Time-delay signature suppression in delayed-feedback semiconductor lasers as a paradigm for feedback control in complex physiological networks

被引:0
|
作者
Hong, Yanhua [1 ]
Zhong, Zhuqiang [2 ]
Shore, K. Alan [1 ]
机构
[1] Bangor Univ, Sch Comp Sci & Engn, Bangor, Wales
[2] Chongqing Univ Technol, Coll Sci, Chongqing, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
chaos; network physiology; feedback control; nonlinear dynamics; semiconductor lasers; BROAD-BAND CHAOS; PHASE-MODULATED FEEDBACK; SURFACE-EMITTING LASERS; OPTICAL FEEDBACK; GENERATION; CONCEALMENT; SUBJECT; MODE;
D O I
10.3389/fnetp.2023.1330375
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
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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页数:8
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