第35回 IEEE Kansai Section技術講演会

  • 日時
    • 2006年11月8日（水）
  • 場所
    • NTT コミュニケーション科学基礎研究所 NTT京阪奈ビル３階　大会議室
  • プログラム
    • 2006年11月8日（水）15:00～16:30
      • Chaotic yet consistent? - Synchronization of driven nonlinear systems -
        Prof. Rajarshi Roy (Department of Physics, University of Maryland, USA)
  • 講演概要
    • Dynamical systems respond to external signals in several different ways.
      We explore experimentally how complex waveforms (chaotic or noisy) with different characteristics generate responses in driven nonlinear optical systems. We look first at generalized synchronization, when the system is driven by a chaotic waveform recorded from the system itself.
      We then enlarge the set of drive signals to include noisy waveforms.
      The notion of "consistency" describes how a system may respond to either type of repetitive driving, starting from different initial conditions.
      Numerical simulations of mathematical models of the optical systems reveal the role of internal noise, dynamical instabilities as well as the influence of drive waveform design on the consistency of response. We point out possible applications of these ideas to dynamical non-destructive testing of structures and devices - biological, mechanical, electronic and optical.
  • 講演者略歴
    • He received his Ph. D. in Physics at the University of Rochester in 1981.
      Since 1999, he is a Professor, Department of Physics, Institute of Physical Science and Technology and Institute for Research in Electronics and Applied Physics, University of Maryland.
      His current fields of interest is Quantum Electronics/optics, noise and nonlinear dynamics in optical systems, laser physics, semiconductor and solid state lasers, fiber and integrated optics, optical bistability, control of spatio-temporal systems, experimental statistical physics.
      He is a Fellow of the Optical Society of America and a Fellow of the American Physical Society.