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1. WO2011007684 - PHOTONIC CRYSTAL FIBER

Publication Number WO/2011/007684
Publication Date 20.01.2011
International Application No. PCT/JP2010/061307
International Filing Date 02.07.2010
IPC
G02B 6/00 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
H01S 3/06 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION 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
CPC
G02B 6/02333
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02295Microstructured optical fibre
02314Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
02319characterised by core or core-cladding interface features
02333Core having higher refractive index than cladding, e.g. solid core, effective index guiding
G02B 6/02347
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02295Microstructured optical fibre
02314Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
02342characterised by cladding features, i.e. light confining region
02347Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding
G02B 6/0238
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02295Microstructured optical fibre
02314Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
02342characterised by cladding features, i.e. light confining region
0238Longitudinal structures having higher refractive index than background material, e.g. high index solid rods
H01S 3/06729
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
06729Peculiar transverse fibre profile
H01S 3/06741
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
06729Peculiar transverse fibre profile
06741Photonic crystal fibre, i.e. the fibre having a photonic bandgap
Applicants
  • 住友電気工業株式会社 SUMITOMO ELECTRIC INDUSTRIES,LTD. [JP]/[JP] (AllExceptUS)
  • 永島 拓志 NAGASHIMA, Takuji [JP]/[JP] (UsOnly)
  • 樽 稔樹 TARU, Toshiki [JP]/[JP] (UsOnly)
Inventors
  • 永島 拓志 NAGASHIMA, Takuji
  • 樽 稔樹 TARU, Toshiki
Agents
  • 中田 元己 NAKATA, Motomi
Priority Data
2009-16893917.07.2009JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PHOTONIC CRYSTAL FIBER
(FR) FIBRE CRISTALLINE PHOTONIQUE
(JA) フォトニック結晶ファイバ
Abstract
(EN)
Provided is a photonic crystal fiber which can be fusion spliced to a normal optical fiber with low loss, the photonic crystal fiber being provided with a core region and a clad region that surrounds the core region, wherein the clad region has a two-dimensional periodic structure in which high-refractive index regions are periodically arranged in a low-refractive index background region in a cross-section perpendicular to the fiber axis, the refractive index of the core region is higher than the refractive index of the low-refractive index background region. In the photonic crystal fiber, the refractive-index distribution along the fiber axis is uniform. The effective refractive index of a core guided mode may be higher than the refractive index of the low-refractive index background region.
(FR)
L'invention porte sur une fibre cristalline photonique qui peut être épissurée par fusion en une fibre optique normale avec une perte faible, la fibre cristalline photonique comportant une région d'âme et une région de gaine qui entoure la région d'âme, la région de gaine ayant une structure périodique en deux dimensions dans laquelle des régions d'indice de réfraction élevé sont agencées périodiquement dans une région de fond à indice de réfraction faible dans une section transversale perpendiculaire à l'axe de la fibre, l'indice de réfraction de la région d'âme étant supérieur à l'indice de réfraction de la région de fond à indice de réfraction faible. Dans la fibre cristalline photonique, la distribution d'indice de réfraction le long de l'axe de fibre est uniforme. L'indice de réfraction efficace d'un mode guidé d'âme peut être supérieur à l'indice de réfraction de la région de fond à indice de réfraction faible.
(JA)
 通常の光ファイバとより低損失で融着接続可能なフォトニック結晶ファイバは、コア領域とコア領域を取り囲むクラッド領域とを備え、クラッド領域は、ファイバ軸に垂直な断面において低屈折率背景領域に高屈折率領域が周期的に配列された二次元周期構造を有し、コア領域の屈折率は低屈折率背景領域の屈折率より高いフォトニック結晶ファイバが提供される。このフォトニック結晶ファイバにおいて、ファイバ軸に沿う屈折率分布は一様である。コア導波モードの実効屈折率が低屈折率背景領域の屈折率より高くてもよい。
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