JP2006317948A - 増幅された自然放射光の抑制用光ファイバフィルタ - Google Patents
増幅された自然放射光の抑制用光ファイバフィルタ Download PDFInfo
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- JP2006317948A JP2006317948A JP2006132062A JP2006132062A JP2006317948A JP 2006317948 A JP2006317948 A JP 2006317948A JP 2006132062 A JP2006132062 A JP 2006132062A JP 2006132062 A JP2006132062 A JP 2006132062A JP 2006317948 A JP2006317948 A JP 2006317948A
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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
- G02B6/0238—Longitudinal structures having higher refractive index than background material, e.g. high index solid rods
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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
- G02B6/03605—Highest refractive index not on central axis
- G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
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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
- G02B6/03638—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 3 layers only
- G02B6/03644—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 3 layers only arranged - + -
-
- 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
- G02B6/03688—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 5 or more layers
-
- 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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29331—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by evanescent wave coupling
- G02B6/29332—Wavelength selective couplers, i.e. based on evanescent coupling between light guides, e.g. fused fibre couplers with transverse coupling between fibres having different propagation constant wavelength dependency
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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
- G02B6/02042—Multicore optical fibres
-
- 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
- G02B6/02347—Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding
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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"
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/105—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Lasers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
【解決手段】インライン分布型光ファイバフィルタが所望の伝送波長の全内部反射(TIR)を可能にするよう(周囲を取り囲むクラッド材に対して)高い屈折率をもつコア領域から成る。1つ以上の高い屈折率の特徴部がクラッド領域の中に形成され、フィルタによって除去されるべき所定の波長においてクラッドモードとコアモードとの間でモード混合をもたらすように構成される。適切なコア規格、およびクラッド規格を決定するためのパラメータは不要な信号のフィルタリング、および所望の通信信号の伝播の観点からよりいっそうの性能をもたらすためにそれぞれ個別に決定できる。
【選択図】図1
Description
12、26、34、42 コア
14 内側のクラッド領域
16 リング
18 外側のクラッド領域
20、28、36、56 クラッドの特徴部
22、30、38 クラッド領域
50 全ファイバ型光フィルタ
52 高い屈折率のコア領域
54 低い屈折率のクラッド領域
I、II 高損失の波長の点
X、Y、Z 低損失の波長の点
Claims (10)
- ファイバコアから少なくとも1つのあらかじめ定められたノイズ波長の光を除去するための光ファイバフィルタであって、前記ファイバフィルタが:
ncoreで表される第1の屈折率の値を有するコア領域から成る1本の光ファイバと;
前記コア領域を取り囲み、nclad<ncoreであるncladで表される第2の屈折率の値を有するクラッド領域と;
nhi>ncladであるnhiで表される第3の屈折率の値を有するクラッド領域内に配される少なくとも1つの高い屈折率を有するクラッド特徴部、およびコアモードの実効屈折率がクラッドモードの実効屈折率と実質的に適合するときにコアモードとクラッドモードのモード混合が生じるファイバコアからろ過(フィルタ)されるべき少なくとも1つのあらかじめ定められたノイズ波長を決定する種々の屈折率の値、サイズ、および位置とを含むことを特徴とする光ファイバフィルタ。 - 前記少なくとも1つの高い屈折率を有するクラッド特徴部が前記コア領域を取り囲むように配された少なくとも1つの高い屈折率のリングから成ることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記少なくとも1つの高い屈折率を有するリングが前記コア領域を取り囲むように配された複数の同心のリングから成ることを特徴とする請求項2に記載の光ファイバフィルタ。
