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Proceedings Article

Experimental study of the complex dynamics of semiconductor lasers with feedback via symbolic time-series analysis

[+] Author Affiliations
Taciano Sorrentino, Andrés Aragoneses, Sandro Perrone, M. C. Torrent, Cristina Masoller

Univ. Politècnica de Catalunya (Spain)

Daniel J. Gauthier

Duke Univ. (United States)

Proc. SPIE 9134, Semiconductor Lasers and Laser Dynamics VI, 91340L (May 2, 2014); doi:10.1117/12.2052322
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From Conference Volume 9134

  • Semiconductor Lasers and Laser Dynamics VI
  • Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik
  • Brussels, Belgium | April 14, 2014

abstract

We investigate the symbolic dynamics of an excitable optical system under periodic forcing. Particularly, we consider the low-frequency fluctuation (LFF) dynamics of a semiconductor laser with periodically-modulated injection current and optical feedback. We use a method of symbolic time-series analysis that allows us to unveil serial correlations in the sequence of intensity dropouts. By transforming the sequence of inter-dropout intervals into a sequence of ordinal patterns and analyzing the statistics of the patterns, we uncover correlations among several consecutive dropouts and we identify definite changes in the dynamics as the modulation amplitude increases. We confirm the robustness of the observations by conducting the experiments with two different lasers under different feedback conditions. The results are also shown to be robust to variations of the threshold used for detecting the dropouts. Simulations of the Lang-Kobayashi (LK) model, including spontaneous emission noise, are found to be in good qualitative agreement with the observations, providing an interpretation of the correlations present in the dropout sequence as due to the interplay of the underlying attractor topology, the periodic forcing, and the noise that sustains the dropout events. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Taciano Sorrentino ; Andrés Aragoneses ; Sandro Perrone ; Daniel J. Gauthier ; M. C. Torrent, et al.
" Experimental study of the complex dynamics of semiconductor lasers with feedback via symbolic time-series analysis ", Proc. SPIE 9134, Semiconductor Lasers and Laser Dynamics VI, 91340L (May 2, 2014); doi:10.1117/12.2052322; http://dx.doi.org/10.1117/12.2052322


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