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Nonlinear Dynamics in Semiconductor Quantum Dot Laser Subject to Double Delayed Feedback: Numerical Analysis
Brazilian Journal of Physics ( IF 1.6 ) Pub Date : 2020-07-25 , DOI: 10.1007/s13538-020-00780-9
Jian-Wei Wu , Hai-Bo Bao

In this study, the research on the nonlinear dynamics of semiconductor quantum dot laser with two time-delayed optical feedbacks is numerically investigated. Results show that the nonlinear dynamics behaviors of the laser are very sensitive to the rich system parameters in which both feedback strength and bias current are easily controlled to significantly influence the nonlinear dynamics including the periodic state and chaotic state. By judiciously adjusting the bias current of the laser or the feedback strength in the external cavity, period one, period doubling, quasi-period, and chaos are achieved. The feedback level-related bifurcation diagrams are analyzed in detail while fixing another feedback level at a constant or varying the bias current. In addition, the translation variables of the 0–1 test method that are clearly bounded for regular behavior and exhibit the Brownian motion for irregular phenomenon are adopted to further evaluate the periodic state and the chaotic state. These results can give insight into the quantum dot laser–based applications in various optical technologies.

中文翻译:

受双延迟反馈影响的半导体量子点激光器中的非线性动力学:数值分析

本研究对具有两个时滞光反馈的半导体量子点激光器的非线性动力学进行了数值研究。结果表明,激光器的非线性动力学行为对丰富的系统参数非常敏感,其中反馈强度和偏置电流都很容易控制,从而显着影响包括周期性状态和混沌状态在内的非线性动力学。通过明智地调整激光器的偏置电流或外腔内的反馈强度,实现了周期一、倍周期、准周期和混沌。详细分析了与反馈电平相关的分叉图,同时将另一个反馈电平固定为恒定或改变偏置电流。此外,采用0-1测试方法的平移变量对规则行为有明确界限,对不规则现象表现出布朗运动,进一步评估周期状态和混沌状态。这些结果可以深入了解基于量子点激光器在各种光学技术中的应用。
更新日期:2020-07-25
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