JP5360256B2 - 光導波路素子 - Google Patents
光導波路素子 Download PDFInfo
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- JP5360256B2 JP5360256B2 JP2012080444A JP2012080444A JP5360256B2 JP 5360256 B2 JP5360256 B2 JP 5360256B2 JP 2012080444 A JP2012080444 A JP 2012080444A JP 2012080444 A JP2012080444 A JP 2012080444A JP 5360256 B2 JP5360256 B2 JP 5360256B2
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- optical waveguide
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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
- G02F1/03—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
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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
- G02F1/03—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
- G02F1/0356—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 controlled by a high-frequency electromagnetic wave component in an electric waveguide structure
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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
- G02F1/03—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
- G02F1/0305—Constructional arrangements
-
- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/07—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 buffer layer
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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
- G02F2202/00—Materials and properties
- G02F2202/22—Antistatic materials or arrangements
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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
- G02F2203/00—Function characteristic
- G02F2203/21—Thermal instability, i.e. DC drift, of an optical modulator; Arrangements or methods for the reduction thereof
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Description
図1に示すように、本発明の光導波路素子は、電気光学効果を有する基板と、該基板に形成された光導波路と、該基板の上に形成されたバッファ層(BF層)と、該バッファ層上に形成され、該光導波路を伝搬する光波を変調する変調電極(信号電極,接地電極)とを有する光導波路素子において、該基板と該バッファ層との間に、該基板に発生する電荷を拡散するチャージ拡散層を形成し、該チャージ拡散層は、該変調電極を構成する接地電極に電気的に接続されていることを特徴とする。
ただし、全面にチャージ拡散層を形成する場合には、信号電極下の光導波路との相互作用領域とその近傍を含む領域と、接地電極下の光導波路との相互作用領域とその近傍を含む領域間において“電気的に短絡”または“抵抗値が極端に低下”することを避ける必要がある。なお、本発明における相互作用部とは、変調電極(信号電極と接地電極)が形成する電界が光導波路に印加される部分を意味する。
この場合、Siなどの半導体材料を使用した層を介して低屈折率材料からなるチャージ拡散層を接続することが好ましい。また、チャージ拡散層より電気抵抗値の高い部材を使用することも可能である。
Claims (6)
- 電気光学効果を有する基板と、該基板に形成された光導波路と、該基板の上に形成されたバッファ層と、該バッファ層上に形成され、該光導波路を伝搬する光波を変調する変調電極とを有する光導波路素子において、
該基板と該バッファ層との間に、該基板に発生する電荷を拡散するチャージ拡散層を形成し、
該チャージ拡散層は、該変調電極を構成する接地電極に電気的に接続され、
該チャージ拡散層は、少なくとも該変調電極を構成する信号電極下の光導波路との相互作用領域とその近傍を含む領域、及び該接地電極下の光導波路との相互作用領域とその近傍を含む領域で分離して、かつ該光導波路より低い屈折率を有する低屈折率材料で形成され、
前記信号電極下のチャージ拡散層と前記接地電極下のチャージ拡散層との間は、前記信号電極下のチャージ拡散層及び前記接地電極下のチャージ拡散層より抵抗値の高い部材で電気的に接続されていることを特徴とする光導波路素子。 - 請求項1に記載の光導波路素子において、前記抵抗値の高い部材は、半導体材料から構成されていることを特徴とする光導波路素子。
- 請求項1に記載の光導波路素子において、前記抵抗値の高い部材は、前記信号電極下のチャージ拡散層及び前記接地電極下のチャージ拡散層と同じ低屈折率材料で構成されると共に、前記信号電極下のチャージ拡散層及び前記接地電極下のチャージ拡散層よりも膜厚が小さいことを特徴とする光導波路素子。
- 請求項1乃至3のいずれかに記載の光導波路素子において、該チャージ拡散層は、導電膜又は半導体膜であることを特徴とする光導波路素子。
- 請求項4に記載の光導波路素子において、該チャージ拡散層の膜厚は、0.05〜0.6μmであることを特徴とする光導波路素子。
- 請求項1乃至5のいずれかに記載の光導波路素子において、該チャージ拡散層と該接地電極との電気的接続は、前記接地電極下のチャージ拡散層と該接地電極との間の、該バッファ層を貫通するビア接続、基板側面に設けた導電膜、又は、バッファ層の一部を除去して配置された接続層のいずれかで構成されていることを特徴とする光導波路素子。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012080444A JP5360256B2 (ja) | 2012-03-30 | 2012-03-30 | 光導波路素子 |
US14/389,416 US9291838B2 (en) | 2012-03-30 | 2013-03-29 | Optical waveguide element |
CN201380017120.6A CN104204917B (zh) | 2012-03-30 | 2013-03-29 | 光波导元件 |
PCT/JP2013/059479 WO2013147129A1 (ja) | 2012-03-30 | 2013-03-29 | 光導波路素子 |
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JP2012080444A JP5360256B2 (ja) | 2012-03-30 | 2012-03-30 | 光導波路素子 |
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JP2013210484A JP2013210484A (ja) | 2013-10-10 |
