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Study on Broadband Optical Modulator with Superconducting Transmission Line

Research Project

Project/Area Number 09650017
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

YOSHIDA Keiji  Graduate School of Information Science and Electrical Engineering, Kyushu University, Professor, 大学院・システム情報科学研究科, 教授 (80108670)

Co-Investigator(Kenkyū-buntansha) KANAYA Haruichi  Graduate School of Information Science and Electrical Engineering, Kyushu University, Research Associate, 大学院・システム情報科学研究科, 助手 (40271077)
KISU Takanobu  Graduate School of Information Science and Electrical Engineering, Kyushu University, Associate Professor, 大学院・システム情報科学研究科, 助教授 (00221911)
ENPUKU Keiji  Graduate School of Information Science and Electrical Engineering, Kyushu University, Associate Professor, 大学院・システム情報科学研究科, 助教授 (20150493)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1999: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1998: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1997: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordssuperconductor / optical modulator / microwave-optical device / LiNbO_3
Research Abstract

We have studied a long voltage optical modulator employing high Tc superconducting resonant-type electrodes for use in the sub-carrier optical transmission system in which microwave signals are carried by intensity modulated light-wave. It is shown that microwave modulation of light-wave can be made efficient by using superconducting electrodes with high Q-factor. A preliminary experiment using LiNbOィイD23ィエD2 (LN) optical modulator with YBaィイD22ィエD2CuィイD23ィエD2OィイD2xィエD2 (YBCO) electrode demonstrates dc and microwave modulation of the optical wave.
1. The design of resonant type optical modulators with impedance circuits in presented, and YBCO thin films on MgO substrate were employed as the electrodes. It is shown by numerical calculation that the modulation efficiency increases when high Q superconductors are used as the electrodes.
2. We present a preliminary experiment on the optical modulator, which was realized by flip-chip bonding of LN and MgO substrates. Based on the design and calculation, modulation experiments were carried out at low temperatures. It was demonstrated that the optical modulator with high Tc superconducting electrode by the flip-chip bonding method operated effectively.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] K. Yoshida, et al.: "Modeling of High-Tc Superconducting Transmission Line with Anisotropic Complex Conductivity"TEICE Trans. Electron.. E83-C. 7-14 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H. Kanaya, et al.: "Design and Preparation of Single-Chip HTS Coplanar Waveguide Bandpass Filters"Superconductor Science and Technology. 12. 978-980 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Yoshida, et al.: "A Traveling-Wave-Tpye LiNbO3 Optical Modulator with Superconducting Electrodes"IEEE Trans. Microwaves Theory Tech.. 47. 1201-1205 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Yoshida, et al.: "Design and Performance of a Velocity-Matched Broadband Optical Modulator with Super Conducting Electrodes"IEEE Trans. Appl. Supercond.. 9. 3421-3424 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Yoshida, et al.: "Evaluation of Microwave Complex Conductivity of YBCO Thin Films by Weakly Coupled Gran Model"IEEE Trans. Appl. Supercond.. 9. 2129-2132 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Yoshida, et al.: "Design and Performance of Miniaturized Superconducting Coplanar Waveguid Filters"IEEE Trans. Appl. Supercond.. 9. 3905-3908 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Modeling of High-Tc Superconducting Transmission Lien with Anisotropic Complex Conductivity"IEICE Trans. Eelctron.. vol. E83-C, No. 1. 7-14 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Haruichi Kanaya et al.: "Design and Preparation of Single-Chip HTS Coplanar Waveguide Bandpass Filters"Superconductor Science and Technology. 12. 978-980 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "A Traveling-Wave-Type LiNbO3 Optical Modulator with Superconducting Electrodes"IEEE Trans. Microwave Theory Tech.. Vol. 47. 1201-1205 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Design and Performance of a Velocity-Matched Broadband Optical Modulator with Superconducting Electrodes"IEEE Trans. Appl. Supercond.. vol. 9. 3421-3424 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Evaluation of Microwave Complex Conductivity of YBCO Thin Films by Weakly Coupled Grain Model"IEEE Trans. Appl. Supercond.. vol. 9. 