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1. WO2013001734 - ファイバレーザ

公開番号 WO/2013/001734
公開日 03.01.2013
国際出願番号 PCT/JP2012/003875
国際出願日 14.06.2012
IPC
H01S 3/067 2006.01
H電気
01基本的電気素子
S光を増幅または生成するために,放射の誘導放出による光増幅を用いた装置;光領域以外の電磁放射の誘導放出を用いた装置
3レーザ,すなわち赤外線,可視光または紫外線領域での電磁放射の誘導放出を用いた装置
05光学的な共振器の構造または形状;活性媒質の調整;活性媒質の形状
06活性媒質の構造または形状
063導波路型レーザ,例.レーザ増幅器
067ファイバ型レーザ
CPC
G02B 6/02104
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02057comprising gratings
02076Refractive index modulation gratings, e.g. Bragg gratings
0208characterised by their structure, wavelength response
021characterised by the core or cladding or coating, e.g. materials, radial refractive index profiles, cladding shape
02104characterised by the coating external to the cladding, e.g. coating influences grating properties
H01S 3/0401
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
02Constructional details
04Cooling arrangements
0401of optical elements being part of laser resonator, e.g. windows, mirrors, lenses
H01S 3/067
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
H01S 3/06704
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
06704Housings; Packages
H01S 3/06708
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
H01S 3/06716
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
06716Fibre compositions
出願人
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 西村 仁志 NISHIMURA, Hitoshi (UsOnly)
  • 伊藤 秀明 ITOH, Hideaki (UsOnly)
発明者
  • 西村 仁志 NISHIMURA, Hitoshi
  • 伊藤 秀明 ITOH, Hideaki
代理人
  • 内藤 浩樹 NAITO, Hiroki
優先権情報
2011-14402329.06.2011JP
公開言語 (言語コード) 日本語 (JA)
出願言語 (言語コード) 日本語 (JA)
指定国 (国コード)
発明の名称
(EN) FIBER LASER
(FR) LASER À FIBRE
(JA) ファイバレーザ
要約
(EN)
This optical fiber is provided with an input-side double-clad fiber that includes a high-reflection FBG, a double-clad fiber for oscillation, and an output-side double-clad fiber that includes a low-reflection FBG. The output-side double-clad fiber comprises a core, a first clad, and a second clad. A high-refractive-index-resin-coated section, which is recoated with a high-refractive-index resin having a refractive index equivalent to or higher than the refractive index of the second clad, is provided in a section between the low-reflection FBG and the emitting end of the output-side double-clad fiber where a portion of the second clad is removed. The refractive index of the high-refractive-index-resin-coated section gradually increases along the propagation direction of light propagating through the first clad.
(FR)
La présente invention concerne une fibre optique comportant une fibre à double gaine côté entrée comprenant un réseau de Bragg sur fibre (FBG) à haut pouvoir réflecteur, une fibre à double gaine d'oscillation et une fibre à double gaine côté sortie comprenant un FBG à faible pouvoir réflecteur. La fibre à double gaine côté sortie comporte un cœur, une première gaine et une deuxième gaine. Une section revêtue de résine à haut indice de réfraction, qui est à nouveau revêtue d'une résine à haut indice de réfraction présentant un indice de réfraction équivalent ou supérieur à l'indice de réfraction de la deuxième gaine, est placée dans une section située entre le FBG à faible pouvoir réflecteur et l'extrémité d'émission de la fibre à double gaine côté sortie où une partie de la deuxième gaine est supprimée. L'indice de réfraction de la section revêtue de résine à haut indice de réfraction augmente progressivement dans la direction de propagation de la lumière se propageant à travers la première gaine.
(JA)
本発明の光ファイバは、高反射FBGを含む入力側ダブルクラッドファイバと、発振用ダブルクラッドファイバと、低反射FBGを含む出力側ダブルクラッドファイバと、を備える。出力側ダブルクラッドファイバは、コアと、第一クラッドと、第二クラッドと、からなり、出力側ダブルクラッドファイバの低反射FBGと出射端との間の第二クラッドの一部を除去した部分に第二クラッドの屈折率と同等以上の屈折率をもつ高屈折率樹脂で再被覆した高屈折率樹脂被覆部を配置する。この高屈折率樹脂被覆部の屈折率が、第一クラッドを伝搬する光の伝搬方向に沿って徐々に高くなっている。
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