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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/086/05/1021-1030

    • Keywords

       

      Quantum dot laser; delay; information entropy; statistical complexity; mutual information.

    • Abstract

       

      Delay identification from the chaotic intensity output of a quantum dot laser with optical feedback is done using numerical and information theoretic techniques. Four quantifiers, namely autocorrelation function, delayed mutual information, permutation entropy and permutation statistical complexity, are employed in delay estimation. A detailed comparison of these quantifiers with different feedback rates and delay is undertaken. Permutation entropy and permutation statistical complexity are calculated with different dimensions of symbolic reconstruction to obtain the best results.

    • Author Affiliations

       

      VARGHESE BEJOY1 JOHN MANU P2 NANDAKUMARAN V M1 3

      1. International School of Photonics, Cochin University of Science and Technology, Kochi 682 022, India
      2. Department of Physics, Union Christian College, Aluva 683 102, India
      3. Department of Physics, Amrita School of Arts and Sciences, Amrita Viswa Vidyapeetham, Kollam 690 525, India

    • Dates

       
      Published
      16 May 2016
      Manuscript received
      23 February 2015
      Manuscript revised
      20 May 2015
      Accepted
      1 June 2015
      Early published
      15 February 2016

  • Pramana – Journal of Physics | News

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