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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- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
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- 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
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- 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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- 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
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- 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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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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- 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
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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
- G02B6/02295—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
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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
- G02B6/02—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
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- 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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- H01S2301/00—Functional characteristics
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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
- H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
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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
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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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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- 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
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
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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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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 |
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 |
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 |
JP2009549198A Active JP5276021B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの誘電破壊の防止 |
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 |
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 |
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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 |
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 |
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JP2009549198A Active JP5276021B2 (ja) | 2007-02-05 | 2008-02-05 | 光ファイバの誘電破壊の防止 |
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 |
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 |
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US (6) | US8103142B2 (ja) |
EP (6) | EP2109790B1 (ja) |
JP (6) | JP5250565B2 (ja) |
CN (6) | CN101688950B (ja) |
AU (6) | AU2008213822B2 (ja) |
WO (6) | WO2008097977A2 (ja) |
Cited By (3)
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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 |
WO2020170560A1 (ja) * | 2019-02-21 | 2020-08-27 | 株式会社フジクラ | フィルタ装置、レーザ装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US9197030B2 (en) * | 2012-07-31 | 2015-11-24 | Corning Incorporated | Few mode rare earth doped optical fibers for optical amplifiers, and amplifiers using such fibers |
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JP6059560B2 (ja) * | 2013-03-04 | 2017-01-11 | 日本電信電話株式会社 | マルチモード伝送用光増幅器 |
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JP6323913B2 (ja) * | 2015-03-30 | 2018-05-16 | 日本電信電話株式会社 | 光増幅器及び伝送システム |
DE112016002585T5 (de) | 2015-06-10 | 2018-05-24 | Furukawa Electric Co., Ltd. | Pulslaservorrichtung |
US9871338B2 (en) * | 2015-12-31 | 2018-01-16 | Nlight, Inc. | Pump combiner for multi-clad fibers |
JP6654064B2 (ja) * | 2016-03-03 | 2020-02-26 | 日本電信電話株式会社 | モード変換器、光増幅器及び光伝送システム |
US10261246B2 (en) * | 2016-12-14 | 2019-04-16 | Ofs Fitel, Llc | Polarization-maintaining fiber device supporting propagation in large mode field diameters |
CN110892300B (zh) * | 2017-08-01 | 2021-10-01 | 日本电信电话株式会社 | 光纤和光传输*** |
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US20220069538A1 (en) * | 2018-12-28 | 2022-03-03 | Nlight, Inc. | Optical fiber devices and methods for suppressing stimulated raman scattering (srs) |
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CN110265858B (zh) * | 2019-06-19 | 2024-04-26 | 中国人民解放军国防科技大学 | 一种选择性激发高阶模的大功率拉曼光纤激光*** |
CN113189696A (zh) * | 2020-01-14 | 2021-07-30 | 华为技术有限公司 | 一种光纤滤波器以及光纤放大器 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09145941A (ja) * | 1995-10-04 | 1997-06-06 | At & T Corp | 長周期ファイバ・グレーティング装置 |
JPH11145539A (ja) * | 1997-11-07 | 1999-05-28 | Sumitomo Electric Ind Ltd | 光ファイバ増幅器 |
US6288835B1 (en) * | 1996-12-04 | 2001-09-11 | Lars Johan Albinsson Nilsson | Optical amplifiers and light source |
US20010043388A1 (en) * | 2000-02-29 | 2001-11-22 | Yochay Danziger | High order mode erbium-doped fiber amplifier |
JP2003090918A (ja) * | 2001-06-27 | 2003-03-28 | Fitel Usa Corp | 長周期格子を使用する光学帯域通過フィルタ |
JP2005017517A (ja) * | 2003-06-24 | 2005-01-20 | Fujikura Ltd | モード変換器 |
WO2005036223A1 (en) * | 2003-10-03 | 2005-04-21 | Draka Comteq Bv | Suppression of undesirable signal propagation mode(s) downstream of a mode converter |
US20060103919A1 (en) * | 2004-11-16 | 2006-05-18 | Digiovanni David J | Large mode area fibers using higher order modes |
JP2006516811A (ja) * | 2003-01-24 | 2006-07-06 | トルンプフ インコーポレイテッド | ファイバレーザ |
Family Cites Families (84)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3790902A (en) * | 1972-09-05 | 1974-02-05 | Bell Telephone Labor Inc | Fundamental transverse mode operation in solid state lasers |
US3875422A (en) * | 1974-07-24 | 1975-04-01 | Bell Telephone Labor Inc | Four photon parametric amplification in glassy optical waveguides |
US5363463A (en) * | 1982-08-06 | 1994-11-08 | Kleinerman Marcos Y | Remote sensing of physical variables with fiber optic systems |
US4741586A (en) * | 1987-02-20 | 1988-05-03 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic coupler using two-mode optical waveguides |
GB8724736D0 (en) * | 1987-10-22 | 1987-11-25 | British Telecomm | Optical fibre |
FR2638854B1 (fr) * | 1988-11-10 | 1992-09-04 | Comp Generale Electricite | Amplificateur laser a fibre optique dopee |
GB2239983A (en) * | 1989-12-22 | 1991-07-17 | Univ Southampton | Optical fibre laser |
US5185827A (en) * | 1991-09-26 | 1993-02-09 | At&T Bell Laboratories | Apparatus for compensating chromatic dispersion in optical fibers |
JP2713031B2 (ja) * | 1992-07-17 | 1998-02-16 | 日立電線株式会社 | 希土類元素添加マルチコアファイバ及びそれを用いた光増幅器 |
US6373868B1 (en) * | 1993-05-28 | 2002-04-16 | Tong Zhang | Single-mode operation and frequency conversions for diode-pumped solid-state lasers |
US5638388A (en) * | 1995-02-04 | 1997-06-10 | Spectra-Physics Lasers, Inc. | Diode pumped, multi axial mode intracavity doubled laser |
