Evolution of time delay signature of chaos generated in a mutually delay-coupled semiconductor lasers system

In this paper, evolution of time delay (TD) signature of chaos generated in a mutual delay-coupled semiconductor lasers (MDC-SLs) system is investigated experimentally and theoretically. Two statistical methods, including self-correlation function (SF) and permutation entropy (PE), are used to estim...

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Bibliographic Details
Published inOptics express Vol. 20; no. 2; p. 1741
Main Authors Wu, Jia-Gui, Wu, Zheng-Mao, Xia, Guang-Qiong, Feng, Guo-Ying
Format Journal Article
LanguageEnglish
Published United States 16.01.2012
Subjects
Equipment Design
Lasers, Semiconductor
Models, Theoretical
Nonlinear Dynamics
Optics and Photonics - instrumentation
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Summary:In this paper, evolution of time delay (TD) signature of chaos generated in a mutual delay-coupled semiconductor lasers (MDC-SLs) system is investigated experimentally and theoretically. Two statistical methods, including self-correlation function (SF) and permutation entropy (PE), are used to estimate the TD signature of chaotic time series. Through extracting the characteristic peak from the SF curve, a series of TD signature evolution maps are firstly obtained in the parameter space of coupled strength and frequency detuning. Meantime, the influences of injection current on the evolution maps of TD signature have been discussed, and the optimum scope of TD signature suppression is also specified. An overall qualitative agreement between our theoretical and experimental results is obtained.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.001741