• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Stochastic resonance in optical bistable systems

Research Project

Project/Area Number 09440154
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 物理学一般
Research InstitutionKobe University

Principal Investigator

KOHMOTO Toshiro  Kobe Univ., Faculty of Science, Assist. Professor, 理学部, 助教授 (70192573)

Co-Investigator(Kenkyū-buntansha) KUNITOMO Masakazu  Kobe Univ., Faculty of Science, Assist. Professor, 理学部, 教授 (40031348)
FUKUDA Yukio  Kobe Univ., Faculty of Science, Professor, 理学部, 教授 (40025482)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 1999: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1998: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1997: ¥7,500,000 (Direct Cost: ¥7,500,000)
Keywordsstochastic resonance / optical bistability / noise light / 雑音光 / スペクトル解析
Research Abstract

Stochastic resonance(SR) is a cooperative phenomenon that the output signal-to-noise ratio(SNR) is enhanced by adding random noise to the input coherent signal. In spite of its strange appearance, it occurs in various systems. In view of the ability of controlling SNR by adding noise, it is expected to be applied to signal processing, especially to optical signal processing.
(1)SR experiments in hybrid optical bistable systems were performed for a sinusoidal input signal. The experimental results show that, with smaller noise correlation time, the peak value of the SNR is larger, the width of the resonance is narrower, and the noise intensity which gives the peak SNR is smaller.
(2)Numerical simulations were performed using a simple model (a Langevin equations for an overdamped system with a bistable potential). The simulation results reproduced well the experimental results.
(3)SR for a binary input signal was studied by numerical simulations. It was found that the output signal has a gain of information, and that the noise with a small correlation time is favorable for SR and for the gain.
(4)The behavior of SR for image data was simulated. The simulation results show that this system can improve the visibility of images and can be a powerful tool for signal processing.

Report

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

    (24 results)

All Other

All Publications (24 results)

  • [Publications] M. Misono: "Stochastic resonance in an optical bistable system driven by colored noise"Opt. Commun.. 152. 255-258 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Misono: "Correlation spectroscopy with noise light excitation"Phys. Lett. A. 240. 29-36 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Misono: "Noise-color dependence of stochastic resonance signals in a hybrid optical bistable system"J. Phys. Soc. Jpn. 67. 2162-2165 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Misono: "Noise-enhanced transmission of information in a bistable system"Phys. Rev. E. 58. 5602-5607 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kohmoto: "Correlation spectroscopy with excitation by noise light : Excited-state signals in Rb atoms"Phys. Lett. A. 258. 291-296 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Misono: "Improvement of transmission characteristics by stochastic resonance"Proc. CRL Int. Symp.. 209-210 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Misono: "Stochastic resonance in an optical bistable system driven by colored noise"Opt. Commun. 152. 255-258 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Misono: "Correlation spectroscopy with noise light excitation"Phys. Lett. A. 240. 29-36 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Misono: "Noise-color dependence of stochastic resonance signals in a hybrid optical bistable system"J. Phys. Soc. Jpn. 67. 2162-2165 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Misono: "Noise-enhanced transmission of information in a bistable system"Phys. Rev. E. 58. 5602-5607 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Kohmoto: "Correlation spectroscopy with excitation by noise light : Excited-state signals in Rb atoms"Phys. Lett. A. 258. 291-296 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Misono: "Improvement of transmission characteristics by stochastic resonance"Proc. CRL Int. Symp.. 209-210 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Misono: "Stochastic Resonance in an Optical Bistable System Priven by Colored Noise"Opt.Commun.. 152. 255-258 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Misono: "Correlation spectroscopy with noise light excitation"Phys.Lett.A. 240. 29-36 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Misono: "Noise-color dependence of stochastic resonance signals in a hybrid optical bistable system"J.Phys.Soc.Jpn.. 67・7. 2162-2165 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Misono: "Noise-enhanced transmission of information in a bistable system"Phys.Rev.E. 58・5A. 5602-5607 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Kohmoto: "Correlation spectroscopy with excitation by noise light: Excited-state signals in Rb atoms"Phys.Lett.A. 258. 291-296 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Misono: "Improvement of transmission characteristics by stochastic resonance"Proc.CRL Int.Symp.. 209-210 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Misono: "Stochastic Rescnance in an Optical Bistable System Driven by Colored Noise" Opt.Commun.152. 255-258 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Misono: "Noise-Color Dependence of Stochastic Resonance Signals in a Hybrid Optical Bistable System" J.Phys.Soc.Jpn.67・7. 2162-2165 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Kohmoto: "Echo Modulation in Nuclear Multilevel Systems" Phys.Lett.A. 245. 317-328 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Misono: "Noese-Enhanced Transmission of Information in a Bistable System" Phys.Rev.E. 58・5A. 5602-5607 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Kohmoto: "Nuclear Magnetic Relaxation in an Ising-like Antiferromagnet CsCol_3 : Domain-Wall Dynamics" Phys.Rev.B. 57・5. 2936-2942 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Misono: "Correlation Spectroscopy with Noise Light Excitation" Phys.Lett.A. 240・1/2. 29-36 (1998)

    • Related Report
      1997 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi