JP2005517208A - 光周波数信号と無線周波数信号との間の変換 - Google Patents
光周波数信号と無線周波数信号との間の変換 Download PDFInfo
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- G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
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- G02F1/065—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 electro-optical organic material in an optical waveguide structure
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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
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- G02F1/025—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
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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
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- 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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Abstract
マイクロストリップ(15)に対して横切るよう延在するビバルディ・アンテナの形式の遷移無線信号導波構成要素(20,21)が、マイクロストリップ無線信号導波構成要素(15,16)を矩形断面導波管(18)及び整合負荷と接続する。遷移無線信号導波構成要素(20,21)のそれぞれが、マイクロストリップ導波路(16)の導電性接地平面で形成された漸進的に変化する幅の開口を備える。無線周波数信号共振器(24〜27)が、マイクロストリップ(15)の端部、及びビバルディ・アンテナの小さい端部を延伸させる。
Description
本発明は、無線周波数で変調された光放射に関し、より詳細には、変調された光信号を発生する装置、及び光信号上の被変調無線信号を検出する装置に関する。
米国特許明細書No.5917636に記載された無線周波数で変調された光ファイバ・システムのような無線周波数で変調された光ファイバ・システムは、広い範囲をカバーする移動ネットワークを作るのを可能にする。これらのシステムは、データ速度及び自由スペクトル範囲、及び設置される装置及びインフラストラクチャの拡大に関する絶え間ない需要の増大を受け入れることが可能である。これらのシステムの周波数の増大は、ネットワークの無線周波数部分で用いられるアンテナ及びデバイスのサイズの低減、及びシステム全体の帯域幅の増大を可能にする。155MBit/s(メガビット/秒)以上のデータ速度に関して、ITUにより未だ割り当てられていない62−63GHzと65−66GHzの2つのスペクトル範囲が、NBSプロジェクト(RACE 2067)の枠組み内で特にそのようなシステムに適したものとして確認された。
本発明は、添付の特許請求の範囲に記載されるように光信号と無線周波数信号との間で変換する装置を提供する。
添付図面は、本発明の一実施形態に従った光信号と無線周波数信号との間で変換する装置を示す。図面の図2から図6に示される装置は、光対無線周波数検出器(optical to radio frequency detector)であり、そして本発明のこの実施形態は、検出器を参照して記載されるが、しかし、類似の設計原理が光信号を無線周波数信号で変調する変調器に適用されることができることが認められるであろう。この設計原理はまた、送受信機、即ち、第1の無線信号により変調された光信号を受信し、第1の無線信号を検出し、そしてその他の所へ送信される第2の無線信号で当該光信号を変調する装置に適用可能である。
本発明の好適な実施形態においては、接地平面16は、チタンの層上に被着された金の層から形成され、そのチタンの層は、それ自体、支持体として働くケイ酸(シリカ)の層17上に被着される。
Claims (18)
- 光信号と無線周波数信号との間で変換する装置であって、無線周波数に対応する量だけ異なる周波数を有する2つの光信号成分を伝搬させる光導波路(11〜14)と、無線信号を前記無線周波数で伝搬させる第1の無線信号導波構成要素(15,16)とを備え、前記第1の無線信号導波構成要素が、前記光導波路の相互作用領域(14)と結合され、前記相互作用領域が、前記光信号成分と前記無線信号との間の相互作用が生じる材料を備える、前記装置において、
第2の無線信号導波構成要素(20,21)が、前記第1の無線信号導波構成要素(15,16)を第3の無線信号導波構成要素(18)と接続し、
前記第2の無線信号導波構成要素(20,21)が、前記第1(15,16)及び第3(18)の無線信号導波構成要素の伝搬特性に適合する漸進的に変化する断面を有し、
無線周波数信号共振器手段(24〜27)が、前記第1及び第2の無線信号導波構成要素と接続されている
ことを特徴とする装置。 - 前記第1の無線信号導波構成要素(15,16)が、前記光導波路の前記相互作用領域(14)と進行波結合状態にある請求項1記載の装置。
- 前記相互作用領域(14)、及び前記第1の無線信号導波構成要素(15,16)の前記進行波結合が、前記第1の無線信号導波構成要素(15,16)における前記無線信号の波長と少なくとも同程度長い前記光導波路の長さに延在する請求項2記載の装置。
- 前記相互作用領域(14)における前記光信号成分の伝搬速度と前記無線信号導波路(15,16)における前記無線信号の伝搬速度とが実質的に等しい請求項1から3のいずれか一項に記載の装置。
- 前記第1の無線信号導波構成要素(15,16)が細長い部材(15)を備え、当該細長い部材(15)の少なくとも一部が前記相互作用領域(14)と並置されており、
