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往復逓倍変調を利用した波長多重光無線信号一括発生技術に関する研究

Research Project

Project/Area Number 17686032
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Electron device/Electronic equipment
Research InstitutionNational Institute of Information and Communications Technology

Principal Investigator

川西 哲也  National Institute of Information and Communications Technology, 第一研究部門・新世代ネットワーク研究センター・光波量子・ミリ波ICTグループ, 研究マネージャー (40359063)

Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥30,680,000 (Direct Cost: ¥23,600,000、Indirect Cost: ¥7,080,000)
Fiscal Year 2007: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2006: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Fiscal Year 2005: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Keywords光変調 / ミリ波 / マイクロ波 / 光ファイバ / 光調 / 多重
Research Abstract

本研究では一つのデバイスで複数のファイバ無線信号の一括生成を可能とする光変調技術の実現を目指している。光の往復を利用し,高速信号発生を可能とする往復逓倍変調器を利用する。往復逓倍変調器は2つの光フィルタと1つの光位相変調器から構成され,所定の無線信号周波数と入力光波長の組み合わせに対して高効率で動作する。これにより,光位相変調器部分に印加する電気信号よりも遙かに高速の成分を持つ光変調信号の発生が可能となる。これまでに400GHzを超える超高速信号発生に成功している。この往復逓倍変調器を含め,これまでの光信号発生では,複数の信号を発生させる場合には,それぞれに変調デバイスを準備する必要があり,波長多重で容量拡大する場合に,送信機が複雑になるという問題があった。これに対し,多波長成分の入力に対しては光フィルタが複数の反射帯域,透過帯域をもつものとすることで,一括信号生成が可能とする,新たな方式を検討する。各反射帯域がそれぞれ異なる反射点をもつようにすることで,波長成分ごとに異なる周波数の無線信号での変調が実現でき,非常にシンプルな構成で,各波長成分をそれぞれ別の無線信号で同時に変調することが可能となる。今年度は,数チャネルで一括信号発生可能な往復逓倍変調器の変調効率向上を図るために,光増幅機能をもった導波路構造に関する研究を進めた。エルビウムを添加することにより変調器内部での光損失を補償する原理の確認については昨年度完了しているが,今年度,往復逓倍変調器に適用し,ファイバ無線信号の発生効率の向上を達成した。さらに,複数チャネル同時変調の実証実験を行い,多数のチャネルで同時変調が可能であることを確認した。

Report

(3 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (74 results)

All 2008 2007 2006 2005 Other

All Journal Article (29 results) (of which Peer Reviewed: 7 results) Presentation (40 results) Remarks (1 results) Patent(Industrial Property Rights) (4 results) (of which Overseas: 2 results)

  • [Journal Article] Er添加LiNbO3結晶Ti拡散導波路の光増輻特性と往復逓倍光変調への応用2008

    • Author(s)
      古河 原壮
    • Journal Title

      電子情報通信学会論文誌C Vol.J91-C,No.1

      Pages: 119-127

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reciprocation Optical Modulation On Erbium-Doped LiNbO3 for Harmon ic Generation2007

    • Author(s)
      S. Kogahara
    • Journal Title

      IEEE Photonics Technology Letters vol.19,No.19

      Pages: 1565-1567

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High Extinction Ratio MachZehnder Modulator Applied to a Highly Stable Optical Signal Generator2007

    • Author(s)
      H. Kiuchi
    • Journal Title

      IEEE Transactions On Microwave Theory and Techniques Vol.55,No.9

      Pages: 1964-1972

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optoelectronic Oscillating Millimetre-wave generator Employing Reciprocating Optical Modulator2007

    • Author(s)
      T. Sakamoto
    • Journal Title

      Electron.Lett vol.43,no.19

      Pages: 1031-1033

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Widely Wavelength-Tunable Ultra-Flat Frequency Comb Generation Using Conventional Dual-Draive Mach-Zehnder Modulator2007

    • Author(s)
      T. Sakamoto
    • Journal Title

      Electron.Lett vol.43,no.19

      Pages: 1039-1040

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A 10-GHz Resonant-Type LiNbO3 0ptical Modulator Array2007

    • Author(s)
      S. Shinada
    • Journal Title

      IEEE PHOTONICS TECHNOLOGY LETTERS Vol.19,No.10

      Pages: 735-737

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Asymptotic Formalism for Ultra-Flat Optical Frequency Comb Generation Using MachZehnder Modulator2007