- 前記少なくとも1つの高い屈折率を有する特徴部が前記コア領域に対してあらかじめ定められた位置に配された複数の高い屈折率の特徴部から成ることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記コア領域と最も近くにある前記高い屈折率のクラッドの特徴部との間の結合長と、最も近くにある前記高い屈折率のクラッドの特徴部の間の結合長が基本的に同じであることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記少なくとも1つの高い屈折率のクラッドの特徴部が複屈折を生成し、伝播する光信号の偏光制御をもたらすように形成され、前記コア領域に対して配されることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記1本の光ファイバが前記クラッド領域に沿って配された複数の円筒状の開口を含む微細構造のファイバから成ることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記フィルタの特性が前記ファイバに機械的な変形を含むことによって修正されることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記フィルタがさらにフィルタ特性を修正するために前記クラッド領域が吸収/散乱性の材料から成ることを特徴とする請求項1に記載の光ファイバフィルタ。
- 前記フィルタ特性があらかじめ定められたノイズ波長を除去し、前記ノイズ波長よりも短い、および長い所望の信号波長を残すように決定されることを特徴とする請求項1に記載の光ファイバフィルタ。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/126,712 US7272287B2 (en) | 2005-05-11 | 2005-05-11 | Optical fiber filter for suppression of amplified spontaneous emission |
Publications (2)
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JP2006317948A true JP2006317948A (ja) | 2006-11-24 |
JP4612583B2 JP4612583B2 (ja) | 2011-01-12 |
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JP2006132062A Expired - Fee Related JP4612583B2 (ja) | 2005-05-11 | 2006-05-11 | 増幅された自然放射光の抑制用光ファイバフィルタ |
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US (1) | US7272287B2 (ja) |
EP (3) | EP2312347A1 (ja) |
JP (1) | JP4612583B2 (ja) |
CN (1) | CN1880985B (ja) |
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- 2006-05-09 EP EP10177970A patent/EP2264494A3/en not_active Ceased
- 2006-05-09 EP EP06009572.6A patent/EP1722256B1/en not_active Expired - Fee Related
- 2006-05-11 JP JP2006132062A patent/JP4612583B2/ja not_active Expired - Fee Related
- 2006-05-11 CN CN2006100802008A patent/CN1880985B/zh not_active Expired - Fee Related
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Cited By (9)
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JP2019504506A (ja) * | 2016-02-04 | 2019-02-14 | ローレンス・リバモア・ナショナル・セキュリティ・エルエルシーLawrence Livermore National Security, LLC | ファイバレーザおよび増幅器におけるライン選択のための導波路設計 |
KR102658642B1 (ko) * | 2016-02-04 | 2024-04-19 | 로렌스 리버모어 내쇼날 시큐리티, 엘엘시 | 광섬유 레이저 및 증폭기의 회선 선택을 위한 도파관 구조 |
JP2017156449A (ja) * | 2016-02-29 | 2017-09-07 | 株式会社フジクラ | マルチコアファイバ |
US10094972B2 (en) | 2016-02-29 | 2018-10-09 | Fujikura Ltd. | Multicore fiber |
JP2019535118A (ja) * | 2016-10-07 | 2019-12-05 | ローレンス リバーモアー ナショナル セキュリティー, エルエルシー | Nd3+ファイバレーザおよびアンプ |
JP7340334B2 (ja) | 2016-10-07 | 2023-09-07 | ローレンス リバーモアー ナショナル セキュリティー, エルエルシー | Nd3+ファイバレーザおよびアンプ |
KR20210028865A (ko) * | 2019-09-05 | 2021-03-15 | 한국광기술원 | 클래딩 모드를 제거하는 광섬유 및 이의 제조방법 |
KR102375092B1 (ko) * | 2019-09-05 | 2022-03-16 | 한국광기술원 | 클래딩 모드를 제거하는 광섬유 및 이의 제조방법 |
WO2022103003A1 (ko) * | 2020-11-10 | 2022-05-19 | 엘에스전선 주식회사 | 해킹 방지용 광섬유, 광케이블 및 광 패치코드 |
Also Published As
Publication number | Publication date |
---|---|
EP1722256A3 (en) | 2006-12-13 |
EP2264494A3 (en) | 2011-03-23 |
EP1722256B1 (en) | 2018-08-15 |
EP2312347A1 (en) | 2011-04-20 |
EP1722256A2 (en) | 2006-11-15 |
US7272287B2 (en) | 2007-09-18 |
CN1880985B (zh) | 2010-11-24 |
CN1880985A (zh) | 2006-12-20 |
EP2264494A2 (en) | 2010-12-22 |
JP4612583B2 (ja) | 2011-01-12 |
US20060257071A1 (en) | 2006-11-16 |
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