JP2010518632A - 信号のモードとは異なる高次モードにおける励起 - Google Patents
信号のモードとは異なる高次モードにおける励起 Download PDFInfo
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
- G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
- G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 nm
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- 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
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06733—Fibre having more than one cladding
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- G—PHYSICS
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
- G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
- G02B6/02023—Based on higher order modes, i.e. propagating modes other than the LP01 or HE11 fundamental mode
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/14—Mode converters
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- 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
- H01S3/0672—Non-uniform radial doping
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- 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
- H01S3/094038—End pumping
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/0208—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
- G02B6/02085—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the grating profile, e.g. chirped, apodised, tilted, helical
- G02B6/02095—Long period gratings, i.e. transmission gratings coupling light between core and cladding modes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02366—Single ring of structures, e.g. "air clad"
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
- G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
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- H01S2301/00—Functional characteristics
- H01S2301/03—Suppression of nonlinear conversion, e.g. specific design to suppress for example stimulated brillouin scattering [SBS], mainly in optical fibres in combination with multimode pumping
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- H—ELECTRICITY
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- 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
- H01S2301/20—Lasers with a special output beam profile or cross-section, e.g. non-Gaussian
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- H—ELECTRICITY
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- 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
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
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- H—ELECTRICITY
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- 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
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- 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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/0804—Transverse or lateral modes
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- 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
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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
- H01S3/09—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
Abstract
Description
この出願は「高次モード増幅器」と題する2007年2月5日に出願された仮出願特許No.60/888,114に対して優先権の利益を主張し、参照のためそのすべてがここに引用される。
115、215 カスケード式ラマン共振器(CRR)
120、220 入力ファイバと利得ドープファイバの接合部
125 信号の基底LP01モード
130 モード除去器
135 モード変換器
145 伝播光
155、250 利得ドープファイバ
160、255 入力ファイバ
205 信号源
210、610 信号光
230 信号モード変換器
235 信号のLP0mモード
240 励起光モード変換器
255 多重化されたLP01モード光
410 ファイバの断面像
420 HOMの近視野像
430 内側のクラッド
440 空気孔
450 シリカの輪
500 屈折率のチャート
510 屈折率プロファイル
520 HOM信号
560 HOM信号、および利得ドープファイバプロファイル
620、720 励起光
Claims (15)
- 信号源と、
高次モード(HOM)信号を伝播する、前記信号源に光学的に結合された利得ドープされた光ファイバと、
