JPWO2017085822A1 - 光増幅装置 - Google Patents
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- 230000003321 amplification Effects 0.000 claims description 31
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 31
- 230000005284 excitation Effects 0.000 claims description 29
- 238000005086 pumping Methods 0.000 claims description 17
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- 238000010586 diagram Methods 0.000 description 21
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- 229910052691 Erbium Inorganic materials 0.000 description 2
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- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 2
- 102100027004 Inhibin beta A chain Human genes 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 230000001678 irradiating effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
Description
図1は、実施の形態1に係る光増幅装置100の構成を示す構成図である。図1において、光増幅装置100は、入力された信号光を増幅する光増幅部を有する信号光伝搬路10と、光源素子と受光素子からなる複数の光学素子部品と、光増幅装置100の構成部品を制御する制御部とから構成されている。
動作利得(dB)=10Log(Po/Pi)・・・(式1)
図5は、実施の形態2に係る光増幅装置200の構成を示す構成図である。実施の形態2に係る光増幅装置200では、実施の形態1にEDF3aとVTEQ11との間にシェイプ等化器(SEQ:Shape EQualizer)12が新たに設けられている。なお、実施の形態1と同一もしくは対応する構成については、同一符号を付し、その説明を省略する。
図10は、実施の形態3に係る光増幅装置300の構成を示す構成図である。実施の形態1に係る光増幅装置100では、波長選択性光合波器5a及びLD7aがEDF3aの前段側に設けられているのに対して、実施の形態3に係る光増幅装置300では、第2の光合波部としての波長選択性光合波器5b及びLD7bがEDF3aの後段に設けられている点が異なる。ここで、LD7bは、EDF3aの後段においてEDF3aを励起している。なお、実施の形態2と同様に、波長選択性光合波器5bとVTEQ11との間にSEQ12を設けてもよいことは言うまでもない。
図11は、実施の形態4に係る光増幅装置400の構成を示す構成図である。実施の形態1に係る光増幅装置100の構成に加えて、EDF3aの後段に設けられる励起光源としてのLD7b及び波長選択性光合波器5bをさらに備える構成である。EDF3aは、前段側と後段側の両方から励起される。そのため、EDF3a全長に亘って均一な励起が可能となる。なお、実施の形態2と同様に、波長選択性光合波器5bとVTEQ11との間にSEQ12を設けてもよいことは言うまでもない。また、図中、図1と同一もしくは対応する構成については、同一符号を付し、その説明を省略する。
図12は、実施の形態5に係る光増幅装置500の構成を示す構成図である。実施の形態5に係る光増幅装置500は、実施の形態4に係る光増幅装置400と比較して、第2の光増幅部としてのEDF3bがVTEQ11の前段にさらに設けられていると共に、波長選択性光合波器5bの代わりに、第3の光合波部としての波長選択性光合波器5cがEDF3a,3bの間に設けられている点が異なる。ここでは、LD7bは、波長選択性光合波器5cを介してEDF3bを前方励起している。なお、実施の形態2と同様に、波長選択性光合波器5cとVTEQ11との間にSEQ12を設けてもよいことは言うまでもない。また、図中、図11と同一もしくは対応する構成については、同一符号を付し、その説明を省略する。
2 光出力部
3a,3b EDF(エルビウム添加ファイバ)
5a,5b,5c 波長選択性光合波器
6a,6b PD(フォトダイオード)
7a,7b LD(レーザダイオード)
10 信号光伝搬路
11 VTEQ(可変チルト等化器)
12 SEQ(シェイプ等化器)
21 励起光制御部
22 チルト制御部
Claims (10)
- 互いに異なる波長を有する複数の信号光が多重化された入力信号光が入力される光入力部と、前記入力信号光を増幅し増幅信号光として出力する第1の光増幅部と、前記増幅信号光が出力される光出力部と、を有する信号光伝搬路を備え、
前記信号光伝搬路は、前記第1の光増幅部と前記光出力部との間に設けられ、前記増幅信号光に対して直線的な損失傾斜による損失を与え、前記損失傾斜の傾きである損失傾斜値を変更可能である可変チルト等化器を有する光増幅装置であって、
前記光入力部における入力信号光パワーを検出する第1の光検出器と、
前記第1の光増幅部を励起する励起光源と、
前記光出力部における出力信号光パワーを検出する第2の光検出器と、
前記励起光源を制御する第1の制御部と、
前記可変チルト等化器の前記損失傾斜値を制御する第2の制御部と
を備える光増幅装置。 - 前記第1の制御部は、
前記入力信号光パワー及び前記出力信号光パワーに基づいて動作利得を求め、前記動作利得が予め設定された目標利得に近付くように前記励起光源を制御する
ことを特徴とする請求項1に記載の光増幅装置。 - 前記第2の制御部は、
前記第1の光増幅部の利得の波長依存性である利得傾斜特性及び前記目標利得に基づき利得傾斜の傾きである利得傾斜値を算出し、前記利得傾斜値を前記損失傾斜値として前記可変チルト等化器を制御する
ことを特徴とする請求項2に記載の光増幅装置。 - 前記第2の制御部は、
前記第1の光増幅部の利得の波長依存性である利得傾斜特性及び前記動作利得に基づき利得傾斜の傾きである利得傾斜値を算出し、前記利得傾斜値を前記損失傾斜値として前記可変チルト等化器を制御する
ことを特徴とする請求項2に記載の光増幅装置。 - 前記信号光伝搬路は、
前記第1の光増幅部と前記可変チルト等化器との間に設けられ、前記利得傾斜を直線的な特性に補償する損失特性を有するシェイプ等化器を有する
