Journal
OPTICS EXPRESS
Volume 20, Issue 2, Pages 1741-1753Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.001741
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Funding
- National Natural Science Foundation of China [60978003, 61078003, 11004161, 61178011]
- Natural Science Foundation of Chongqing City
- Fundamental Research Funds for the Central Universities [XDJK2010C021]
- State Key Lab of Millimeter Waves
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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. (C)2012 Optical Society of America
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