JP2015505995A - 波長を選択的に切り替える方法および装置 - Google Patents
波長を選択的に切り替える方法および装置 Download PDFInfo
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- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/31—Digital deflection, i.e. optical switching
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- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
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- 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
- G02B6/29379—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 characterised by the function or use of the complete device
- G02B6/2938—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
- G02B6/29382—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM including at least adding or dropping a signal, i.e. passing the majority of signals
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- G02B6/35—Optical coupling means having switching means
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- G02B6/356—Switching arrangements, i.e. number of input/output ports and interconnection types in an optical cross-connect device, e.g. routing and switching aspects of interconnecting different paths propagating different wavelengths to (re)configure the various input and output links
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- G02F1/0136—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/292—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection by controlled diffraction or phased-array beam steering
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
- H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
- H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
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- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
- G02B27/285—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining comprising arrays of elements, e.g. microprisms
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Abstract
Description
Claims (15)
- 液晶セルと、
前記液晶セルに隣接する切り替え可能な偏光回折格子(SPG)セルと
を備え、
該SPGは、
第1のガラス基板と、
前記第1のガラス基板を覆う第1の電極層と、
前記第1の電極層を覆う光配向層と、
前記光配向層を覆う液晶材料と、
前記液晶材料を覆う第2の光配向層と、
前記第2の光配向層を覆う第2の電極層と、
前記第2の電極層を覆う第2のガラス基板と
を含む、
前記第1の光配向層および前記第2の光配向層は、円偏光の回転方向が互いに反対である2つの干渉光ビームを使用して露光されることにより物理的に変化した感光性ポリマーを含む、
光スイッチ。 - 第2の液晶セルおよび偏光板を含む可変光減衰器(VOA)と、
前記VOAと前記液晶セルとの間に配置される1/4波長板と、
前記SPGセルの後段側に配置され、かつ前記液晶セルの反対側にあるプリズムまたはミラーと、
