JP4848836B2 - 光活性デバイス - Google Patents
光活性デバイス Download PDFInfo
- Publication number
- JP4848836B2 JP4848836B2 JP2006136622A JP2006136622A JP4848836B2 JP 4848836 B2 JP4848836 B2 JP 4848836B2 JP 2006136622 A JP2006136622 A JP 2006136622A JP 2006136622 A JP2006136622 A JP 2006136622A JP 4848836 B2 JP4848836 B2 JP 4848836B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength
- optical fiber
- ase
- excitation 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
Links
- 230000005284 excitation Effects 0.000 claims description 90
- 230000003287 optical effect Effects 0.000 claims description 90
- 239000013307 optical fiber Substances 0.000 claims description 36
- 230000003321 amplification Effects 0.000 claims description 34
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 34
- 238000005086 pumping Methods 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- 238000005253 cladding Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 206010040925 Skin striae Diseases 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000146 host glass Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01S3/094003—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
- H01S2301/00—Functional characteristics
- H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction thereof
-
- 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
- H01S3/094061—Shared pump, i.e. pump light of a single pump source is used to pump plural gain media in parallel
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Description
Claims (7)
- 被増幅光をパルス発振する種光源と、
2段以上に縦続配置され、光活性物質が添加された増幅用光ファイバと、
前記増幅用光ファイバのうち前段の増幅用光ファイバに対し合波器を介し前記光活性物質を励起するための励起光を出力する励起光源と、
被増幅光の波長の戻り光を遮断し、前記増幅用光ファイバのうち後段の増幅用光ファイバからの逆方向ASE光を一部透過するアイソレータと
を有し、
前記増幅用光ファイバのうち後段の増幅用光ファイバからの逆方向ASE光の一部が、励起光波長(前記励起光源の励起光と同じ波長)の光を含み、前記前段の増幅用光ファイバへ向かって出射する光デバイスであって、
前記逆方向ASE光の一部が前記合波器を介して前記励起光源へ直接入射しない構成、または、前記励起光波長の前記逆方向ASE光の一部が前記合波器へ入射する前にそのパワーを問題ないレベルに減衰する前記アイソレータ以外の防止手段を有する
ことを特徴とする光活性デバイス。
- 前記光活性物質がイットリビウム(Yb)であり、
前記励起光の波長の少なくとも一部が0.98μm帯である
ことを特徴とする請求項1記載の光活性デバイス。 - 前記防止手段が、前記前段の増幅用光ファイバと前記後段の増幅用光ファイバとの間に設けられた波長分割型波長多重ファイバカプラであって、前記励起光波長のASE光をASE透過出力ポートへ出力し、前記励起光波長と異なる波長のASE光を前記前段の増幅器からの光が入力する入力ポートへ出力することを特徴とする請求項1記載の光活性デバイス。
- 前記波長多重ファイバカプラにおけるASE透過出力ポートが、放熱機構を有する無反射終端とされている
ことを特徴とする請求項3記載の光活性デバイス。 - 前記後段の増幅用光ファイバは、二重クラッド構造を具備し、クラッド励起され、
前記励起光源は単一横モードの励起光を出力する
ことを特徴とする請求項1記載の光活性デバイス。 - 前記防止手段が、前記励起光源から出力された励起光を前記増幅用光ファイバに結合する手段と比べて、前記逆方向ASE光は励起光波長よりも同等またはそれよりも低い透過ロスを有する、
ことを特徴とする請求項1記載の光活性デバイス。 - 前記合波器は波長多重ファイバカプラである
ことを特徴とする請求項1記載の光活性デバイス。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006136622A JP4848836B2 (ja) | 2006-05-16 | 2006-05-16 | 光活性デバイス |
US11/798,530 US7864410B2 (en) | 2006-05-16 | 2007-05-15 | Optical active device having optical amplifying sections cascaded on a path for propagating input light with a predetermined wavelength |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006136622A JP4848836B2 (ja) | 2006-05-16 | 2006-05-16 | 光活性デバイス |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007311412A JP2007311412A (ja) | 2007-11-29 |
JP4848836B2 true JP4848836B2 (ja) | 2011-12-28 |
Family
ID=38711713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006136622A Expired - Fee Related JP4848836B2 (ja) | 2006-05-16 | 2006-05-16 | 光活性デバイス |
Country Status (2)
Country | Link |
---|---|
US (1) | US7864410B2 (ja) |
JP (1) | JP4848836B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8098424B2 (en) * | 2006-03-31 | 2012-01-17 | Sumitomo Electric Industries, Ltd. | Optical fiber amplifying module |
US8290003B2 (en) | 2007-11-30 | 2012-10-16 | Sumitomo Electric Industries, Ltd. | Pulse light source |
US8233214B2 (en) * | 2008-02-13 | 2012-07-31 | Maxim Bolshtyansky | Optical fiber amplifier and a control method therefor |
JP2009290203A (ja) * | 2008-04-30 | 2009-12-10 | Sumitomo Electric Ind Ltd | 光増幅モジュールおよびレーザ光源装置 |
JP5623706B2 (ja) * | 2009-04-27 | 2014-11-12 | 株式会社メガオプト | レーザ光源 |
KR101093672B1 (ko) | 2009-12-29 | 2011-12-15 | 서울시립대학교 산학협력단 | 슈퍼컨티뉴엄 광원 |
JP5654673B2 (ja) | 2011-05-24 | 2015-01-14 | 株式会社メガオプト | 光源制御方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4938556A (en) * | 1983-11-25 | 1990-07-03 | The Board Of Trustees Of The Leland Stanford Junior University | Superfluorescent broadband fiber laser source |
US5280549A (en) * | 1993-02-05 | 1994-01-18 | National Research Council Of Canada | Frequency dependent optical isolator |
JPH095806A (ja) * | 1995-06-19 | 1997-01-10 | Hitachi Cable Ltd | 光増幅器 |
US5867305A (en) * | 1996-01-19 | 1999-02-02 | Sdl, Inc. | Optical amplifier with high energy levels systems providing high peak powers |
US6359728B1 (en) * | 1998-09-22 | 2002-03-19 | Pirelli Cavi E Sistemi S.P.A. | Pump device for pumping an active fiber of an optical amplifier and corresponding optical amplifier |
US6384948B1 (en) * | 1998-09-30 | 2002-05-07 | The United States Of America As Represented By The Secretary Of The Navy | High-sensitivity, high-speed digital optical photoreceiver |
GB2385460B (en) * | 2002-02-18 | 2004-04-14 | Univ Southampton | "Pulsed light sources" |
US7046432B2 (en) * | 2003-02-11 | 2006-05-16 | Coherent, Inc. | Optical fiber coupling arrangement |
US7391561B2 (en) * | 2005-07-29 | 2008-06-24 | Aculight Corporation | Fiber- or rod-based optical source featuring a large-core, rare-earth-doped photonic-crystal device for generation of high-power pulsed radiation and method |
-
2006
- 2006-05-16 JP JP2006136622A patent/JP4848836B2/ja not_active Expired - Fee Related
-
2007
- 2007-05-15 US US11/798,530 patent/US7864410B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7864410B2 (en) | 2011-01-04 |
US20070268570A1 (en) | 2007-11-22 |
JP2007311412A (ja) | 2007-11-29 |
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