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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 20 — Oct. 15, 2007
  • pp: 2960–2962

Loss of time-delay signature in the chaotic output of a semiconductor laser with optical feedback

D. Rontani, A. Locquet, M. Sciamanna, and D. S. Citrin  »View Author Affiliations

Optics Letters, Vol. 32, Issue 20, pp. 2960-2962 (2007)

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We investigate theoretically the possibility of retrieving the value of the time delay of a semiconductor laser with an external optical feedback from the analysis of its intensity time series. When the feedback rate is moderate and the injection current set such that the laser relaxation-oscillation period is close to the delay, then the time-delay identification becomes extremely difficult, thus improving the security of chaos-based communications using external-cavity lasers.

© 2007 Optical Society of America

OCIS Codes
(140.1540) Lasers and laser optics : Chaos
(190.3100) Nonlinear optics : Instabilities and chaos

ToC Category:
Nonlinear Optics

Original Manuscript: July 17, 2007
Revised Manuscript: September 5, 2007
Manuscript Accepted: September 6, 2007
Published: October 5, 2007

D. Rontani, A. Locquet, M. Sciamanna, and D. S. Citrin, "Loss of time-delay signature in the chaotic output of a semiconductor laser with optical feedback," Opt. Lett. 32, 2960-2962 (2007)

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