JP4564923B2 - 電気光学ウィスパリングギャラリモード共振器を有する同調可能光フィルタ - Google Patents
電気光学ウィスパリングギャラリモード共振器を有する同調可能光フィルタ Download PDFInfo
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- JP4564923B2 JP4564923B2 JP2005518867A JP2005518867A JP4564923B2 JP 4564923 B2 JP4564923 B2 JP 4564923B2 JP 2005518867 A JP2005518867 A JP 2005518867A JP 2005518867 A JP2005518867 A JP 2005518867A JP 4564923 B2 JP4564923 B2 JP 4564923B2
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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
-
- 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
- G02F1/011—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 in optical waveguides, 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
- G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/035—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect in an optical waveguide structure
-
- 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
- G02B6/2935—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means
- G02B6/29352—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means in a light guide
-
- 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
- G02F2203/00—Function characteristic
- G02F2203/05—Function characteristic wavelength dependent
- G02F2203/055—Function characteristic wavelength dependent wavelength filtering
-
- 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
- G02F2203/00—Function characteristic
- G02F2203/15—Function characteristic involving resonance effects, e.g. resonantly enhanced interaction
Description
本出願は、2003年2月3日出願の米国仮出願第60/444,423号、名称「ウィスパリングギャラリモードに基づく同調可能フィルタ」の恩典を主張する。
本明細書で説明するシステムおよび技法は、NASA契約のもとで業務実行が成された。契約者が権利を保持するよう選ばれるPublic Law 96−517(35
USC 202)の規定を受ける。
本出願は、光共振器およびキャビティに基づく光フィルタに関する。
本出願は、電気光学効果を示すWGM共振器を用いる同調可能光フィルタの各種の実施の形態を説明する。一実施の形態では、入力光信号は、ウィスパリングギャラリモードをサポートするよう構成するとともに、ウィスパリングギャラリモードが存在する部分を備える光共振器に導かれる。光共振器の少なくとも一部は、電気光学効果を示す。光を結合して光共振器から取りだして、入力光信号からフィルタ処理した光出力を生成する。電気制御信号を光共振器の少なくとも一部に印加して光共振器の伝送スペクトルピークを同調し、それによりフィルタ処理光出力で、入力光信号のスペクトル成分を選択する。
WGM共振器は、WGMモードで共鳴する波長で光を伝送する。従って、WGM共振器の共鳴状態は、共振器の高いクオリティファクタQにより、狭い帯域幅をもつスペクトル伝送窓を生成する。WGM共振器はローレンツ型フィルタ関数を生成してもよい。WG共振器の伝送ピークは、WGモードが影響を受ける屈折率変化により同調できる。従って、WGM共振器全体、または少なくともWGモードが存在する領域が電気光学効果を示す場合、DC電圧等の電気制御信号を共振器に印加してフィルタ機能を同調できる。以下に説明するように、このような同調可能WGM共振器フィルタの構造は小型の設計として、低い光損失(例えば、約20dB以下)をもつ109Hzのオーダーの広い同調可能スペクトル範囲、および約数十μ秒以下の高い同調速度を持たせることができる。
Claims (11)
- 多数の信号チャンネルを搬送するRF、又はマイクロ波周波数の入力信号で光変調器を用いて光ビームを変調し、前記変調された光ビームを光共振器を用いてフィルタ処理し、前記フィルタ処理された光ビームを光検出器を用いて出力信号へ変換する方法であって、前記光共振器は、ウィスパリングギャラリモードをサポートするとともに前記ウィスパリングギャラリモードが存在する一部を備え、前記光共振器の少なくとも前記一部は電気光学効果を示し、
非変調光ビームから第1光ビームと第2光ビームを得るステップと、
前記光変調器を通過するように前記第1光ビームを導き、前記光変調器に前記入力信号を印加して前記光変調器を制御し、前記第1光ビームを前記入力信号を搬送するための光に変調するステップと、
