JP2008516285A - 横断方向閉ループ共振器 - Google Patents
横断方向閉ループ共振器 Download PDFInfo
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- JP2008516285A JP2008516285A JP2007535739A JP2007535739A JP2008516285A JP 2008516285 A JP2008516285 A JP 2008516285A JP 2007535739 A JP2007535739 A JP 2007535739A JP 2007535739 A JP2007535739 A JP 2007535739A JP 2008516285 A JP2008516285 A JP 2008516285A
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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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
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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
- G02B6/24—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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12007—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
-
- 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
-
- 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
- G02B6/29304—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 diffraction, e.g. grating
- G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
- G02B6/29317—Light guides of the optical fibre type
- G02B6/29319—With a cascade of diffractive elements or of diffraction operations
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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
- G02B6/24—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
- G02B6/29335—Evanescent coupling to a resonator cavity, i.e. between a waveguide mode and a resonant mode of the cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- 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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- 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
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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
- G02B6/24—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
- G02B6/29334—Grating-assisted evanescent light guide couplers, i.e. comprising grating at or functionally associated with the coupling region between the light guides, e.g. with a grating positioned where light fields overlap in the coupler
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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
- G02B6/24—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
- G02B6/29335—Evanescent coupling to a resonator cavity, i.e. between a waveguide mode and a resonant mode of the cavity
- G02B6/29338—Loop resonators
- G02B6/29341—Loop resonators operating in a whispering gallery mode evanescently coupled to a light guide, e.g. sphere or disk or cylinder
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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
- G02B6/24—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
- G02B6/29346—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 wave or beam interference
- G02B6/29356—Interference cavity within a single light guide, e.g. between two fibre gratings
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- Optical Integrated Circuits (AREA)
- Lasers (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
誘電体層導波モードの有効屈折率
ガラス内側クラッドの屈折率
ウィスパリングギャラリーモードの有効屈折率
外側空気クラッドの屈折率
直径125μmのファイバでは、以下のような値になる。
誘電体層導波モードの有効屈折率 1.485
ガラス内側クラッドの屈折率 1.445
ウィスパリングギャラリーモードの有効屈折率 1.428