US6018533A (en) * | 1995-04-21 | 2000-01-25 | Ceramoptec Industries, Inc. | Optical fiber and integrated optic lasers with enhanced output power |
US5708669A (en) * | 1996-09-24 | 1998-01-13 | Lucent Technologies Inc. | Article comprising a cladding-pumped optical fiber laser |
US5877890A (en) * | 1996-10-30 | 1999-03-02 | Rutgers, The State University Of New Jersey | Optical-fiber amplifier having high-saturation output |
US5880877A (en) * | 1997-01-28 | 1999-03-09 | Imra America, Inc. | Apparatus and method for the generation of high-power femtosecond pulses from a fiber amplifier |
US5907647A (en) * | 1997-02-18 | 1999-05-25 | Lucent Technologies Inc. | Long-period grating switches and devices using them |
US5815518A (en) * | 1997-06-06 | 1998-09-29 | Lucent Technologies Inc. | Article comprising a cascaded raman fiber laser |
US5907652A (en) * | 1997-09-11 | 1999-05-25 | Lucent Technologies Inc. | Article comprising an air-clad optical fiber |
US6011886A (en) * | 1997-10-16 | 2000-01-04 | Lucent Technologies Inc. | Recoatable temperature-insensitive long-period gratings |
US5966481A (en) * | 1997-12-23 | 1999-10-12 | Northern Telecom Limited | Optically pumped optical waveguide amplifier |
US6404951B2 (en) * | 1998-03-26 | 2002-06-11 | Lasercomm Inc. | Transverse spatial mode transformer for optical communication |
US6084996A (en) * | 1998-04-01 | 2000-07-04 | Lucent Technologies, Inc. | Broadband long-period gratings |
EP1108235A4 (en) * | 1998-06-04 | 2005-11-09 | California Inst Of Techn | OPTICAL COMPONENTS BASED ON ENERGY TRANSFER BETWEEN VARIOUS MODES IN OPTICAL WAVEGUIDE |
KR20010071667A (ko) * | 1998-06-29 | 2001-07-31 | 알프레드 엘. 미첼슨 | 모놀리식 동축형 장치 |
US6163552A (en) * | 1998-08-14 | 2000-12-19 | Lucent Technologies Inc. | Article comprising an optical fiber cascaded Raman resonator |
FR2784197B1 (fr) * | 1998-10-05 | 2000-12-15 | Cit Alcatel | Fibre optique monomode a dispersion decalee a grande aire effective |
US6275512B1 (en) * | 1998-11-25 | 2001-08-14 | Imra America, Inc. | Mode-locked multimode fiber laser pulse source |
US6360045B1 (en) * | 1999-02-23 | 2002-03-19 | Lasercomm Inc. | High order spatial mode transmission system |
US6327403B1 (en) * | 1999-06-10 | 2001-12-04 | Lasercomm Inc. | Reducing mode interference in transmission of LP02 Mode in optical fibers |
CN1190677C (zh) * | 1999-09-02 | 2005-02-23 | 国际商业机器公司 | 加宽阵列波导光栅通带响应的方法和设备 |
US20020164140A1 (en) * | 2000-01-12 | 2002-11-07 | Michael Lysiansky | Few-mode fiber profile |
US6453102B1 (en) * | 2000-02-07 | 2002-09-17 | Corning Incorporated | Dispersion compensating module and mode converter, coupler and dispersion compensating optical waveguide therein |
JP2001267665A (ja) * | 2000-03-16 | 2001-09-28 | Sumitomo Electric Ind Ltd | 光増幅用光ファイバ、光ファイバ増幅器および光ファイバレーザ発振器 |
US6483974B1 (en) * | 2000-10-24 | 2002-11-19 | Jds Uniphase Corporation | Optical fiber with improved cross-sectional profile and optical gain media using same |
AUPR196400A0 (en) * | 2000-12-07 | 2001-01-04 | Defence Science And Technology Organisation | Rare-earth-doped waveguide |
US6724964B2 (en) * | 2001-01-30 | 2004-04-20 | Lasercomm Inc. | Optical waveguide exhibiting strongly positive dispersion, and system utilizing same |
US6807338B2 (en) * | 2001-03-12 | 2004-10-19 | Fitel Usa Corp. | Multiwavelength cascaded raman resonator |
FR2822243B1 (fr) * | 2001-03-16 | 2003-06-20 | Cit Alcatel | Fibre optique photonique a double gaine |
JP2004533390A (ja) * | 2001-04-12 | 2004-11-04 | オムニガイド コミュニケーションズ インコーポレイテッド | 高屈折率コントラストの光導波路および用途 |
