ値に設定されていることを特徴とするラマン増幅中継器。 - 信号光のスペクトラムのボトム値に設定された前記監視波長におけるスペクトラムのパワーが、予め設定した目標値となるように、前記励起LDの出力パワーを制御することを特徴とする請求項1に記載のラマン増幅中継器。
- 信号光のスペクトラムのトップ値に設定された複数の前記監視波長におけるスペクトラムのパワーが、同じ値となるように、前記励起LDの出力パワーを制御することを特徴とする請求項1又は請求項2に記載のラマン増幅中継器。
- 信号光スペクトラムのトップ値に設定された複数の前記監視波長におけるスペクトラムのパワーの差がなくなるように、前記監視波長の前記信号光を増幅する励起光を出射する前記励起LDの出力パワーを制御することを特徴とする請求項3に記載のラマン増幅中継器。
- 前記目標値が、前記信号帯域内における最小利得値に基づいて設定されることを特徴とする請求項2に記載のラマン増幅中継器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003330574A JP4718769B2 (ja) | 2003-09-22 | 2003-09-22 | ラマン増幅中継器 |
CNB200410076839XA CN100435498C (zh) | 2003-09-22 | 2004-09-08 | 拉曼放大中继器 |
US10/936,186 US7239441B2 (en) | 2003-09-22 | 2004-09-08 | Raman amplification repeater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003330574A JP4718769B2 (ja) | 2003-09-22 | 2003-09-22 | ラマン増幅中継器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005099198A JP2005099198A (ja) | 2005-04-14 |
JP4718769B2 true JP4718769B2 (ja) | 2011-07-06 |
Family
ID=34419002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003330574A Expired - Fee Related JP4718769B2 (ja) | 2003-09-22 | 2003-09-22 | ラマン増幅中継器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7239441B2 (ja) |
JP (1) | JP4718769B2 (ja) |
CN (1) | CN100435498C (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4184046B2 (ja) * | 2002-11-18 | 2008-11-19 | 富士通株式会社 | ラマン増幅器 |
JP2005141099A (ja) * | 2003-11-07 | 2005-06-02 | Nec Corp | ラマン増幅中継器及びこれを用いた光伝送システム |
JP2006287649A (ja) * | 2005-03-31 | 2006-10-19 | Nec Corp | 光伝送システムにおける光信号送出パワー調整装置及び光信号の送出パワー調整方法 |
JP2008153558A (ja) * | 2006-12-20 | 2008-07-03 | Nec Corp | 光伝送システム及びその信号スペクトラム補正方法 |
CN108781126B (zh) * | 2016-03-10 | 2020-09-04 | 日本电气株式会社 | 光学传输系统、波长选择开关的控制装置、和插入损耗校正方法 |
CN111736265B (zh) * | 2020-05-22 | 2021-11-19 | 浙江大学 | 一种光栅型偏振不敏感的多通道波分复用接收器 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2306604B1 (en) * | 1998-07-23 | 2012-09-05 | The Furukawa Electric Co., Ltd. | Optical repeater comprising a Raman amplifier |
JP3527671B2 (ja) * | 1999-04-23 | 2004-05-17 | 富士通株式会社 | ラマン増幅による光伝送パワーの波長特性制御方法、並びに、それを用いた波長多重光通信システムおよび光増幅器 |
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 |
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 |
US6542287B1 (en) * | 2000-12-12 | 2003-04-01 | Onetta, Inc. | Optical amplifier systems with transient control |
JP4626918B2 (ja) * | 2001-03-02 | 2011-02-09 | 富士通株式会社 | ラマン光増幅中継器 |
US6879434B2 (en) * | 2002-07-11 | 2005-04-12 | Fujitsu Network Communications, Inc. | Distributed raman amplifier for optical network and method |
JP2005141099A (ja) * | 2003-11-07 | 2005-06-02 | Nec Corp | ラマン増幅中継器及びこれを用いた光伝送システム |
-
2003
- 2003-09-22 JP JP2003330574A patent/JP4718769B2/ja not_active Expired - Fee Related
-
2004
- 2004-09-08 CN CNB200410076839XA patent/CN100435498C/zh not_active Expired - Fee Related
- 2004-09-08 US US10/936,186 patent/US7239441B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2005099198A (ja) | 2005-04-14 |
US7239441B2 (en) | 2007-07-03 |
US20050078355A1 (en) | 2005-04-14 |
CN1601933A (zh) | 2005-03-30 |
CN100435498C (zh) | 2008-11-19 |
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