前記共振器手段が、前記細長い部材(15)の各端部を終端するインピーダンス整合拡大部(24,25)を備える
請求項1から4のいずれか一項に記載の装置。 - 前記共振器手段が、前記第2の無線信号導波構成要素(20,21)の端部を終端するインピーダンス整合拡大部を備える請求項1から5のいずれか一項に記載の装置。
- 前記第2(20,21)及び第3(18)の無線信号導波構成要素が、前記第1の無線信号導波構成要素(15)に対して横切るよう延在する請求項1から6のいずれか一項に記載の装置。
- 前記光導波路(11〜14)が、前記の相互作用材料に形成されたリッジ(14)を、異なる伝搬特性の材料(11)との境界に備え、
前記の相互作用材料は、前記光信号成分が前記リッジ(14)に沿って伝搬するようチャネルを通って伝送(channel)されるような寸法を有する
請求項1から7のいずれか一項に記載の装置。 - 前記第1の無線信号導波構成要素(15,16)が、前記相互作用領域(14)の一方の側で前記相互作用領域(14)と並置され且つ当該相互作用領域(14)に沿って延在する導電性ストリップ(15)と、前記相互作用領域(14)の反対側で前記相互作用領域(14)と並置され且つ当該相互作用領域(14)に沿って延在する別の導電性構成要素(16)とを備える請求項1から8のいずれか一項に記載の装置。
- 前記別の導電性構成要素(16)がまた、前記相互作用領域(14)に対して横切るよう延在し、
前記第2の無線信号導波構成要素(20,21)が、前記別の導電性構成要素(16)に形成された漸進的に変化する幅の開口を備える
請求項9記載の装置。 - 前記開口が、第1の端部から第2の端部に向けて漸進的に増大する幅の第1の部分(20,21)を備え、
前記第1の端部が、前記第1の無線信号導波構成要素(15)と結合関係状態で当該第1の無線信号導波構成要素(15)と並置され、
前記共振器手段が、前記第1の端部を終端する前記第1の部分の延長部(26,27)を備える
請求項10記載の装置。 - 前記開口の前記第1の部分(20,21)が一般的にトランペット形状である請求項11記載の装置。
- 前記の第3の結合手段(18)が、実質的に平行な導電性壁を有する細長い導波管を備え、
前記第2の無線信号導波構成要素(20,21)が、前記細長い導波管と結合関係状態で当該細長い導波管内に突き出している
請求項1から12のいずれか一項に記載の装置。 - 前記の相互作用材料が、前記光信号の伝搬に対して2次の非線形偏光特性を与える請求項1から13のいずれか一項に記載の装置。
- 前記の相互作用材料が、前記光信号に対して非中心対称の相互作用特性を与える双極子材料を備える請求項14記載の装置。
- 前記の相互作用材料が、ホスト・マトリクス・ポリマ材料における配向された電気特性を有するジアゾベンゼン発色団材料を含む請求項14記載の装置。
- 請求項1から16のいずれか一項に記載の装置と、
前記2つの光信号成分を前記光導波路(11〜14)に供給する手段(1〜10)と、
前記無線信号導波路(15,16)に結合され、前記無線信号を受信する手段と
を備える光対無線周波数検出器。 - 請求項1から16のいずれか一項に記載の装置と、
前記光信号を前記相互作用領域(14)に供給する手段(1,2)と、
前記無線信号を前記無線信号導波路(15,16)に供給し、それにより前記光信号を前記相互作用領域(14)において変調し、且つ前記光導波路(11〜14)の中を伝搬される前記2つの光信号成分を発生する手段と
を備える光信号を変調する変調器。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02290319A EP1335239B1 (en) | 2002-02-08 | 2002-02-08 | Conversion between optical and radio frequency signals |
PCT/EP2003/000225 WO2003067314A1 (en) | 2002-02-08 | 2003-01-13 | Conversion between optical and radio frequency signals |
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JP2005517208A true JP2005517208A (ja) | 2005-06-09 |
JP4443932B2 JP4443932B2 (ja) | 2010-03-31 |
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JP2003566607A Expired - Fee Related JP4443932B2 (ja) | 2002-02-08 | 2003-01-13 | 光周波数信号と無線周波数信号との間の変換 |
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US (1) | US7340178B2 (ja) |
EP (1) | EP1335239B1 (ja) |
JP (1) | JP4443932B2 (ja) |
KR (1) | KR100754759B1 (ja) |
CN (1) | CN1322357C (ja) |
AT (1) | ATE295971T1 (ja) |
AU (1) | AU2003244490A1 (ja) |
DE (1) | DE60204210T2 (ja) |
HK (1) | HK1075498A1 (ja) |
TW (1) | TWI294223B (ja) |
WO (1) | WO2003067314A1 (ja) |
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EP1361683A1 (en) * | 2002-02-08 | 2003-11-12 | Motorola, Inc. | Optical to radio frequency detector |
US7079722B2 (en) * | 2004-09-22 | 2006-07-18 | Maxentric Technologies Llc | Apparatus and method for transmitting electrical power through a transparent or substantially transparent medium |
