延迟反馈半导体激光器中的时延特征抑制是复杂生理网络反馈控制的范例

Yanhua Hong, Zhuqiang Zhong, K. A. Shore
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引用次数: 0

摘要

正如在人类机体中观察到的那样,生理网络涉及具有反馈回路的多组件系统,有助于自我调节。伴有时延效应的生理现象可能会导致其行为出现振荡甚至混沌动态。在受到延迟光反馈的半导体激光器中也能发现类似的动态,其动态通常包括时延特征。在半导体激光器的许多应用中,抑制时延特征是至关重要的,因此人们为此采用了多种方法。本文介绍了利用光子滤波器抑制半导体激光器中受延迟光反馈效应影响的时延特征的实验结果。本文使用了两种半导体激光器:分立模式半导体激光器和垂直腔表面发射激光器(VCSEL)。研究表明,在分立模式半导体激光器中,使用光子滤波器可以完全抑制时延特征,但在垂直腔表面发射激光器中,时延特征的残余仍然存在。这些结果有助于更广泛地理解复杂系统中的时延效应。将光子滤波器作为抑制时延特征的一种手段,为其在不同领域的潜在应用开辟了途径,从而扩展了本研究的跨学科性质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Time-delay signature suppression in delayed-feedback semiconductor lasers as a paradigm for feedback control in complex physiological networks
Physiological networks, as observed in the human organism, involve multi-component systems with feedback loops that contribute to self-regulation. Physiological phenomena accompanied by time-delay effects may lead to oscillatory and even chaotic dynamics in their behaviors. Analogous dynamics are found in semiconductor lasers subjected to delayed optical feedback, where the dynamics typically include a time-delay signature. In many applications of semiconductor lasers, the suppression of the time-delay signature is essential, and hence several approaches have been adopted for that purpose. In this paper, experimental results are presented wherein photonic filters utilized in order to suppress time-delay signatures in semiconductor lasers subjected to delayed optical feedback effects. Two types of semiconductor lasers are used: discrete-mode semiconductor lasers and vertical-cavity surface-emitting lasers (VCSELs). It is shown that with the use of photonic filters, a complete suppression of the time-delay signature may be affected in discrete-mode semiconductor lasers, but a remnant of the signature persists in VCSELs. These results contribute to the broader understanding of time-delay effects in complex systems. The exploration of photonic filters as a means to suppress time-delay signatures opens avenues for potential applications in diverse fields, extending the interdisciplinary nature of this study.
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