JP2006276654A - 光スイッチ及びその使用方法 - Google Patents
光スイッチ及びその使用方法 Download PDFInfo
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- JP2006276654A JP2006276654A JP2005097919A JP2005097919A JP2006276654A JP 2006276654 A JP2006276654 A JP 2006276654A JP 2005097919 A JP2005097919 A JP 2005097919A JP 2005097919 A JP2005097919 A JP 2005097919A JP 2006276654 A JP2006276654 A JP 2006276654A
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- thin film
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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
- G02F1/35—Non-linear optics
- G02F1/3515—All-optical modulation, gating, switching, e.g. control of a light beam by another light beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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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
- G02F1/0126—Opto-optical modulation, i.e. control of one light beam by another light beam, not otherwise provided for in this subclass
-
- 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
- G02F1/0147—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 thermo-optic effects
-
- 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
- G02F2202/00—Materials and properties
- G02F2202/36—Micro- or nanomaterials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
【解決手段】 光学媒体3中に設けられた光路2より金属酸化物の微結晶を含む非線形光学薄膜1に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射し、全反射現象を誘起することにより信号光の反射・透過挙動を制御して信号光をスイッチングする光スイッチにおいて、該非線形光学薄膜の屈折率の温度係数と該非線形光学薄膜に接する該光学媒体の屈折率の温度係数との差を15×10−6/℃以下にする。好ましくはゼロないしはほぼゼロにする。これにより、温度上昇による影響が相殺され、スイッチングの誤動作を回避できる。
【選択図】図1
Description
Claims (7)
- 光学媒体中に設けられた光路より金属酸化物の微結晶を含む非線形光学薄膜に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射し、全反射現象を誘起することにより信号光の反射・透過挙動を制御して信号光をスイッチングする光スイッチにおいて、前記非線形光学薄膜の屈折率の温度係数と前記非線形光学薄膜に接する前記光学媒体の屈折率の温度係数との差を15×10−6/℃以下にしたことを特徴とする光スイッチ。
- 光学媒体中に設けられた光路より金属酸化物の微結晶を含む非線形光学薄膜に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射し、全反射現象を誘起することにより信号光の反射・透過挙動を制御して信号光をスイッチングする光スイッチにおいて、前記非線形光学薄膜を熱膨張係数が正の値を有する材料で構成し、前記非線形光学薄膜に接する前記光学媒体を熱膨張係数が負の値を有する材料で構成することを特徴とする光スイッチ。
- 光学媒体中に設けられた光路より非線形光学薄膜に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射して全反射現象を誘起することにより信号光の反射・透過挙動を制御してスイッチングする光スイッチにおいて、前記非線形光学薄膜が正の屈折率の温度係数を有する膜と負の屈折率の温度係数を有する膜との積層膜からなることを特徴とする光スイッチ。
- 光学媒体中に設けられた光路より非線形光学薄膜に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射して全反射現象を誘起することにより信号光の反射・透過挙動を制御してスイッチングする光スイッチにおいて、前記非線形光学薄膜が金属酸化物の粒子と負の屈折率の温度係数を有する有機材料の複合体からなることを特徴とする光スイッチ。
- 光学媒体中に設けられた光路より非線形光学薄膜に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射して全反射現象を誘起することにより信号光の反射・透過挙動を制御して信号光をスイッチングする光スイッチにおいて、前記非線形光学薄膜の温度を最大頻度の励起光照射条件時の温度で保持することを特徴とする光スイッチ。
- 請求項5において、前記非線形光学薄膜の近傍に設置された加熱手段を用い、前記非線形光学薄膜の温度を最大頻度の励起光照射条件時の温度で保持できるよう、励起頻度が小さいときは加熱量を大きく、励起頻度が大きいときは加熱量を小さくする制御を行うことを特徴とする光スイッチ。
- 光学媒体中に設けられた光路より非線形光学薄膜に信号光を斜入射し、該非線形光学薄膜に可視励起光を照射して全反射現象を誘起することにより信号光の反射・透過挙動を制御して信号光をスイッチングする光スイッチを複数組設け、これらの光スイッチより低速の光スイッチにより前記複数組の光スイッチを交互に間欠使用することを特徴とする光スイッチの使用方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005097919A JP2006276654A (ja) | 2005-03-30 | 2005-03-30 | 光スイッチ及びその使用方法 |
US11/355,016 US7474818B2 (en) | 2005-03-30 | 2006-02-16 | Optical switch and method of using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005097919A JP2006276654A (ja) | 2005-03-30 | 2005-03-30 | 光スイッチ及びその使用方法 |
Publications (1)
Publication Number | Publication Date |
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JP2006276654A true JP2006276654A (ja) | 2006-10-12 |
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ID=37070852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005097919A Abandoned JP2006276654A (ja) | 2005-03-30 | 2005-03-30 | 光スイッチ及びその使用方法 |
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US (1) | US7474818B2 (ja) |
JP (1) | JP2006276654A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8400703B2 (en) | 2007-06-19 | 2013-03-19 | Nec Corporation | Optical switch |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5739948A (en) * | 1995-10-12 | 1998-04-14 | Dow Corning Asia, Ltd. | Refractive index modulation device and method of refractive index modulation |
JP3815811B2 (ja) | 1995-10-12 | 2006-08-30 | ダウ・コ−ニング・コ−ポレ−ション | 屈折率変調素子及び屈折率変調方法 |
WO2001027689A1 (fr) * | 1999-10-15 | 2001-04-19 | Hitachi, Ltd. | Element a fonctionnalite optique, son procede de production et son application |
JP2003228088A (ja) * | 2002-02-01 | 2003-08-15 | Hitachi Ltd | 光スイッチ |
JP2003295237A (ja) * | 2002-03-29 | 2003-10-15 | Hitachi Ltd | 多重分割型光スイッチ |
US6844092B2 (en) * | 2002-08-22 | 2005-01-18 | Hitachi, Ltd. | Optically functional element and production method and application therefor |
JP2004133329A (ja) * | 2002-10-15 | 2004-04-30 | Hitachi Ltd | 非線形光学薄膜及びそれを用いた非線形光学素子並びにそれを用いた光スイッチ |
JP4045938B2 (ja) | 2002-11-29 | 2008-02-13 | 株式会社日立製作所 | 光スイッチとその素子 |
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2005
- 2005-03-30 JP JP2005097919A patent/JP2006276654A/ja not_active Abandoned
-
2006
- 2006-02-16 US US11/355,016 patent/US7474818B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8400703B2 (en) | 2007-06-19 | 2013-03-19 | Nec Corporation | Optical switch |
Also Published As
Publication number | Publication date |
---|---|
US20060222834A1 (en) | 2006-10-05 |
US7474818B2 (en) | 2009-01-06 |
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