US6483975B1 (en) * | 2001-04-27 | 2002-11-19 | Fitel Usa Corp. | Positive dispersion optical fiber having large effective area |
ATE284545T1 (de) * | 2001-06-11 | 2004-12-15 | Avanex Corp | Ein optischer wellenleiter und herstellungsverfahren für eine asymmetrische optische filtervorrichtung |
US6845194B2 (en) * | 2001-06-27 | 2005-01-18 | Furukawa Electric North America Inc. | Optical bandpass filter using long period gratings |
DE60222440T2 (de) * | 2001-07-12 | 2008-06-19 | Ocg Technology Licensing, Llc | Optische faser |
ATE251352T1 (de) * | 2001-07-23 | 2003-10-15 | Cit Alcatel | Optischer faserverstärker und kommunikationssystem unter verwendung desselben |
JP2003114350A (ja) * | 2001-07-31 | 2003-04-18 | Furukawa Electric Co Ltd:The | 光ファイバ、光ファイバ部品および光伝送方法 |
US6480659B1 (en) * | 2001-11-14 | 2002-11-12 | Rayteq Photonic Solutions Ltd. | Optic fiber structure for efficient use of optical pump energy in three-level rare-earth doped fiber laser |
JP2003158324A (ja) * | 2001-11-26 | 2003-05-30 | Nikon Corp | 光源装置及び光照射装置 |
EP1318579A1 (en) * | 2001-12-10 | 2003-06-11 | Corning Incorporated | Multi-wavelength raman laser |
JP4007812B2 (ja) * | 2002-01-18 | 2007-11-14 | 富士通株式会社 | ラマン増幅器および波長多重光通信システム、並びに、ラマン増幅の制御方法 |
FR2838261B1 (fr) * | 2002-04-05 | 2004-07-09 | Cit Alcatel | Fibre de compensation de dispersion utilisant un mode d'ordre superieur |
WO2003098295A1 (en) * | 2002-05-17 | 2003-11-27 | The Board Of Trustees Of The Leland Stanford Junior University | Double-clad fiber lasers and amplifiers having long-period fiber gratings |
US7321705B2 (en) * | 2002-05-28 | 2008-01-22 | Optun (Bvi) Ltd. | Method and device for optical switching and variable optical attenuation |
US6937788B2 (en) * | 2002-09-04 | 2005-08-30 | Furukawa Electric North America | Adjustable dispersion compensator with few mode fibers and switchable mode converters |
US6768835B2 (en) * | 2002-09-04 | 2004-07-27 | Fitel Usa Corp | Tunable mode-converters using few mode fibers |
AU2003302230A1 (en) * | 2002-10-16 | 2004-06-18 | Lake Shore Cryotronics, Inc. | Method of manufacturing a spectral filter for green and longer wavelengths |
JP4009969B2 (ja) * | 2002-12-10 | 2007-11-21 | 株式会社ニコン | 紫外光源、光治療装置、露光装置および被検物検査装置 |
FR2854249B1 (fr) * | 2003-04-25 | 2005-07-08 | Cit Alcatel | Dispositif et procede de transformation de mode de propagation de signaux, par interferences |
FR2855619B1 (fr) * | 2003-05-27 | 2005-07-22 | Cit Alcatel | Fibre optique pour amplification ou pour emission laser |
JP4047232B2 (ja) * | 2003-06-18 | 2008-02-13 | 株式会社フジクラ | 高次モードファイバ用モード変換器 |
US7120340B2 (en) * | 2003-06-19 | 2006-10-10 | Corning Incorporated | Single polarization optical fiber laser and amplifier |
JP2005084386A (ja) | 2003-09-09 | 2005-03-31 | Mitsubishi Cable Ind Ltd | ダブルクラッドファイバ及びそれを備えた光学装置、並びに、光増幅器 |
JP2005129863A (ja) * | 2003-10-27 | 2005-05-19 | Mitsubishi Cable Ind Ltd | ダブルクラッドファイバへの励起光入射方法 |
US20050123241A1 (en) * | 2003-12-03 | 2005-06-09 | Moti Margalit | Polarization independent frequency selective optical coupler |
US7343098B2 (en) * | 2003-12-17 | 2008-03-11 | The Boeing Company | Fiber optic phased array and associated method for accommodating atmospheric perturbations with phase and amplitude control |
FR2864254B1 (fr) * | 2003-12-23 | 2006-03-03 | Cit Alcatel | Fibre optique multimode hom a gestion de dispersion |
US7724422B2 (en) * | 2004-01-30 | 2010-05-25 | Nufern | Method and apparatus for providing light having a selected polarization with an optical fiber |
US7742512B2 (en) * | 2004-02-02 | 2010-06-22 | Raytheon Company | Scalable laser with robust phase locking |
