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Study of third-order optical nonlinear devices using semiconductor microcrystals

Research Project

Project/Area Number 06650049
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Applied optics/Quantum optical engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

MIZUMOTO Tetsuya  Tokyo Inst.of Tech., Faculty of Eng., Assoc.Professor, 工学部, 助教授 (00174045)

Co-Investigator(Kenkyū-buntansha) YOKOI Hideki  Tokyo Inst.of Tech., Faculty of Eng., Research Assoc., 工学部, 助手 (90251636)
ANZAI Hiroki  Tokyo Inst.of Tech., Faculty of Eng., Research Assoc., 工学部, 助手 (80212661)
NAITO Yoshiyuki  Tokyo Inst.of Tech., Faculty of Eng., Professor, 工学部, 教授 (70016335)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordsthird-order optical nonlinear effect / semiconductor microcrystal / semiconductor-doped glass / resonant wavelength / photon-electron interaction / optical resonator / optical switch / nonlinear directional coupler / 半導体微粒子 / 光スイッチング
Research Abstract

The purpose of this study is to investigate the enhancement of third-order optical nonlinearity in CdS_xSe_<1-x> doped glass and to demonstrate its effectiveness for constructing optical functional devices. In this study, third-order nonlinear susceptibility observed at a signal wavelength is examined in the CdS_xSe_<1-x> doped glass pumped by light of different wavelength.
We calculated the third-order nonlinear susceptibility using a density matrix method with rotating wave approximation. The distributions of microcrystal size and composition are taken into account in the calculation. It is shown that, comparing to the case of being pumped at the signal wavelength, which is longer that the band gap wavelength, larger intensity dependent refractive index change, typically by a factor of 10^3, is obtained when being pumped at the wavelength close to the band gap. A figure of merit of the material under consideration is discussed considering the nonlinear absorption, which is associated with the imaginary part of nonlinear susceptibility.
The large refractive index change obtained at low absorption wavelength region gives us flexibility in designing a variety of all-optical functional devices. We designed the optical gate switch controlled with pump beam close to band gap and showed its ellectiveness. It is shown that the switching energy can be remarkably reduced. Also, the signal lightwave can be controlled with the pump light of which intensity is lower than that of the signal light.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] G.S.Pu,et al.: "Reduction of critical power in all-optical switching with series-tapered nonlinear directional couplers" IEICE Trans.Electron.E78-C. 1315-1318 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Nakatsuhara,et al.: "Weighted distributed feedback structure for all-optical bistable devices" Applied Optics. (掲載予定). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Emori,et al.: "A novel diagram representing the characteristic of a coupled waveguide" MOC'95 Technical Digest. 200-203 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 中津原克己,他: "導波路形光双安定素子のための重みづけDFB構造" 電子情報通信学会技術研究報告. OPE95-56. 55-60 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Mizumoto,et al,: "Enhanced third-order nonlinear susceptibility of semiconductor doped glass" CLEO Europe 94,Technical Digest. 225-226 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Mizumoto,et al.: "Waveguide optical bistable devices with weighted distributed feedback structure" CLEO Europe 94,Technical Digest. 354-355 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] G.S.Pu, et al.: ""Reduction of critical power in all-optical switching with series-tapered nonlinear directional couplers"" IEICE Trans. Electron.vol.E78-C. 1315-1318 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Nakatsuhara, et al.: ""Weighted distributed feedback structure for all-optical bistable devices"" to be published in Applied Optics. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Emori, et al.: ""A novel diagram representing the characteristic of a coupled waveguide"" 5-th Microoptics Conference Technical Digest. 200-203 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Nakatsuhara, et al.: ""Weighted distributed feedback structure for all-optical bistable waveguide devices"" Technical Report of IEICE. OPE95-56. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Mizumoto, et al.: ""Enhanced third-order nonlinear susceptibility of semiconductor doped glass"" CLEO Europe 94 Technical Digest. 225-226 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Mizumoto, et al.: ""Waveguide optical bistable devices with weighted distributed feedback structure"" CLEO Europe 94 Technical Digest. 354-355 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] G.S.Pu,et al.: "Reduction of critical power in all-optical switching with series-tapered nonlinear directional couplers" IEICE Trans. Electron.E78-C. 1315-1318 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Nakatsuhara,et al.: "Weighted distributed feedback structure for all-optical bistable devices" Applied Optics. (掲載予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Emori,et al.: "A novel diagram representing the characteristic of a coupled waveguide" MOC'95 Technical Digest. 200-203 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 中津原克己,他: "導波路形光双安定素子のための重みづけDFB構造" 電子情報通信学会技術研究報告. OPE95-56. 55-60 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] G.S.Pu,et al.: "Analysis of all-optical switching characteristics of tapered nonlinear directional coupler" IEICE Trans. Electron.E77-C. 1489-1495 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] G.Jin,et al.: "Characteristics of all-optical switching in intersecting waveguide" 5-th Optoelectronics Conference Techincal Digest. 286-287 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] G.S.Pu,et al.: "All-optical switching characteristics of tapered nonlinear directional coupler"" 5-th Optoelectronics Conference Techincal Digest. 14-15 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Mizumoto,et al.: "Enhanced third-order nonlinear susceptibility of semiconductor doped glass" CLEO Europe 94 Technical Digest. 225-226 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Mizumoto,et al.: "Waveguide optical bistable devices with weighted distributed feedback structure" CLEO Europe 94'Technical Digest. 354-355 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 蒲 国勝、他: "グレーティング装荷非線形方向性結合器の光強度依存光スイッチング特性" 電子情報通信学会技術研究報告. OPE94-45. 49-54 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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