    • Author(s)
      T. Sakamoto
    • Journal Title

      Optics Lett.vol.32 Issue 11

      Pages: 1515-1517

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low temperature Au to Au bonding for LINb03/ Si structure achieved in ambient air2007

    • Author(s)
      R.Takigawa
    • Journal Title

      IEICE Trans. Electron Vol. E90-C, No. 1

      Pages: 145-14

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Optical amplification characteristics of Ti-diffused waveguides on Erbium-doped LiNb03 crystal2007

    • Author(s)
      S.Kogahara
    • Journal Title

      IEICE Electronics Express. Vol. 4. NO. 4

      Pages: 134-13

    • Related Report
      2006 Annual Research Report
  • [Journal Article] High-Speed Control of Lightwave Amplitude, Phase, Nd Frequency by Use of Electrooptic Effect (Invited Paper)2007

    • Author(s)
      T.Kawanishi
    • Journal Title

      IEEE Journal of Selected Topics in Quantum Electronics Vol. 13, No. 1

      Pages: 79-91

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 10-Gb/s External Modulation in Optical CPFSK Format.2006

    • Author(s)
      T.Sakamoto
    • Journal Title

      IEEE Photon. Tech. Lett. vol. 18, no. 8

      Pages: 968-970

    • Related Report
      2006 Annual Research Report
  • [Journal Article] High-speed optical DQPSK and FSK modulation using integrated Mach-Zehnder interferometers.2006

    • Author(s)
      T.Kawanishi
    • Journal Title

      Optics Express. 14

      Pages: 4469-4478

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A bias condition monitor technique for the nested Mach-Zehnder modulator.2006

    • Author(s)
      K.Higuma
    • Journal Title

      IEICE Electron. Express. Vol. 3, No. 11

      Pages: 238-242

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Continuous-Phase Frequency-Shift Keying with External Modulation2006

    • Author(s)
      T.Sakamoto
    • Journal Title

      IEEE J. Selected Topics in Quantum Electron. vol. 12, 4

      Pages: 585-595

    • Related Report
      2006 Annual Research Report
  • [Journal Article] High-Speed Optical Modulators and Photonic Sideband Management (Invited)2006

    • Author(s)
      T.Kawanishi
    • Journal Title

      International Journal of Microwave and Optical Technology 1

      Pages: 114-120

    • Related Report
      2006 Annual Research Report
  • [Journal Article] An Optical Grating Filter Dry-etched on a LiNb03 Substrate2006

    • Author(s)
      S.Shinada
    • Journal Title

      IEICE Express Letter vol. 3, no. 14

      Pages: 347-352

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Fast optical frequency sweep for ultra line real-time spectral domain measurement2006

    • Author(s)
      T.Kawanishi
    • Journal Title

      IEE, Electron. Lett. vol. 42, no. 17

      Pages: 999-1000

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Optical filter characterization by using optical frequency sweep technique with a single sideband modulator2006

    • Author(s)
      川西 哲也
    • Journal Title

      IEICE Electron.Express Vol.3

      Pages: 34-38

    • NAID

      130000088308

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Amplitude modulation on millimeter-wave signal with low driving voltage using reciprocating optical modulator2005

    • Author(s)
      坂本 高秀
    • Journal Title

      IEICE Electronics Express Vol.2 No.7

      Pages: 239-243

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Pulse-carving technique for suppressing transient state in external wideband FSK modulation2005

    • Author(s)
      坂本 高秀
    • Journal Title

      IEICE Electronics Express Vol.2 No.7

      Pages: 244-248

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Optical FSK transmission with group delay compensated balance detection2005

    • Author(s)
      川西 哲也
    • Journal Title

      IEICE ELEX Vol.2 No.11

      Pages: 333-337

    • NAID

      130000088151

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Optoelectronic Oscillator Using LiNbO3 Intensity Modulator with Resonant Electrode2005

    • Author(s)
      坂本 高秀
    • Journal Title

      ELECTRONICS LETTERS Vol.41 No.12

      Pages: 716-717

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ultrafast all-optical switching by cross-absorption modulation in silicon wire waveguides2005

    • Author(s)
      Liang Tak-Keung
    • Journal Title

      Optics Express Vol.13 No.19

      Pages: 7298-7303

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Optical minimum-shift keying with external modulation scheme2005

    • Author(s)
      坂本 高秀
    • Journal Title

      OPTICS EXPRE Vol.13 No.20

      Pages: 7741-7747

    • Related Report
      2005 Annual Research Report
  • [Journal Article] All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying2005

