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

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.

VARGHESE BEJOY¹ JOHN MANU P² NANDAKUMARAN V M^{1 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

Published

16 May 2016

Manuscript received

23 February 2015

Manuscript revised

20 May 2015

Accepted

1 June 2015

Early published

15 February 2016