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首页> 外文期刊>IEEE Journal of Quantum Electronics >Identification of the Optimum Time-Delay for Chaos Synchronization Regimes of Semiconductor Lasers
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Identification of the Optimum Time-Delay for Chaos Synchronization Regimes of Semiconductor Lasers

机译：半导体激光器混沌同步制度的最佳时延的确定

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It is shown that the optimum correlation for chaos synchronization of master-slave semiconductor lasers occurs at a delay time that is sensitive to both the injection strength and the frequency detuning of the driving field. This effect may be overlooked if the correlation function is not evaluated globally. The correlation function has been used as the de facto method for quantitatively determining the degree of synchronization achieved between unidirectional coupled chaotic semiconductor lasers, see for example [9]-[19]. The correlation function is a continuous function of the delay time but is normally evaluated at only two delay times. It is shown that this approach can cause a misidentification of the dominant synchronization process and can also mask important temporal fluctuations in the nature and quality of the chaos synchronization. In essence, two factors contribute to the potential for misidentification, the first is the inherent small time shift required to obtain the optimum correlation and the second is the quasi-periodicity that is present in certain chaotic regimes. This paper shows that a reevaluation of some of the published numerical studies of chaos synchronization is necessary.
机译：结果表明，用于主-从半导体激光器的混沌同步的最佳相关发生在对驱动场的注入强度和频率失谐都敏感的延迟时间处。如果未全局评估相关函数，则可能会忽略此效果。相关函数已被用作事实上的方法，用于定量确定单向耦合混沌半导体激光器之间实现的同步程度，例如参见[9]-[19]。相关函数是延迟时间的连续函数，但通常仅在两个延迟时间进行评估。结果表明，这种方法可能导致对主要同步过程的错误识别，并且还可能掩盖混沌同步的性质和质量方面的重要时间波动。从本质上讲，有两个因素可能导致错误识别，第一个因素是获得最佳相关性所需的固有小时移，第二个因素是某些混沌状态下的准周期性。本文表明，有必要对一些已发表的混沌同步数值研究进行重新评估。

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