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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 7 — Apr. 8, 2013
  • pp: 8701–8710

Generation of wideband chaos with suppressed time-delay signature by delayed self-interference

Anbang Wang, Yibiao Yang, Bingjie Wang, Beibei Zhang, Lei Li, and Yuncai Wang  »View Author Affiliations

Optics Express, Vol. 21, Issue 7, pp. 8701-8710 (2013)

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We demonstrate experimentally and numerically a method using the incoherent delayed self-interference (DSI) of chaotic light from a semiconductor laser with optical feedback to generate wideband chaotic signal. The results show that, the DSI can eliminate the domination of laser relaxation oscillation existing in the chaotic laser light and therefore flatten and widen the power spectrum. Furthermore, the DSI depresses the time-delay signature induced by external cavity modes and improves the symmetry of probability distribution by more than one magnitude. We also experimentally show that this DSI signal is beneficial to the random number generation.

© 2013 OSA

OCIS Codes
(140.1540) Lasers and laser optics : Chaos
(140.5960) Lasers and laser optics : Semiconductor lasers
(260.3160) Physical optics : Interference

ToC Category:
Lasers and Laser Optics

Original Manuscript: December 4, 2012
Revised Manuscript: February 22, 2013
Manuscript Accepted: March 18, 2013
Published: April 2, 2013

Anbang Wang, Yibiao Yang, Bingjie Wang, Beibei Zhang, Lei Li, and Yuncai Wang, "Generation of wideband chaos with suppressed time-delay signature by delayed self-interference," Opt. Express 21, 8701-8710 (2013)

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