Nonlinear Laser Dynamics with Suppressed Time-Delay Signatures by FBGs

DOI

Abstract

Chaotic dynamics in a single-mode semiconductor laser subject to optical feedback from fiber Bragg gratings (FBGs) is investigated. Obtained from the inverse Fourier transform on the magnitude of the optical spectra, the coherence function evaluates the suppression of the time-delay information. The intensity autocorrelation function time-delay signature (ACF-TDS) and coherence function time-delay signature (CF-TDS) are found to be sensitive to the FBG bandwidth. The FBG feedback with proper bandwidth and positive detuning frequency can achieve both ACF-TDS concealment and CF-TDS minimization in chaotic oscillation. Moreover, the TDS-optimized chaos can be generally obtained over a range of feedback delay times. Besides, comparing to conventional mirror feedback, the FBG feedback suppresses the ACF-TDS by more than an order of magnitude in the experiments.

Journal

  • IEICE Proceeding Series

    IEICE Proceeding Series 47 45-48, 2015-12-01

    The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

  • CRID
    1390001277360337280
  • NII Article ID
    230000009055
  • DOI
    10.34385/proc.47.a2l-c-4
  • ISSN
    21885079
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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