JP5360256B2 true JP5360256B2 (ja) | 2013-12-04 |
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US (1) | US9291838B2 (ja) |
JP (1) | JP5360256B2 (ja) |
CN (1) | CN104204917B (ja) |
WO (1) | WO2013147129A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7115483B2 (ja) * | 2017-08-24 | 2022-08-09 | Tdk株式会社 | 光変調器 |
US11366344B2 (en) * | 2017-10-02 | 2022-06-21 | Tdk Corporation | Optical modulator |
US11841562B1 (en) * | 2018-08-29 | 2023-12-12 | Eospace Inc. | Electro-optic modulation of multiple phase modulator waveguides with a single electrode |
US11009727B2 (en) | 2018-11-13 | 2021-05-18 | International Business Machines Corporation | Integrated waveguide structure with pockels layer having a selected crystal orientation |
JP7404696B2 (ja) * | 2019-07-30 | 2023-12-26 | 富士通オプティカルコンポーネンツ株式会社 | 光デバイス |
JP2021039056A (ja) * | 2019-09-05 | 2021-03-11 | 日本放送協会 | 光電界センサヘッド |
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US4546244A (en) * | 1984-03-14 | 1985-10-08 | At&T Bell Laboratories | Nonlinear and bistable optical device |
US4693549A (en) * | 1985-04-04 | 1987-09-15 | United Technologies Corporation | Optically buffered waveguide modulator |
JPH01302325A (ja) * | 1988-05-31 | 1989-12-06 | Fujitsu Ltd | 光導波路デバイスおよびその形成方法 |
US5153930A (en) * | 1990-01-04 | 1992-10-06 | Smiths Industries Aerospace & Defense Systems, Inc. | Device employing a substrate of a material that exhibits the pyroelectric effect |
JPH0643503A (ja) * | 1990-05-15 | 1994-02-18 | Oki Electric Ind Co Ltd | 光デバイス |
US5388170A (en) * | 1993-11-22 | 1995-02-07 | At&T Corp. | Electrooptic device structure and method for reducing thermal effects in optical waveguide modulators |
JPH07335981A (ja) * | 1994-06-07 | 1995-12-22 | Mitsubishi Electric Corp | 半導体発光素子,レーザアンプ,及び増幅機能を有する波長可変フィルタ |
JPH11509047A (ja) * | 1996-04-24 | 1999-08-03 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | 放射放出半導体ダイオード及びその製造方法 |
US6198855B1 (en) * | 1996-07-19 | 2001-03-06 | Jds Uniphase Corporation | Velocity-matched, traveling-wave electro-optical devices using non-conductive and conductive polymer buffer layers |
JP4951176B2 (ja) * | 2001-09-07 | 2012-06-13 | 住友大阪セメント株式会社 | 光変調器 |
US6885780B2 (en) * | 2002-12-17 | 2005-04-26 | Jdsu Uniphase Corporation | Suppression of high frequency resonance in an electro-optical modulator |
JP2005201732A (ja) * | 2004-01-14 | 2005-07-28 | Tamagawa Seiki Co Ltd | レゾルバステータ構造 |
US7408693B2 (en) * | 2004-07-27 | 2008-08-05 | Jds Uniphase Corporation | Electro-optic device |
JP4927358B2 (ja) * | 2004-07-27 | 2012-05-09 | ジェイディーエス ユニフェイズ コーポレーション | バッファ層を有する低バイアス・ドリフト変調器 |
JP4227595B2 (ja) * | 2004-10-01 | 2009-02-18 | アンリツ株式会社 | 光変調器 |
JP2006317550A (ja) * | 2005-05-10 | 2006-11-24 | Anritsu Corp | 光変調器 |
JP2007079249A (ja) * | 2005-09-15 | 2007-03-29 | Anritsu Corp | 光変調器 |
US20080298736A1 (en) * | 2007-06-04 | 2008-12-04 | Lumera Corporation | Broadband Electro-Optic Polymer Modulators With Integrated Resistors |
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2012
- 2012-03-30 JP JP2012080444A patent/JP5360256B2/ja active Active
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2013
- 2013-03-29 US US14/389,416 patent/US9291838B2/en active Active
- 2013-03-29 WO PCT/JP2013/059479 patent/WO2013147129A1/ja active Application Filing
- 2013-03-29 CN CN201380017120.6A patent/CN104204917B/zh active Active
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Publication number | Publication date |
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US9291838B2 (en) | 2016-03-22 |
CN104204917A (zh) | 2014-12-10 |
WO2013147129A1 (ja) | 2013-10-03 |
JP2013210484A (ja) | 2013-10-10 |
US20150078701A1 (en) | 2015-03-19 |
CN104204917B (zh) | 2015-11-25 |
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