Numerical study of the time-delay signature in chaos optical injection system with phase-conjugate feedback

被引：4
|
作者：
Mu, Penghua [1 ]
He, Pengfei [1 ]
Liu, Qiaoli [1 ]
Wang, Rui [1 ]
机构：
[1] Yantai Univ, Inst Sci & Technol Optoelect Informat, Yantai 264005, Shandong, Peoples R China
来源：
OPTIK | 2019年 / 179卷
关键词：
Semiconductor lasers; Chaos; Time-delay signature; RANDOM BIT GENERATION; SEMICONDUCTOR-LASER; CONCEALMENT;
D O I：
10.1016/j.ijleo.2018.10.164
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this contribution, the effects of two key internal parameters, i.e. the linewidth-enhancement factor (alpha) and the gain nonlinearity (epsilon), on time-delay signature (TDS) concealment of the optical injection chaos system with phase-conjugate feedback (PCF-OICS) are numerically investigated. The results show that, as the injection and feedback parameters (injection and feedback strength, frequency detuning) are varied, higher linewidth-enhancement factor and lower gain non linearity are useful for concealing the TDS, and our simulations uncover that combining the mechanism of PCF and chaotic optical injection is beneficial for TDS concealment in the slave semiconductor lasers (SSL).
引用
收藏
页码：71 / 75
页数：5
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