US7486247B2 (en) | 2006-02-13 | 2009-02-03 | Optimer Photonics, Inc. | Millimeter and sub-millimeter wave detection |
WO2007094944A2 (en) * | 2006-02-13 | 2007-08-23 | Battelle Memorial Institute | Millimeter and sub-millimeter wave detection |
US8901495B2 (en) * | 2010-03-30 | 2014-12-02 | Lawrence Livermore National Security, Llc. | Room-temperature quantum noise limited spectrometry and methods of the same |
CN102157797A (zh) * | 2011-03-08 | 2011-08-17 | 东南大学 | 宽带高增益平板维瓦尔第天线 |
NL2021950B1 (en) * | 2018-11-07 | 2020-05-15 | Univ Delft Tech | Quantum wavelength converter between a microwave signal and an optical signal |
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US5044725A (en) * | 1986-01-24 | 1991-09-03 | Hoechst Celanese Corp. | Polymeric thin film waveguide media |
US5459800A (en) * | 1992-07-30 | 1995-10-17 | Matsushita Electric Industrial Co., Ltd. | Optical modulation device and method of driving the same |
US5430568A (en) * | 1992-12-01 | 1995-07-04 | Scientific-Atlanta, Inc. | Optical communications system for transmitting information signals having different wavelengths over a same optical fiber |
SG48871A1 (en) * | 1993-03-31 | 1998-05-18 | British Telecomm | Optical communications |
US5515463A (en) * | 1995-03-10 | 1996-05-07 | Hewlett-Packard Company | Multi-branch microwave line for electro-optical devices |
US6558585B1 (en) * | 2000-11-02 | 2003-05-06 | Pacific Wave Industries, Inc. | Techniques for electrode poling of electro-optic polymers to eliminate poling induced optical loss and poling induced damage to electro-optic chromophores |
US6987488B1 (en) * | 2001-02-16 | 2006-01-17 | The Texas A&M University System | Electromagnetic phase shifter using perturbation controlled by piezoelectric transducer and pha array antenna formed therefrom |
US6711312B1 (en) * | 2002-12-20 | 2004-03-23 | General Electric Company | Integrated optoelectronic circuit and method of fabricating the same |
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2002
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Publication number | Publication date |
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EP1335239B1 (en) | 2005-05-18 |
JP4443932B2 (ja) | 2010-03-31 |
DE60204210T2 (de) | 2005-10-13 |
TW200303657A (en) | 2003-09-01 |
KR20060066569A (ko) | 2006-06-16 |
TWI294223B (en) | 2008-03-01 |
KR100754759B1 (ko) | 2007-09-04 |
HK1075498A1 (en) | 2005-12-16 |
CN1628259A (zh) | 2005-06-15 |
AU2003244490A1 (en) | 2003-09-02 |
WO2003067314A1 (en) | 2003-08-14 |
CN1322357C (zh) | 2007-06-20 |
EP1335239A1 (en) | 2003-08-13 |
DE60204210D1 (de) | 2005-06-23 |
US20050152631A1 (en) | 2005-07-14 |
US7340178B2 (en) | 2008-03-04 |
ATE295971T1 (de) | 2005-06-15 |
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