2129-2132 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Design and Performance of Miniaturized Superconducting Coplanar Waveguide Filters"IEEE Trans. Appl. Supercond.. vol. 9. 3905-3908 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Yutaka Kanda, et al: "Design and Performance of LiNbO3 Optical Modulator with a Superconducting Electrode"Jpn. J. Appl. Phys.. vol. 37. 3736-3738 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Evaluation of Microwave Complex Conductivity of YBa2Cu3Ox Thin Films"IEICE Trans. Eelctron.. vol. E81-C. 1565-1572 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] "High Performance LiNbO3 Optical Modulator with a Superconducting Transmission Line"Applied Superconductivity. vol. 3. 299-302 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Yutaka Kanda, et al: "Modeling of Microwave Characteristics of YBa2Cu3Ox Thin Films"Proc. HTSED '97. 74-76 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Residual Surface Resistance of YBa2Cu3Ox Thin Films - Weakly Coupled Grain Model"IEEE Trans. Appl. Supercond.. vol. 7. 1253-1256 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Traveling-Wave Type LiNbO3 Optical Modulator with a Superconducting Coplanar Waveguide Electrode"IEEE Trans. Appl. Supercond.. vol. 7. 3508-3511 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "Design and Performance of Superconducting Miniaturized Coplanar Waveguide Microwave Filters"Proc. ISEC '97. 254-256 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Keiji Yoshida, et al.: "High Speed and Low Voltage LiNbO3 Optical Modulator with a Superconducting Electrode"Proc. Int. Forum Frontier Telecommun. Technol.. M4-1-9. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Yutaka Kanda, et al: "High Performance LiNbO3 Optical Modulator with a Superconducting Transmission Line"Proc. 1997, EUCAS Meet.. 78 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Yoshida,et al.: "Modeling of High-Tc Superconducting Transmission Line with Anisotropic Complex Conductivity"IEICE Trans.Electron.. E83-C. 7-14 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Kanaya,et al.: "Design and Preparation of Single-Chip HTS Coplanar Waveguide Bandpass Filters"Superconductor Science and Technology. 12. 978-980 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yoshida,et al.: "A Traveling-Wave-Type LiNbO3 Optical Modulator with Superconducting Electrodes"IEEE Trans.Microwave Theory Tech.. 47. 1201-1205 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yoshida,et al.: "Design and Preparation of a Velocity-Matched Broadband Optical Modulator With Superconducting Electrodes"IEEE Trans.Appl.Supercond.. 9. 3421-3424 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yoshida,et al.: "Evaluation of Microwave Complex Conductivity of YBCO Thin Films by Weakly Coupled Grain Model"IEEE Trans.Appl.Supercond.. 9. 2129-2132 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yoshida,et al.: "Design and Preparation of Miniaturized Superconducting Coplanar Waveguide Filters"IEEE Trans.Appl.Supercond.. 9. 3905-3908 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yoshida et al.: "Eurluation of Microwave Complec Conductionties of YBa_2Co_3O_x Thin Films" IEICE Trans. Electron. E81-C. 1565-1572 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kouda et al.: "Design and Performance of LiNbO_3 Optical Modulation" Jpn. J. Appl. Phys.37:6B. 3736-3738 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kouda et al/: "High Performance LiNbO_3 Optical Modulator with a Supercsnductiong Transmission Line" Applied Superconductioity 1997. 1. 299-302 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 網頭哲男 他: "高温超伝導薄膜のマイクロ波モデリング" 信学技報. vol.SCE97-6. 31-36 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 甲斐学: "超伝導小型コプレーナ導波路フィルタの開発" 信学技報. Vol.SCE97-7. 37-42 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 吉田啓二: "低温エレクトロニクス技術動向" 電気学会技術報告. Vol.632. 11-15 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kanda et al.: "Modeling of Microwave Characteristics of YBa_2Cu_3Ox Thin Films" Proc.HTSED'97. 74-76 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Yoshida et al.: "Residual Surface Resistance of YBa_2Cu_3Ox Thin Films-weakly Coupled Grain Model" IEEE trans.appl.supercond.Vol.7,No.2. 1253-1256 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Yoshida et al.: "Traveling-Wave Type LiNbO_3 Optical Modulator with a Superconducting Coplanar Waveguide Electrode" IEEE trans.appl.supercond.Vol.7,No.2. 3508-3511 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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