前記SPGセルと前記プリズムまたはミラーとの間に配置される1ペア以上の更に別の液晶セルおよび更に別の対応するSPGセルと
を更に備え、
前記光スイッチは、1つの共通ポートを3N個の個別ポートに光接続するように構成される1×3N型光スイッチで、
ここでNは前記光スイッチの液晶セルおよび対応するSPGセルからなる対の数である、
請求項1に記載の光スイッチ。 - 第2の液晶セルおよび偏光板を含む可変光減衰器(VOA)と、
前記SPGセルの後段側に配置され、かつ前記液晶セルの反対側にあるプリズムまたはミラーと、
前記SPGセルと前記プリズムまたはミラーとの間に配置される1つ以上の更に別のSPGセルと
を更に備え、
前記光スイッチは、1つの共通ポートを2N+1−1個の個別ポートに光接続するように構成される1×(2N+1−1)型光スイッチで、
ここでNは前記光スイッチのSPGセルの数である、
請求項1に記載の光スイッチ。 - 前記液晶セルは、入射光偏光を直線偏光から右円偏光または左円偏光に変換する切り替え可能な1/4波長板として構成される、請求項3に記載の光スイッチ。
- 前記液晶セルおよび偏光板を含む可変光減衰器(VOA)と、
前記VOAと前記SPGセルとの間に配置される1/4波長板と、
前記SPGセルの後段側に配置され、かつ前記VOAの反対側にあるプリズムまたはミラーと、
前記SPGセルと前記プリズムまたはミラーとの間に配置される1つ以上の更に別のSPGセルと
を更に備え、
前記光スイッチは、1つの共通ポートを2N個の個別ポートに光接続するように構成される1×2N型光スイッチで、
ここでNは前記光スイッチのSPGセルの数である、
請求項1に記載の光スイッチ。 - 前記液晶セルおよび前記SPGセルは共に、波長チャネル数に対応する複数の画素を含み、
該複数の画素は、かつ光スイッチポートに対応する光スイッチを通過する複数の平行ビーム光路の方向に対して垂直に配列され、
前記光スイッチは、等しい距離を、前記光スイッチからの平行出力光ビームの間に有するように設計される、
請求項1に記載の光スイッチ。 - 1つ以上の入射光ビームを前記液晶セルおよび前記SPGセルに送信するとともに前記液晶セルおよび前記SPGセルから受信するファイバアレイと、
前記光路上にあって、前記ファイバアレイの後段側に配置されるマイクロレンズアレイと、
前記光路上であって前記マイクロレンズアレイの後段側に配置されるビーム偏向器と、
前記光路上であって前記ビーム偏向器の後段側に配置される1/2波長板アレイと、
前記光路上であって前記1/2波長板アレイと前記SPGセルを有する前記液晶セルとの間に配置されるシリンドリカルレンズと、
前記光路上で前記シリンドリカルレンズの後方に位置する前記液晶セルおよび前記SPGセルに対向し、かつ前記シリンドリカルレンズを通過する光ビームを反対方向に反射して前記シリンドリカルレンズを通過させるように配置されるシリンドリカル反射ミラーと、
前記光路上で前記シリンドリカルレンズの後方に位置する前記シリンドリカル反射ミラーに対向し、かつ前記シリンドリカルレンズを通過する光ビームを前記シリンドリカルレンズへ戻るように回折させるように配置される回折格子と
を更に備える、請求項1に記載の光スイッチ。 - 前記SPGセルは、電圧が印加されていない状態または第1の電圧が前記第1の電極層と前記第2の第1の電極層との間に印加されている状態で、円偏光を所定方向に有する入射光ビームを回折させ、かつ前記回折入射光ビームの円偏光の回転方向を反転させるように構成される、請求項1に記載の光スイッチ。
- 前記SPGセルは、第2の電圧が前記第1の電極層と前記第2の第1の電極層との間に印加されている状態で、回折も偏光の変化も起こすことなく入射光ビームに前記SPGセルを通過させるように構成される、請求項8に記載の光スイッチ。
- 前記液晶セルは、電圧が印加されていない状態または第1の電圧が前記液晶セルの両端に印加されている状態で、円偏光の回転方向を反転させた後に、前記円偏光を有する入射光ビームを通過させて前記SPGセルに到達させるか、あるいはそのかわりに、第2の電圧が前記液晶セルの両端に印加されている状態で、前記円偏光の回転方向を変化させることなく前記入射光ビームを通過させるように構成される、請求項1に記載の光スイッチ。
- 液晶セルと、
前記液晶セルに隣接するポリマー液晶偏光回折格子(PPG)セルと
を備え、該PPGは、
ガラス基板と、
前記ガラス基板を覆い、かつ円偏光の回転方向が互いに反対である2つの干渉光ビームを使用して露光されることにより物理的に変化している感光性ポリマーを含む光配向層と、
前記光配向層を前記ガラス基板の反対側で覆い、かつ均一光ビームを用いる照射により物理的に変化した重合液晶層と
を含む、光スイッチ。 - 第2の液晶セルおよび偏光板を含む可変光減衰器(VOA)と、
前記SPGセルの後段側に配置され、かつ前記液晶セルの反対側にあるプリズムまたはミラーと、
前記PPGセルと前記プリズムまたはミラーとの間に配置される1対以上の更に別の液晶セルおよび更に別の対応するPPGセルからなる対と
を更に備え、
前記光スイッチは、1つの共通ポートを2N個の個別ポートに光接続するように構成される1×2N型光スイッチで、
ここでNは前記光スイッチの液晶セル群および対応するPPGセルからなる対の数である、