FR2867865B1 (fr) * | 2004-03-16 | 2008-05-30 | Cit Alcatel | Fibre optique a compensation de dispersion chromatique en bande utilisant un mode d'ordre superieur |
US7082243B2 (en) * | 2004-04-05 | 2006-07-25 | Corning Incorporated | Large effective area high SBS threshold optical fiber |
US6950578B1 (en) * | 2004-05-28 | 2005-09-27 | Fitel Usa Corp. | Highly index-sensitive optical devices including long period fiber gratings |
US7424193B2 (en) * | 2004-07-14 | 2008-09-09 | The Regents Of The University Of Michigan | Composite waveguide |
WO2006010798A1 (en) * | 2004-07-26 | 2006-02-02 | Photonium Oy | Multimode optical fiber with low differential mode delay |
US7177510B2 (en) * | 2004-08-09 | 2007-02-13 | Fitel Usa Corp. | Polarization insensitive microbend fiber gratings and devices using the same |
FR2875016B1 (fr) * | 2004-09-08 | 2006-11-24 | Cit Alcatel | Convertisseur de mode |
JP4561314B2 (ja) * | 2004-10-28 | 2010-10-13 | 日立電線株式会社 | ファイバレーザ用光ファイバ、ファイバレーザ及びレーザ発振方法 |
GB0500277D0 (en) * | 2005-01-07 | 2005-02-16 | Southampton Photonics Ltd | Apparatus for propagating optical radiation |
US20060233554A1 (en) * | 2005-04-14 | 2006-10-19 | Siddharth Ramachandran | Optical fiber systems for delivering short high power pulses |
US7200308B2 (en) * | 2005-06-28 | 2007-04-03 | California Institute Of Technology | Frequency conversion with nonlinear optical polymers and high index contrast waveguides |
US7228029B1 (en) * | 2005-09-20 | 2007-06-05 | Furukawa Electric North America Inc. | Short pulse lasers using large mode area fibers and higher order modes |
FR2893149B1 (fr) * | 2005-11-10 | 2008-01-11 | Draka Comteq France | Fibre optique monomode. |
US20070206910A1 (en) * | 2006-03-04 | 2007-09-06 | Siddharth Ramachandran | Optical fibers and optical fiber devices with total dispersion greater than material dispersion |
US7257293B1 (en) * | 2006-07-14 | 2007-08-14 | Furukawa Electric North America, Inc. | Fiber structure with improved bend resistance |
US7356232B1 (en) * | 2006-08-01 | 2008-04-08 | Furukawa Electric North America | Optical fibers for high power applications |
CN101688950B (zh) * | 2007-02-05 | 2012-06-06 | Ofs菲特尔有限责任公司 | 顺序增加高阶模(hom)信号传播中的有效面积 |
-
2008
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Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09145941A (ja) * | 1995-10-04 | 1997-06-06 | At & T Corp | 長周期ファイバ・グレーティング装置 |
US6288835B1 (en) * | 1996-12-04 | 2001-09-11 | Lars Johan Albinsson Nilsson | Optical amplifiers and light source |
JPH11145539A (ja) * | 1997-11-07 | 1999-05-28 | Sumitomo Electric Ind Ltd | 光ファイバ増幅器 |
US20010043388A1 (en) * | 2000-02-29 | 2001-11-22 | Yochay Danziger | High order mode erbium-doped fiber amplifier |
JP2003090918A (ja) * | 2001-06-27 | 2003-03-28 | Fitel Usa Corp | 長周期格子を使用する光学帯域通過フィルタ |
JP2006516811A (ja) * | 2003-01-24 | 2006-07-06 | トルンプフ インコーポレイテッド | ファイバレーザ |
JP2005017517A (ja) * | 2003-06-24 | 2005-01-20 | Fujikura Ltd | モード変換器 |
WO2005036223A1 (en) * | 2003-10-03 | 2005-04-21 | Draka Comteq Bv | Suppression of undesirable signal propagation mode(s) downstream of a mode converter |
US20060103919A1 (en) * | 2004-11-16 | 2006-05-18 | Digiovanni David J | Large mode area fibers using higher order modes |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO2020170560A1 (ja) * | 2019-02-21 | 2020-08-27 | 株式会社フジクラ | フィルタ装置、レーザ装置 |
JP2020134758A (ja) * | 2019-02-21 | 2020-08-31 | 株式会社フジクラ | フィルタ装置、レーザ装置 |
US11835776B2 (en) | 2019-02-21 | 2023-12-05 | Fujikura Ltd. | Filter device and laser apparatus |
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