ことを特徴とする請求項3または請求項4に記載の光増幅装置。 - 前記信号光伝搬路は、
前記光入力部と前記第1の光増幅部との間に設けられた第1の光合波部を有し、
前記励起光源は、
前記第1の光合波部を介して前記第1の光増幅部を励起する
ことを特徴とする請求項1から請求項5のいずれか1項に記載の光増幅装置。 - 前記信号光伝搬路は、
前記第1の光増幅部と前記可変チルト等化器との間に第2の光合波部を有し、
前記励起光源は、
前記第2の光合波部を介して前記第1の光増幅部を励起する
ことを特徴とする請求項1から請求項5のいずれか1項に記載の光増幅装置。 - 前記信号光伝搬路は、
前記光入力部と前記第1の光増幅部との間に設けられた第1の光合波部と、
前記第1の光増幅部と前記可変チルト等化器との間に設けられた第2の光合波部と
を有し、
前記励起光源は、
前記第1の光合波部及び前記第2の光合波部を介して前記第1の光増幅部を励起する
ことを特徴とする請求項1から請求項5のいずれか1項に記載の光増幅装置。 - 前記信号光伝搬路は、
前記光入力部と前記第1の光増幅部との間に設けられた第1の光合波部と、
前記第1の光増幅部と前記可変チルト等化器との間に設けられた第3の光合波部と、
前記第3の光合波部と前記可変チルト等化器との間に設けられた第2の光増幅部と
を有し、
前記励起光源は、
前記第1の光合波部を介して前記第1の光増幅部を励起すると共に、前記第3の光合波部を介して前記第2の光増幅部を励起する
ことを特徴とする請求項1から請求項5のいずれか1項に記載の光増幅装置。 - 前記第1の制御部の制御周期は、前記第2の制御部の周期より短い
ことを特徴とする請求項1から請求項9のいずれか1項に記載の光増幅装置。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000252923A (ja) * | 1999-03-02 | 2000-09-14 | Fujitsu Ltd | 波長多重用光増幅器及び光通信システム |
JP2006108499A (ja) * | 2004-10-07 | 2006-04-20 | Furukawa Electric Co Ltd:The | 光信号増幅装置及びロススペクトルの決定方法。 |
JP2006286918A (ja) * | 2005-03-31 | 2006-10-19 | Furukawa Electric Co Ltd:The | 光増幅装置 |
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---|---|---|---|---|
JP3306700B2 (ja) | 1996-05-02 | 2002-07-24 | 富士通株式会社 | 光増幅装置及び波長多重光伝送システム |
US6456428B1 (en) * | 1999-09-02 | 2002-09-24 | Sumitomo Electric Industries, Ltd. | Optical amplifier |
US6535329B1 (en) * | 1999-12-20 | 2003-03-18 | Jds Uniphase Inc. | Temperature tuning an optical amplifier |
EP1130819A1 (en) | 2000-03-03 | 2001-09-05 | Telefonaktiebolaget Lm Ericsson | Method and device for determining gain tilt in optical amplifiers with measurement of the total gain |
US6731424B1 (en) * | 2001-03-15 | 2004-05-04 | Onetta, Inc. | Dynamic gain flattening in an optical communication system |
US6611371B2 (en) | 2001-03-16 | 2003-08-26 | Corning Incorporated | Single parameter gain slope adjuster for an optical system |
US6535330B1 (en) * | 2001-03-31 | 2003-03-18 | Corning Incorporated | Dynamic controller for a multi-channel optical amplifier |
US6483631B1 (en) * | 2001-06-05 | 2002-11-19 | Onetta, Inc. | Optical amplifier spectral tilt controllers |
GB0124258D0 (en) | 2001-10-09 | 2001-11-28 | Marconi Comm Ltd | Optical amplifier control in WDM communications systems |
JP3903830B2 (ja) * | 2002-04-05 | 2007-04-11 | 株式会社日立製作所 | 利得補償装置及びそれを用いた伝送システム |
JP3551418B2 (ja) | 2003-05-27 | 2004-08-04 | 富士通株式会社 | 光伝送装置及び波長多重光通信システム |
JP4298570B2 (ja) * | 2004-04-13 | 2009-07-22 | 富士通株式会社 | 光ファイバ増幅器の制御方法および光伝送システム |
US8233214B2 (en) * | 2008-02-13 | 2012-07-31 | Maxim Bolshtyansky | Optical fiber amplifier and a control method therefor |
JP2012156285A (ja) * | 2011-01-26 | 2012-08-16 | Fujitsu Ltd | 光増幅装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2000252923A (ja) * | 1999-03-02 | 2000-09-14 | Fujitsu Ltd | 波長多重用光増幅器及び光通信システム |
JP2006108499A (ja) * | 2004-10-07 | 2006-04-20 | Furukawa Electric Co Ltd:The | 光信号増幅装置及びロススペクトルの決定方法。 |
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US10971888B2 (en) | 2021-04-06 |
WO2017085822A1 (ja) | 2017-05-26 |
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