請求項11に記載の光スイッチ。 - 前記液晶セルおよび前記PPGセルは共に、波長チャネル数に対応する複数の画素を含み、
該複数の画素は、光スイッチポートに対応する前記光スイッチを通過する複数の平行ビーム光路の方向に対して垂直に配列され、
前記光スイッチは、等しい距離を、前記光スイッチからの平行出力光ビーム群間に有するように設計される、請求項11に記載の光スイッチ。 - 1つ以上の入射光ビームを前記液晶セルおよび前記PPGセルに送信するとともに、前記液晶セルおよび前記PPGセルから受信するファイバアレイと、
前記光路上であって前記ファイバアレイの後段に配置されるマイクロレンズアレイと、
前記光路上であって前記マイクロレンズアレイの後段側に配置されるビーム偏向器と、
前記光路上であって前記ビーム偏向器の後段側に配置される1/2波長板アレイと、
前記光路上であって前記1/2波長板アレイと前記PPGセルを有する前記液晶セルとの間に配置されるシリンドリカルレンズと、
前記光路上で前記シリンドリカルレンズの後方に位置する前記液晶セルおよび前記SPGセルに対向し、かつ前記シリンドリカルレンズを通過する光ビームを反対方向に反射して前記シリンドリカルレンズを通過させるように配置されるシリンドリカル反射ミラーと、
前記光路上で前記シリンドリカルレンズの後方に位置する前記シリンドリカル反射ミラーに対向し、かつ前記シリンドリカルレンズを通過する光ビームを前記シリンドリカルレンズへ戻るように回折させるように配置される回折格子と
を更に備える、請求項11に記載の光スイッチ。 - 前記液晶セルは、電圧が印加されていない状態、または第1の電圧が前記液晶セルの両端に印加されている状態で、前記円偏光の回転方向を反転させた後に、円偏光を有する入射光ビームを通過させて前記PPGセルに到達させるか、あるいはその代わりに、第2の電圧が前記液晶セルの両端に印加されている状態で、前記円偏光の回転方向を反転させることなく前記入射光ビームを通過させるように構成される、請求項11に記載の光スイッチ。
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US10284931B2 (en) | 2014-05-09 | 2019-05-07 | Huawei Technologies Co., Ltd. | Liquid crystal grating-based optical switch |
WO2016175071A1 (ja) * | 2015-04-27 | 2016-11-03 | 国立研究開発法人産業技術総合研究所 | 光ビーム偏向素子およびそれを用いた波長選択クロスコネクト装置、光クロスコネクト装置 |
JPWO2016175071A1 (ja) * | 2015-04-27 | 2017-12-07 | 国立研究開発法人産業技術総合研究所 | 光ビーム偏向素子およびそれを用いた波長選択クロスコネクト装置、光クロスコネクト装置 |
US10613412B2 (en) | 2015-04-27 | 2020-04-07 | National Institute Of Advanced Industrial Science | Light beam deflecting element, wavelength-selective cross-connect device using same, and optical cross-connect device |
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JP2019082518A (ja) * | 2017-10-30 | 2019-05-30 | 有限会社オートクローニング・テクノロジー | 光マトリクススイッチ |
JP7101954B2 (ja) | 2017-10-30 | 2022-07-19 | 株式会社フォトニックラティス | 光マトリクススイッチ |
WO2021161994A1 (ja) * | 2020-02-14 | 2021-08-19 | 富士フイルム株式会社 | 光結合システムおよび光通信デバイス |
JPWO2021161994A1 (ja) * | 2020-02-14 | 2021-08-19 | ||
JP7470775B2 (ja) | 2020-02-14 | 2024-04-18 | 富士フイルム株式会社 | 光結合システムおよび光通信デバイス |
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US9008470B2 (en) | 2015-04-14 |
JP6027628B2 (ja) | 2016-11-16 |
CN103703405B (zh) | 2016-10-05 |
EP2766766A4 (en) | 2015-02-11 |
CN103703405A (zh) | 2014-04-02 |
US20130194537A1 (en) | 2013-08-01 |
US20150185583A1 (en) | 2015-07-02 |
WO2013113278A1 (en) | 2013-08-08 |
US9201286B2 (en) | 2015-12-01 |
EP2766766A1 (en) | 2014-08-20 |
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