1.414
1.401
1.391
1.386
1.380
1.371
外側空気クラッドの屈折率 1.003
直径500μmのファイバでは、以下のような値になる。
誘電体層導波モードの有効屈折率 1.471
ガラス内側クラッドの屈折率 1.445
ウィスパリングギャラリーモードの有効屈折率 1.416
1.386
1.370
1.347
1.322
1.300
外側空気クラッドの屈折率 1.003
ウィスパリングギャラリーモードの有効屈折率は、誘電体層導波モードの有効屈折率と、最も低次のウィスパリングギャラリーモードの有効屈折率との差に比べて、それよりも近接した間隔である。このことは、誘電体層導波モードの有効屈折率「セットオフ」を有するか、または値が、組のウィスパリングギャラリーモードの有効屈折率とは区別されるという利点がある。外側モードと共振器モードとの間の結合は、内側モード伝搬定数と外側モード伝搬定数とがいかによく一致するかということに部分的に依存するので、有効屈折率の不一致が大きくなることは、ウィスパリングギャラリーモード(モードフィールド形状のような他のすべてのものが同一である)への結合が弱くなることを意味する。このことにより、ウィスパリングギャラリーモードに結合されるエネルギー量が最小限に抑えられるときに(内部インターフェースと外部インターフェースとの結合領域およびリングの周りの伝搬の両方において)、1つの単一の鋭い共振ピークが形成されることが望ましい。
Claims (10)
- 横断方向閉ループ導波路共振器であって、
光を表面に閉じ込めるための閉ループ形状を周縁に形成する前記表面を有する内側クラッドであって、前記横断方向閉ループ共振器の断面部において、第1の径厚さと第1の屈折率分布とを有する内側クラッドと、
前記内側クラッドの対応する表面に配置された前記閉ループ形状に対応するリングコアであって、前記横断方向閉ループ共振器の断面部において、前記第1の径厚さよりも薄い材料の第2の厚さと、前記リングコアが、前記閉ループ形状の周りにおいて、光を前記リングコア内に横断方向に導波できるように、屈折率Δによる前記内側クラッドの前記第1の屈折率よりも大きい第2の屈折率分布とを有するリングコアと、
を備えることを特徴とする横断方向閉ループ導波路共振器。 - 前記閉ループ形状が略球面であることを特徴とする請求項1に記載の横断方向閉ループ共振器。
- 前記閉ループ形状が、略円筒状の形状の周りで略周方向の光伝搬を行うために略円筒状であることを特徴とする請求項1に記載の横断方向閉ループ共振器。
- 前記閉ループ形状が、前記リングコアの外側に存在する少なくとも0.1%の光パワーを有する共振波長において、屈折率導波による共振光学モードを維持するために、前記リングコア用の略円筒状の形状の周りで略周方向の光伝搬を行うために略円筒状であることを特徴とする請求項1に記載の横断方向閉ループ共振器。
- 前記リングコアの対応する表面を囲む前記閉ループ形状に対応する外側クラッドであって、前記リングコアの前記第2の屈折率分布よりも小さい第3の屈折率分布を有する外側クラッドをさらに備えることを特徴とする請求項1に記載の横断方向閉ループ共振器。
- 前記外側クラッドが、空気誘電体の屈折率を有する空気を含むことを特徴とする請求項5に記載の横断方向閉ループファイバ。
- 前記外側クラッドが誘電体導波層を備えることを特徴とする請求項5に記載の横断方向閉ループ共振器。
- 前記誘電体導波層が屈折率勾配を有することを特徴とする請求項7に記載の横断方向閉ループ共振器。
- 前記誘電体導波層が、複合階段型屈折率を有する少なくとも2つの異なる誘電体層を備えることを特徴とする請求項7に記載の横断方向閉ループ共振器。
- 前記内側クラッドが、周囲空気で充填された細長い開口部を有することを特徴とする請求項1に記載の横断方向閉ループ共振器。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/960,831 US7400797B2 (en) | 2004-10-06 | 2004-10-06 | Transverse closed-loop resonator |
PCT/US2005/035589 WO2006041804A1 (en) | 2004-10-06 | 2005-10-04 | Transverse closed-loop resonator |
Publications (1)
Publication Number | Publication Date |
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JP2008516285A true JP2008516285A (ja) | 2008-05-15 |
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ID=35520048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007535739A Pending JP2008516285A (ja) | 2004-10-06 | 2005-10-04 | 横断方向閉ループ共振器 |
Country Status (10)
Country | Link |
---|---|
US (1) | US7400797B2 (ja) |
EP (1) | EP1797468A1 (ja) |
JP (1) | JP2008516285A (ja) |
KR (1) | KR20070062602A (ja) |
CN (1) | CN101036076A (ja) |
AU (1) | AU2005294513A1 (ja) |
CA (1) | CA2582458A1 (ja) |
NO (1) | NO20071952L (ja) |
TW (1) | TWI269084B (ja) |
WO (1) | WO2006041804A1 (ja) |
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JP2016004247A (ja) * | 2014-06-19 | 2016-01-12 | スタンレー電気株式会社 | 光貯蔵装置 |
JP2016004245A (ja) * | 2014-06-19 | 2016-01-12 | スタンレー電気株式会社 | 光貯蔵装置 |
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AU2005294513A1 (en) | 2006-04-20 |
US7400797B2 (en) | 2008-07-15 |
NO20071952L (no) | 2007-07-02 |
TW200636307A (en) | 2006-10-16 |
WO2006041804A1 (en) | 2006-04-20 |
US20060072875A1 (en) | 2006-04-06 |
CA2582458A1 (en) | 2006-04-20 |
EP1797468A1 (en) | 2007-06-20 |
KR20070062602A (ko) | 2007-06-15 |
TWI269084B (en) | 2006-12-21 |
CN101036076A (zh) | 2007-09-12 |
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