Browsing Citations Only by Author "Alsing, Paul"

Now showing items 1-13 of 13

    • Controlling chaos may induce new attractors in an optical device 

      Gavrielides, Athanasios; Alsing, Paul; Kovanis, Vassilios; Erneux, Thomas (Elsevier Science, B.V., 1995-04-01)
      The logistic map has been used to describe period doubling bifurcations for periodically modulated lasers. It also represents an asymptotic approximation of Ikeda's map for a passive ring cavity. Because various control ...

    • Encoding and decoding messages with chaotic lasers 

      Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios; Roy, Rajarshi; Thornburg, K. Scott Jr. (American Physical Society, 1997-12)
      We investigate the structure of the strange attractor of a chaotic loss-modulated solid-state laser utilizing return maps based on a combination of intensity maxima and interspike intervals, as opposed to those utilizing ...

    • History-dependent control of unstable periodic orbits 

      Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios (American Physical Society, 1994-09)
      We present a method of stabilizing unstable periodic orbits in systems whose natural time scales are on the order of or faster than the time it would take for the experimental implementation of the Ott-Grebogi-Yorke (OGY) ...

    • Lang and Kobayashi phase equation 

      Alsing, Paul; Kovanis, Vassilios; Gavrielides, Athanasios; Erneux, Thomas (American Physical Society, 1996-06)
      Lang and Kobayashi equations for a semiconductor laser subject to optical feedback are investigated by using asymptotic methods. Our analysis is based on the values of two key parameters, namely, the small ratio of the ...

    • Lang and Kobayashi phase equation and its validity for low pump 

      Erneux, Thomas; Alsing, Paul; Kovanis, Vassilios; Gavrielides, Athanasios (The International Society for Optical Engineering (SPIE), 1996-05)
      An asymptotic theory of Lang and Kobayashi (LK) equations describing a semiconductor laser subject to optical feedback is investigated in detail. We obtain a simple third order, nonlinear, delay-differential equation for ...

    • Mechanism for period-doubling bifurcation in a semiconductor laser subject to optical injection 

      Erneux, Thomas; Kovanis, Vassilios; Gavrielides, Athanasios; Alsing, Paul (American Physical Society, 1996-06)
      The single-mode rate equations for a semiconductor laser subject to optical injection are investigated analytically. We determine the first branch of periodic solutions for low values of the injection field. For larger ...

    • Period-doubling cascades and chaos in a semiconductor laser with optical injection 

      Simpson, Thomas; Liu, Jia-Ming; Gavrielides, Athanasios; Kovanis, Vassilios; Alsing, Paul (American Physical Society, 1995-05)
      We characterize the nonlinear dynamics of a semiconductor laser subject to optical injection. The key characteristics of measured optical spectra are reproduced in calculations based on a single-mode model that includes ...

    • Period-doubling route to chaos in a semiconductor laser subject to optical injection 

      Simpson, Thomas; Liu, Jia-Ming; Gavrielides, Athanasios; Kovanis, Vassilios; Alsing, Paul (American Institute of Physics, 1994-06-27)
      Experimental measurements and a single-mode analysis of a quantum-well laser diode subject to strong optical injection are combined to demonstrate that the diode follows a period-doubling route to chaos. All laser parameters ...

    • Subharmonic transition in an optically injected semiconductor laser: theory and experiments 

      Gavrielides, Athanasios; Erneux, Thomas; Kovanis, Vassilios; Alsing, Paul; Simpson, Thomas (Institute of Physics, 1997-08)
      The equations for a semiconductor laser subject to detuned optical injection are analysed using asymptotic methods. We derive a third-order equation for the phase of the laser field which is then investigated for small ...

    • Synchronization and control in a unidirectionally coupled array of chaotic diode resonators 

      Mozdy, Eric; Newell, Timothy; Alsing, Paul; Kovanis, Vassilios; Gavrielides, Athanasios (American Physical Society, 1995-06)
      We experimentally investigate the synchronization of a one dimensional array of unidirectionally coupled chaotic diode resonators. Though care is taken to match diode elements as closely as possible, slight differences in ...

    • Synchronization of chaotic diode resonators by occasional proportional feedback 

      Newell, Timothy; Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios (American Physical Society, 1994-03-14)
      Synchronization of a pair of chaotic diode resonators has been experimentally achieved by applying a minute feedback signal to the amplitude of the drive voltage of a slave resonator. The signal is proportional to the ...

    • Synchronization of chaotic resonators based on control theory 

      Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios (American Physical Society, 1995-04)
      We have investigated experimentally and computationally a synchronization scheme, based on control theory, for the case of two nearly identical chaotic diode resonators. From the experimentally captured time series we ...

    • Using neural networks for controlling chaos 

      Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios (The International Society for Optical Engineering (SPIE), 1994-03)
      A feed-forward backpropagating neural network is trained to achieve and maintain control of the unstable periodic orbits embedded in a chaotic attractor. The controlling algorithms used for training the network are based ...