JP5103908B2 - 光学モジュール - Google Patents
光学モジュール Download PDFInfo
- Publication number
- JP5103908B2 JP5103908B2 JP2007000181A JP2007000181A JP5103908B2 JP 5103908 B2 JP5103908 B2 JP 5103908B2 JP 2007000181 A JP2007000181 A JP 2007000181A JP 2007000181 A JP2007000181 A JP 2007000181A JP 5103908 B2 JP5103908 B2 JP 5103908B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical
- amplified
- light source
- optical fiber
- 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.)
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Classifications
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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
- H01S3/05—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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- 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
- H01S3/0014—Monitoring arrangements not otherwise provided for
-
- 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
- H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Description
Claims (7)
- 励起光が供給され被増幅光を光増幅し得る増幅用光ファイバと、
この増幅用光ファイバに供給すべき励起光を出力する励起光源と、
第1ポート、第2ポート及び前記被増幅光を入力する被増幅光入力ポートを含む複数のポートそれぞれに入力した光を合波して共通ポートから出力することが可能であり、逆に前記共通ポートから入力した光を前記複数のポートに出力することが可能であり、前記第1ポートに入力された励起光を前記共通ポートから前記増幅用光ファイバへ出力する光結合器と、
前記励起光源から出力された励起光に遅延時間を与えて前記第1ポートへ出力する遅延用光ファイバと、
前記第2ポートから出力された光を検知する光検知器と、
前記光検知器による検知結果に基づいて、前記光検知器により検知された光のパワーが所定値より大きいときに、前記被増幅光入力ポートへ入力される前記被増幅光または前記遅延用光ファイバに入力される励起光を停止またはその強度を低減するように制御する制御部と
を備え、
前記遅延用光ファイバによる遅延時間は、前記光検知器の検知から前記被増幅光または前記励起光の出力変動までに要する時間より長いことを特徴とする光学モジュール。 - 前記制御部は、前記光検知器により検知された光のパワーが所定値より大きいときに、前記励起光源からの励起光の出力を停止または強度を低減させる
ことを特徴とする請求項1記載の光学モジュール。 - 前記励起光源と前記遅延用光ファイバとの間に設けられ光の伝搬をオンまたはオフする光学部品を備え、
前記制御部は、前記光検知器により検知された光のパワーが所定値より大きいときに、前記光学部品における光の伝搬をオフさせる
ことを特徴とする請求項1記載の光学モジュール。 - 前記被増幅光を出力する被増幅光源を備え、
前記制御部は、前記光検知器により検知された光のパワーが所定値より大きいときに、被増幅光源からの前記被増幅光の出力を停止または強度を低減させる
ことを特徴とする請求項1記載の光学モジュール。 - 前記被増幅光を出力する被増幅光源と、前記被増幅光源の被増幅光を直接変調または前記被増幅光原からの被増幅光を外部変調する変調器とを備え、
前記制御部は、前記光検知器により検知された光のパワーが所定値より大きいときに、前記変調器の変調をオフさせる
ことを特徴とする請求項1記載の光学モジュール。 - 前記遅延用光ファイバは、長さが1mを越えることを特徴とする請求項1記載の光学モジュール。
- 前記遅延用光ファイバによる遅延時間は、前記光検知器の検知から前記被増幅光または前記励起光の出力変動までに要する時間が0.1μs以上であることを特徴とする請求項1記載の光学モジュール。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007000181A JP5103908B2 (ja) | 2007-01-04 | 2007-01-04 | 光学モジュール |
US12/003,233 US7561325B2 (en) | 2007-01-04 | 2007-12-20 | Optical module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007000181A JP5103908B2 (ja) | 2007-01-04 | 2007-01-04 | 光学モジュール |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008166643A JP2008166643A (ja) | 2008-07-17 |
JP5103908B2 true JP5103908B2 (ja) | 2012-12-19 |
Family
ID=39594004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007000181A Expired - Fee Related JP5103908B2 (ja) | 2007-01-04 | 2007-01-04 | 光学モジュール |
Country Status (2)
Country | Link |
---|---|
US (1) | US7561325B2 (ja) |
JP (1) | JP5103908B2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201002740D0 (en) * | 2010-02-17 | 2010-04-07 | Spi Lasers Uk Ltd | Laser apparatus |
JP2013055283A (ja) * | 2011-09-06 | 2013-03-21 | Fujikura Ltd | 高パワーパルス光発生装置 |
JP2015149369A (ja) * | 2014-02-05 | 2015-08-20 | 株式会社フジクラ | ファイバレーザ装置 |
CN109149328B (zh) * | 2018-08-23 | 2020-12-25 | 中国科学院合肥物质科学研究院 | 一种环境稳定的低重复频率线性腔皮秒掺镱光纤激光器 |
CN111934194B (zh) * | 2020-07-01 | 2022-02-22 | 苏州创鑫激光科技有限公司 | 一种激光器 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2988114B2 (ja) * | 1992-04-15 | 1999-12-06 | 松下電器産業株式会社 | 光ファイバ増幅器 |
JPH0816761B2 (ja) * | 1993-04-13 | 1996-02-21 | 日本電気株式会社 | 光増幅器制御回路 |
JP3317834B2 (ja) * | 1996-01-18 | 2002-08-26 | 日本電気株式会社 | 光送信回路 |
US5867305A (en) * | 1996-01-19 | 1999-02-02 | Sdl, Inc. | Optical amplifier with high energy levels systems providing high peak powers |
JP3854673B2 (ja) * | 1996-11-25 | 2006-12-06 | 株式会社日立コミュニケーションテクノロジー | 光増幅媒体制御方法及び光増幅装置並びにそれを利用したシステム |
JP4063908B2 (ja) * | 1997-01-29 | 2008-03-19 | 富士通株式会社 | 光源装置、光増幅器及び光通信システム |
US6317255B1 (en) * | 1998-04-28 | 2001-11-13 | Lucent Technologies Inc. | Method and apparatus for controlling optical signal power in response to faults in an optical fiber path |
US6366393B1 (en) * | 1999-08-25 | 2002-04-02 | Lucent Technologies Inc. | Fast gain control for optical amplifiers |
JP2006032417A (ja) * | 2004-07-12 | 2006-02-02 | Nec Corp | 光増幅器並びにその増幅機能自動制御方法、制御装置及び光通信装置、光伝送システム |
JP2006222352A (ja) * | 2005-02-14 | 2006-08-24 | Fujikura Ltd | 光ファイバレーザ及び光ファイバ増幅器 |
JP2006319219A (ja) * | 2005-05-13 | 2006-11-24 | Fujikura Ltd | 多モード光ファイバ及びその利用 |
JP4699131B2 (ja) * | 2005-08-05 | 2011-06-08 | 株式会社フジクラ | 光ファイバレーザ、光ファイバ増幅器、mopa方式光ファイバレーザ |
JP4835305B2 (ja) * | 2006-07-27 | 2011-12-14 | 住友電気工業株式会社 | 光増幅器 |
-
2007
- 2007-01-04 JP JP2007000181A patent/JP5103908B2/ja not_active Expired - Fee Related
- 2007-12-20 US US12/003,233 patent/US7561325B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7561325B2 (en) | 2009-07-14 |
US20080165413A1 (en) | 2008-07-10 |
JP2008166643A (ja) | 2008-07-17 |
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