分岐した光路を通過するように前記第2光ビームを光遅延光路を通して導くステップと、
前記光共振器を通過するように前記変調された光ビームを導き、前記光共振器の少なくとも前記一部に電気制御信号を印加して前記光共振器のスペクトル伝送ピークを同調し、前記多数の信号チャンネルのうち選択された選択信号チャンネルだけを搬送する前記フィルタ処理された光ビームを生成するステップと、
前記フィルタ処理された光ビーム、及び前記第2光ビームを合成し、合成光信号を生成するステップと、
前記光検出器を用いて前記合成光信号を、前記多数の信号チャンネルを搬送するRF又はマイクロ波周波数のフィルタ処理されたRF又はマイクロ波の出力信号であって前記選択信号チャンネルを搬送する出力信号へ変換するステップと、
を含む方法。 - 請求項1に記載の方法において、
前記フィルタ処理された光ビームを生成するステップは、
ウィスパリングギャラリモードにおけるTMモードを使用して前記光変調器からの光を前記光共振器へ結合させるステップと、
前記光共振器から光を取り出して前記フィルタ処理された光ビームを生成するステップと、
を含む、方法。 - 請求項1に記載の方法において、
前記フィルタ処理された光ビームを生成するステップは、
ウィスパリングギャラリモードにおけるTEモードを使用して前記光変調器からの光を前記光共振器へ結合させるステップと、
前記光共振器から光を取り出して前記フィルタ処理された光ビームを生成するステップと、
を含む、方法。 - 請求項1に記載の方法において、
前記フィルタ処理された光ビームを生成するステップは、
前記光共振器にエバネッセント結合された入力光結合器を使用して、前記光変調器からの光を前記光共振器へ結合させるステップと、
前記光共振器にエバネッセント結合された出力光結合器を使用して、前記フィルタ処理された光ビームを前記光共振器から取り出すステップと、
を含む、方法。 - 請求項4に記載の方法において、
前記入力光結合器、及び前記出力光結合器の少なくとも1つはファイバ結合器である、方法。 - 請求項4に記載の方法において、
前記入力光結合器、及び前記出力光結合器の少なくとも1つは導波路を含む、方法。 - 請求項4に記載の方法において、
前記入力光結合器、及び前記出力光結合器の少なくとも1つは光ギャップ材料を含む、方法。 - 請求項4に記載の方法において、
前記入力光結合器、及び前記出力光結合器の少なくとも1つはプリズムを含む、方法。 - 請求項1に記載の方法において、
前記光共振器は前記ウィスパリングギャラリモードをサポートする非球形の一部を含む、方法。 - 請求項1に記載の方法において、
前記光共振器は前記ウィスパリングギャラリモードをサポートする回転楕円体の少なくとも一部を含む、方法。 - 請求項1に記載の方法において、
前記光共振器は前記ウィスパリングギャラリモードをサポートする球形の少なくとも一部を含む、方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44442303P | 2003-02-03 | 2003-02-03 | |
US10/702,201 US6987914B2 (en) | 2002-05-17 | 2003-11-04 | Optical filter having coupled whispering-gallery-mode resonators |
PCT/US2004/003043 WO2004070432A2 (en) | 2003-02-03 | 2004-02-03 | Tunable optical filters having electro-optic whispering-gallery-mode resonators |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010000152A Division JP2010140037A (ja) | 2003-02-03 | 2010-01-04 | 電気光学ウィスパリングギャラリモード共振器を有する同調可能光フィルタ |
Publications (2)
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JP2006515081A JP2006515081A (ja) | 2006-05-18 |
JP4564923B2 true JP4564923B2 (ja) | 2010-10-20 |
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JP2005518867A Expired - Fee Related JP4564923B2 (ja) | 2003-02-03 | 2004-02-03 | 電気光学ウィスパリングギャラリモード共振器を有する同調可能光フィルタ |
Country Status (4)
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EP (1) | EP1595167A4 (ja) |
JP (1) | JP4564923B2 (ja) |
CA (1) | CA2514818A1 (ja) |
WO (1) | WO2004070432A2 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4836226B2 (ja) * | 2005-03-22 | 2011-12-14 | 日本電信電話株式会社 | 光回路 |
US7218803B1 (en) * | 2006-03-24 | 2007-05-15 | Fitel Usa Corp. | Microsphere probe for optical surface microscopy and method of using the same |
JP4910887B2 (ja) * | 2007-05-29 | 2012-04-04 | 沖電気工業株式会社 | 光共振器、波長フィルタ及び光センサ |
WO2009114163A2 (en) * | 2008-03-11 | 2009-09-17 | Oewaves, Inc. | Optical locking based on optical resonators with high quality factors |