前記利得ドープされた光ファイバに光学的に結合された励起光源と、
前記利得ドープされた光ファイバに刻まれた長周期グレーティング(LPG)の第一のセットとを含み、前記LPGの第一のセットが前記信号を前記第一のHOMに変換するように構成されており、さらに、
前記利得ドープされた光ファイバに刻まれた長周期グレーティング(LPG)の第二のセットを含み、前記LPGの第二のセットが前記励起光を第二のHOMに変換するように構成されており、そして、前記第二のHOMが前記第一のHOMとは異なることを特徴とする装置。 - 前記LPGの第一のセットと前記LPGの第二のセットとが、前記利得ドープされた光ファイバの実質的に同じ位置に刻まれていることを特徴とする請求項1に記載の装置。
- 前記LPGの第一のセットと前記LPGの第二のセットとが、前記利得ドープされた光ファイバの実質的に異なる位置に刻まれていることを特徴とする請求項1に記載の装置。
- 利得ドープされた領域を有する光ファイバを含み、前記光ファイバが高次モード(HOM)信号を伝播する前記利得ドープされた領域の半径方向外側に位置する外側クラッドをさらに有しており、さらに、
信号を第一の高次(HOM)モードに変換する、前記光ファイバに光学的に結合された信号モード変換器と、
励起光を第二のHOMに変換する、前記光ファイバに光学的に結合された励起モード変換器とを含むことを特徴とする装置。 - さらに、前記高次モードを除去する方法からなることを特徴とする請求項4に記載の装置。
- さらに、前記光ファイバに光学的に結合されたモード除去器からなることを特徴とする請求項4に記載の装置。
- 前記第二のHOMが前記第一のHOMと実質的に同一であることを特徴とする請求項4に記載の装置。
- 前記第二のHOMが前記第一のHOMと実質的に異なることを特徴とする請求項4に記載の装置。
- 前記信号モード変換器と前記励起モード変換器とが前記光ファイバに直列に配されていることを特徴とする請求項4に記載の装置。
- 前記信号モード変換器と前記励起モード変換器とが前記光ファイバのおおよそ同じ位置に配されていることを特徴とする請求項4に記載の装置。
- 前記信号モード変換器は、前記信号を前記第一のHOMに変換するように適合された長周期グレーティング(LPG)であることを特徴とする請求項4に記載の装置。
- 前記励起モード変換器は、前記励起光を前記第二のHOMに変換するように適合された長周期グレーティング(LPG)であることを特徴とする請求項4に記載の装置。
- 利得ドープされたファイバにおいて、信号を第一の高次モード(HOM)に変換し、そして、励起光を第二のHOMに変換する方法。
- 前記第二のHOMが前記第一のHOMと実質的に同一であることを特徴とする請求項13に記載の方法。
- 前記第二のHOMが前記第一のHOMと実質的に異なることを特徴とする請求項13に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88811407P | 2007-02-05 | 2007-02-05 | |
PCT/US2008/053048 WO2008097968A2 (en) | 2007-02-05 | 2008-02-05 | Pumping in a higher-order mode that is different from a signal mode |
Publications (1)
Publication Number | Publication Date |
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JP2010518632A true JP2010518632A (ja) | 2010-05-27 |
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Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
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JP2009549201A Pending JP2010518632A (ja) | 2007-02-05 | 2008-02-05 | 信号のモードとは異なる高次モードにおける励起 |
JP2009549199A Active JP5250564B2 (ja) | 2007-02-05 | 2008-02-05 | 高次モード(hom)信号の伝播における有効断面積の連続的な増加 |
JP2009549206A Active JP5484073B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの利得ドープ領域の選択的励起 |
JP2009549204A Active JP5250565B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの分割された利得ドーピング |
JP2009549207A Pending JP2010518634A (ja) | 2007-02-05 | 2008-02-05 | 信号のモードと本質的に同一である高次モードにおける励起 |
JP2009549198A Active JP5276021B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの誘電破壊の防止 |
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Application Number | Title | Priority Date | Filing Date |
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JP2009549199A Active JP5250564B2 (ja) | 2007-02-05 | 2008-02-05 | 高次モード(hom)信号の伝播における有効断面積の連続的な増加 |
JP2009549206A Active JP5484073B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの利得ドープ領域の選択的励起 |
JP2009549204A Active JP5250565B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの分割された利得ドーピング |
JP2009549207A Pending JP2010518634A (ja) | 2007-02-05 | 2008-02-05 | 信号のモードと本質的に同一である高次モードにおける励起 |
JP2009549198A Active JP5276021B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの誘電破壊の防止 |
Country Status (6)
Country | Link |
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US (6) | US7925128B2 (ja) |
EP (6) | EP2109787A4 (ja) |
JP (6) | JP2010518632A (ja) |
CN (6) | CN101688944B (ja) |
AU (6) | AU2008213939B2 (ja) |
WO (6) | WO2008097977A2 (ja) |
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JP2013004590A (ja) * | 2011-06-13 | 2013-01-07 | Nippon Telegr & Teleph Corp <Ntt> | 光ファイバ増幅器 |
JP2014183318A (ja) * | 2013-03-15 | 2014-09-29 | Ofs Fitel Llc | 高次モード光ファイバ増幅器における誘導ブリユアン散乱の抑制 |
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