JP4612583B2 - 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
- Publication number
- JP4612583B2 JP4612583B2 JP2006132062A JP2006132062A JP4612583B2 JP 4612583 B2 JP4612583 B2 JP 4612583B2 JP 2006132062 A JP2006132062 A JP 2006132062A JP 2006132062 A JP2006132062 A JP 2006132062A JP 4612583 B2 JP4612583 B2 JP 4612583B2
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- Prior art keywords
- cladding
- refractive index
- core
- optical fiber
- region
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Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- 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)
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 (7)
- ファイバコアから少なくとも1つの予め定められたノイズ波長の光を除去する光ファイバフィルタであって、前記ファイバフィルタは、
ncoreで表される第1の屈折率値を有するコア領域を含む、ある長さの光ファイバと、
nclad<ncoreであるncladで表される第2の屈折率値を有する、前記コア領域を取り囲むクラッド領域と、
nhi>ncladであるnhiで表される第3の屈折率値を有する、クラッド領域内に配された複数の高屈折率クラッド特徴部とを含み、前記コア領域に沿って伝搬する少なくとも1つの信号を維持しながら、少なくとも1つの予め定められたノイズ波長が前記ファイバコア領域から前記クラッド領域へ結合するように、前記nhiの値と、特徴部の直径とサイズと前記複数の高屈折率クラッド特徴部を形成する特徴部の総数とを含む物理的特性とが選択され、そして、前記複数の高屈折率クラッド特徴部のコア領域と最も近くにある高屈折率クラッド特徴部との間の結合長と、隣接する高屈折率クラッド特徴部間の結合長とが実質的に等しい、ことを特徴とする光ファイバフィルタ。 - 前記複数の高屈折率クラッド特徴部は、前記コア領域を取り囲むように配された少なくとも1つの高屈折率リングを含む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つの高屈折率リングは、前記コア領域を取り囲むように配された複数の同心リングを含む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。
- 前記ある長さ光ファイバは、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ファイバを含む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導入する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。
- 前記フィルタはさらに、フィルタ特性を修正するために前記クラッド領域に吸収/散乱性の材料を含む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。
- 前記ノイズ波長よりも短い少なくとも1つの光信号波長と前記ノイズ波長よりも長い少なくとも1つの光信号波長とが前記コア領域に沿って伝搬し続けるとともに、予め定められたノイズ波長を除去するように、前記フィルタ特性が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 |
---|---|---|---|
US11/126,712 US7272287B2 (en) | 2005-05-11 | 2005-05-11 | Optical fiber filter for suppression of amplified spontaneous emission |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006317948A JP2006317948A (ja) | 2006-11-24 |
JP4612583B2 true JP4612583B2 (ja) | 2011-01-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7272287B2 (ja) |
EP (3) | EP2264494A3 (ja) |
JP (1) | JP4612583B2 (ja) |
CN (1) | CN1880985B (ja) |
Families Citing this family (52)
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JP4243327B2 (ja) * | 2007-04-06 | 2009-03-25 | 株式会社フジクラ | フォトニックバンドギャップファイバ及びファイバ増幅器 |
US8107784B2 (en) | 2007-06-15 | 2012-01-31 | Ofs Fitel, Llc | Reduced bend sensitivity and catastrophic bend loss in single mode optical fibers and method of making same |
US8374472B2 (en) | 2007-06-15 | 2013-02-12 | Ofs Fitel, Llc | Bend insensitivity in single mode optical fibers |
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2005
- 2005-05-11 US US11/126,712 patent/US7272287B2/en active Active
-
2006
- 2006-05-09 EP EP10177970A patent/EP2264494A3/en not_active Ceased
- 2006-05-09 EP EP10177964A patent/EP2312347A1/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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JPH0580230A (ja) * | 1991-02-14 | 1993-04-02 | Corning Inc | フアイバオプテイツク・フイルタ構造 |
JP2002535715A (ja) * | 1999-01-25 | 2002-10-22 | コーニング・インコーポレーテッド | 分布型共鳴リングファイバフィルタ |
JP2001201649A (ja) * | 2000-01-17 | 2001-07-27 | Communications Research Laboratory Mphpt | 同軸周期構造光導波路およびそれを用いた光フィルタ |
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EP2312347A1 (en) | 2011-04-20 |
EP1722256B1 (en) | 2018-08-15 |
JP2006317948A (ja) | 2006-11-24 |
EP1722256A3 (en) | 2006-12-13 |
US20060257071A1 (en) | 2006-11-16 |
CN1880985B (zh) | 2010-11-24 |
EP1722256A2 (en) | 2006-11-15 |
US7272287B2 (en) | 2007-09-18 |
CN1880985A (zh) | 2006-12-20 |
EP2264494A2 (en) | 2010-12-22 |
EP2264494A3 (en) | 2011-03-23 |
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