US20150285728A1 (en) | 2009-12-11 | 2015-10-08 | Washington University | Detection of nano-scale particles with a self-referenced and self-heterodyned raman micro-laser |
US11754488B2 (en) | 2009-12-11 | 2023-09-12 | Washington University | Opto-mechanical system and method having chaos induced stochastic resonance and opto-mechanically mediated chaos transfer |
US8514400B2 (en) | 2010-03-23 | 2013-08-20 | Oewaves, Inc. | Optical gyroscope sensors based on optical whispering gallery mode resonators |
US9766402B2 (en) | 2013-06-12 | 2017-09-19 | Washington University | Tunable add-drop filter with an active resonator |
WO2015137945A1 (en) * | 2014-03-12 | 2015-09-17 | Oewaves, Inc. | Systems and methods for removing mode families |
US10591312B2 (en) * | 2017-02-08 | 2020-03-17 | Honeywell International Inc. | Whispering gallery mode based range-resolved air data system |
Family Cites Families (8)
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JP2713358B2 (ja) * | 1995-01-13 | 1998-02-16 | 岡山大学長 | ピルボックス型光共振器の波長選択フィルタ |
JP2003501674A (ja) * | 1998-11-13 | 2003-01-14 | カリフォルニア・インスティチュート・オブ・テクノロジー | 共振器と光ファイバーの両方向性カプラ |
US6798947B2 (en) * | 2000-02-10 | 2004-09-28 | California Institute Of Technology | Coupling system to a microsphere cavity |
AU2001239789A1 (en) * | 2000-02-17 | 2001-08-27 | Cquint Communications Corporation | Cylindrical processing of optical media |
EP1266253A4 (en) * | 2000-03-22 | 2005-08-03 | California Inst Of Techn | MICROACTIVITY OF A NON-SPHERICAL RESONATOR IN ECHO MODE |
CA2411348A1 (en) * | 2000-06-15 | 2001-12-20 | California Institute Of Technology | Direct electrical-to-optical conversion and light modulation in micro whispering-gallery-mode resonators |
GB2377504B (en) * | 2001-07-13 | 2005-02-02 | Aston Photonic Tech Ltd | Optical filters |
US7245801B2 (en) * | 2002-03-21 | 2007-07-17 | University Of Rochester | Apparatus with a series of resonator structures situated near an optical waveguide for manipulating optical pulses |
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2004
- 2004-02-03 JP JP2005518867A patent/JP4564923B2/ja not_active Expired - Fee Related
- 2004-02-03 EP EP04707796A patent/EP1595167A4/en not_active Withdrawn
- 2004-02-03 CA CA002514818A patent/CA2514818A1/en not_active Abandoned
- 2004-02-03 WO PCT/US2004/003043 patent/WO2004070432A2/en active Application Filing
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EP1595167A4 (en) | 2010-01-20 |
CA2514818A1 (en) | 2004-08-19 |
WO2004070432A3 (en) | 2005-07-07 |
JP2006515081A (ja) | 2006-05-18 |
WO2004070432A2 (en) | 2004-08-19 |
EP1595167A2 (en) | 2005-11-16 |
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