    • Author(s)
      川西 哲也
    • Journal Title

      OPTICS EXPRESS Vol.13 No.20

      Pages: 8038-8044

    • Related Report
      2005 Annual Research Report
  • [Journal Article] High Carrier Suppression Double Sideband Modulation Using an Integrated LiNbO3 Optical modulators for photonic local oscillators (An alternative scheme of Laser Synthesizer)2005

    • Author(s)
      川西 哲也
    • Journal Title

      ALMA memo No.540

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Low temperature bonding of LiNbO3 waveguide chip to Si substrate in air2005

    • Author(s)
      多岐川 良
    • Journal Title

      Proceedings of SPIE Vol.6050 No.605012

      Pages: 1-6

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Optical minimum-shift keying with external modulation scheme2005

    • Author(s)
      坂本 高秀
    • Journal Title

      Optics Express Vol.13

      Pages: 7741-7747

    • Related Report
      2005 Annual Research Report
  • [Journal Article] All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying2005

    • Author(s)
      川西 哲也
    • Journal Title

      Optics Express. Vol.13

      Pages: 8038-8044

    • Related Report
      2005 Annual Research Report
  • [Presentation] Photonic Millimeter-wave Generation and Distribution System Applicable the ALMA Radio Telescopes (Invited)2008

    • Author(s)
      H. Kiuchi
    • Organizer
      PIERS 2008
    • Place of Presentation
      Hangzhou,China
    • Related Report
      2007 Annual Research Report
  • [Presentation] 光FSK変調器による超高消光比変調の動作解析2007

    • Author(s)
      川西 哲也
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      九州工業大学、福岡
    • Year and Date
      2007-11-02
    • Related Report
      2007 Annual Research Report
  • [Presentation] 光ベクトル変調のための複素デジタルーアナログ変換器2007

    • Author(s)
      坂本 高秀
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      九州工業大学、福岡
    • Year and Date
      2007-11-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高速光QAM信号発生と信号品質評価方法の検討2007

    • Author(s)
      千葉 明人
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      九州工業大学、福岡
    • Year and Date
      2007-11-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] Electro-Optic Ultra-Flat Comb Generation Using Mach-Zehnder Modulator in Push-Pull Operation Mode2007

    • Author(s)
      T. Sakamoto
    • Organizer
      LEOS Annual Meeting 2007
    • Place of Presentation
      Florida,U.S.A
    • Year and Date
      2007-10-25
    • Related Report
      2007 Annual Research Report
  • [Presentation] Performance improvement of high-extinction-ratio LiNbO3 optical intensity modulator by means of polarization crosstalk reduction2007

    • Author(s)
      H. Toda
    • Organizer
      MWP 2007
    • Place of Presentation
      Victoria,Canada
    • Year and Date
      2007-10-04
    • Related Report
      2007 Annual Research Report
  • [Presentation] Ultra Wideband LightSource Using 136-Wavelengths SSB Frequency Sweep Technique for Optical Coherence Tomography2007

    • Author(s)
      T. Yamamoto
    • Organizer
      MWP 2007
    • Place of Presentation
      Victoria,Canada
    • Year and Date
      2007-10-04
    • Related Report
      2007 Annual Research Report
  • [Presentation] Sideband generation using electro-optic modulation for micro-and millimeter-wave photonics2007

    • Author(s)
      T. Kawanishi
    • Organizer
      MWP 2007
    • Place of Presentation
      Victoria,Canada
    • Year and Date
      2007-10-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] Optimization of Electro-Optic Cumb Generation Using Conventional Mach-Zehnder modulator2007

    • Author(s)
      T. Sakamoto
    • Organizer
      MWP 2007
    • Place of Presentation
      Victoria,Canada
    • Year and Date
      2007-10-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] Study of precise optical modulation using Mach-Zehnder interferometers for advanced modulation formats2007

    • Author(s)
      T. Kawanishi
    • Organizer
      ECOC 2007
    • Place of Presentation
      Berlin,Germany
    • Year and Date
      2007-09-19
    • Related Report
      2007 Annual Research Report
  • [Presentation] 50-Gb/s16 QAM by a quad-parallel Mach-Zehnder modulator2007

    • Author(s)
      T. Sakamoto
    • Organizer
      ECOC 2007
    • Place of Presentation
      Berlin,Germany
    • Year and Date
      2007-09-19
    • Related Report
      2007 Annual Research Report
  • [Presentation] Multi-Frequency Heterodyne System for AH-Optical-Technology-Free Ultrafast Optical Waveform Measurement2007

    • Author(s)
      T. Sakamoto
    • Organizer
      ECOC 2007
    • Place of Presentation
      Berlin,Germany
    • Year and Date
      2007-09-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] 光SSB周波数掃引を用いたOCT用高速広帯域光源の検討2007

    • Author(s)
      山本 剛裕
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高位相安定フォトニック・ミリメータ波発生とALMA電波干渉計への応用2007

    • Author(s)
      木内 等
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] マハツェンダ型平坦光コム発生器を用いたピコ秒パルス列生成2007

    • Author(s)
      坂本 高秀
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] ミリ波、テラヘルツ波発生のためのマハツェンダ変調器型光コム発生源2007

    • Author(s)
      坂本 高秀
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] LiNbO3共振電極光変調器の微少チャープパラメータ測定2007

    • Author(s)
      榎原 晃
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] 2.0-Gbaund,16値光直交振幅変調2007

    • Author(s)
      千葉 明人
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高消光比LiNbO3光強度変調器の偏光クロストーク抑圧による特性改善-DSB-SC変調特性-2007

    • Author(s)
      戸田 裕之
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] 広帯域ベクトル型変調器の周波数特性2007

    • Author(s)
      日隈 薫
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      鳥取大学、鳥取
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] Silicon based photonic network devices and materials (Invited)2007

    • Author(s)
      N. Yamamoto
    • Organizer
      Optics East 2007
    • Place of Presentation
      Boston,U.S.A
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] High-speed versatile optical modulator based on integrated LiNbO3 wave guides (Inveited)2007

    • Author(s)
      T. Kawanishi
    • Organizer
      Optics East 2007
    • Place of Presentation
      Boston,U.S.A
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] High-speed Optical DQPSK modulator2007

    • Author(s)
      T. Kawanishi
    • Organizer
      PTC 2007
    • Place of Presentation
      Gwangju,Korea
    • Year and Date
      2007-09-05
    • Related Report
      2007 Annual Research Report
  • [Presentation] マハツェンダ型変調器の非対称プッシュプル駆動による超平坦コム発生2007

    • Author(s)
      坂本 高秀
    • Organizer
      第68回応用物理学会学術講演会
    • Place of Presentation
      北海道工業大学、北海道
    • Year and Date
      2007-09-04
    • Related Report
      2007 Annual Research Report
  • [Presentation] 光強度のトリミング機構によるマッハツェンダー型LiNbO3光スイッチの高消光比化2007

    • Author(s)
      千葉 明人
    • Organizer
      第68回応用物理学会学術講演会
    • Place of Presentation
      北海道工業大学、北海道
    • Year and Date
      2007-09-04
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高安定光変調器の電波干渉計用光ローカル発信器への応用2007

    • Author(s)
      木内 等
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      室蘭工業大学、北海道
    • Year and Date
      2007-08-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高消光比変調器を用いた光ミリ波発生用光源の試作2007

    • Author(s)
      坂井 猛
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      室蘭工業大学、北海道
    • Year and Date
      2007-08-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高消光比LiNbO3光強度変調器の偏光クロストーク抑圧による特性改善2007

    • Author(s)
      戸田 裕之
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      室蘭工業大学、北海道
    • Year and Date
      2007-08-02
    • Related Report
      2007 Annual Research Report
  • [Presentation] Super-Stable Optical Comb and Pulse Generation Using Electro-Optic Modulation (Invited)2007

    • Author(s)
      T. Sakamoto
    • Organizer
      IEEE-LEOS Summer Topicals 2007
    • Place of Presentation
      Portland,U.S.A
    • Year and Date
      2007-07-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Agile Wideband Light Source for Optical Coherence Tomography Using Optical SSB Frequency Sweep Technique2007

    • Author(s)
      T. Yamamoto
    • Organizer
      IEEE-LEOS Summer Topicals 2007
    • Place of Presentation
      Portland,U.S.A
    • Year and Date
      2007-07-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Ultra fast optical frequency sweep with an integrated lithium niobate modulator2007

    • Author(s)
      T. Kawanishi
    • Organizer
      OECC/IOOC 2007
    • Place of Presentation
      Yokohama,Japan
    • Year and Date
      2007-07-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] High-speed lithium niobate modulator and its application to huge capacity transnussion system2007

    • Author(s)
      T. Kawanishi
    • Organizer
      OECC/IOOC 2007
    • Place of Presentation
      Yokohama,Japan
    • Year and Date
      2007-07-09
    • Related Report
      2007 Annual Research Report
  • [Presentation] 50-nm Wavelength Tunable Ultra-Flat Comb Generation Using Single-Stage MachZehnder Modulation2007

    • Author(s)
      T. Sakamoto
    • Organizer
      OECC/IOOC 2007
    • Place of Presentation
      Yokohama,Japan
    • Year and Date
      2007-07-07
    • Related Report
      2007 Annual Research Report
  • [Presentation] Advanced Optical Modulation Techniques for Ultra-High Capacity Trans mission2007

    • Author(s)
      T. Kawanishi
    • Organizer
      2007 Japan-Italy Bilateral Workshop on Photonics for Communicaiton
    • Place of Presentation
      Osaka,Japan
    • Year and Date
      2007-07-05
    • Related Report
      2007 Annual Research Report
  • [Presentation] OFC/NFOEC2007報告〜アクティブモジュール/デバイス関連〜(招待講演)2007

    • Author(s)
      川西 哲也
    • Organizer
      電子情報通信学会光エレクトロニクス研究会
    • Place of Presentation
      機械振興会館、東京
    • Year and Date
      2007-05-25
    • Related Report
      2007 Annual Research Report
  • [Presentation] Reciprocating optical modulation on Erbium doped LiNbO3 for harmonico generarion2007

    • Author(s)
      S. Kogahara
    • Organizer
      CLEO 2007
    • Place of Presentation
      Baltimore,U.S.A
    • Year and Date
      2007-05-09
    • Related Report
      2007 Annual Research Report
  • [Presentation] Advanced LiNbO3 modulation(Invited)2007

    • Author(s)
      T. Kawanishi
    • Organizer
      CLEO 2007
    • Place of Presentation
      Baltimore,U.S.A
    • Year and Date
      2007-05-07
    • Related Report
      2007 Annual Research Report
  • [Presentation] Advanced Lightwave modulation techniques for rmicro-and millimeter-wave photonics(Invited)2007

    • Author(s)
      T. Kawanishi
    • Organizer
      AP-MWP 2007
    • Place of Presentation
      Jeju Island,Korea
    • Year and Date
      2007-04-25
    • Related Report
      2007 Annual Research Report
  • [Presentation] Photonic Millimeter-wave generation Developments for the ALMA Radio Telescope(Invited)2007

    • Author(s)
      H. Kiuchi
    • Organizer
      LEOS Annual Meeting 2007
    • Place of Presentation
      Florida,U.S.A
    • Related Report
      2007 Annual Research Report
  • [Presentation] Optical Modulators For 100GbE(Invited)2007

    • Author(s)
      T. Kawanishi
    • Organizer
      LEOS Annual Meeting 2007
    • Place of Presentation
      Florida,U.S.A
    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://www2.nict.go.jp/w/w113/lwd/staff/kawanishi/index.html

    • Related Report
      2007 Annual Research Report
  • [Patent(Industrial Property Rights)] 複数マッハツェンダー干渉計を有する光変調器の特性評価方法2008

    • Inventor(s)
      川西 哲也 中島 慎也 品田 聡
    • Industrial Property Rights Holder
      (独)情報通信研究機構
    • Filing Date
      2008-03-13
    • Related Report
      2007 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 高精度マッハツェンダー干渉計を有する光変調器の特性評価方法2008

    • Inventor(s)
      川西 哲也 中島 慎也 品田 聡
    • Industrial Property Rights Holder
      (独)情報通信研究機構
    • Filing Date
      2008-03-07
    • Related Report
      2007 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 直交振幅変調信号発生装置 (マッハツェンダ変調器のバイアス調整方法)2007

    • Inventor(s)
      川西 哲也 坂本 高秀 千葉 明人 土屋 昌弘
    • Industrial Property Rights Holder
      (独)情報通信研究機構
    • Industrial Property Number
      2007-240478
    • Filing Date
      2007-09-18
    • Related Report
      2007 Annual Research Report
  • [Patent(Industrial Property Rights)] 往復逓倍光変調器2005

    • Inventor(s)
      川西 哲也, 坂本 高秀, 土屋 昌弘
    • Industrial Property Rights Holder
      情報通信研究機構
    • Industrial Property Number
      2005-232640
    • Filing Date
      2005-08-08
    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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