Wideband Polarization-Resolved Chaos With Time-Delay Signature Suppression in VCSELs Subject to Dual Chaotic Optical Injections

被引：15
|
作者：
Chen, Jian-Jun [1 ]
Duan, Ying-Ni [1 ]
Li, Lin-Fu [2 ]
Zhong, Zhu-Qiang [3 ]
机构：
[1] Xinjiang Med Univ, Sch Med Engn & Technol, Urumqi 830011, Peoples R China
[2] Guizhou Minzu Univ, Sch Mechatron Engn, Guiyang 550025, Guizhou, Peoples R China
[3] Chongqing Univ Technol, Sch Sci, Chongqing 400054, Peoples R China
来源：
IEEE ACCESS | 2018年 / 6卷
基金：
中国国家自然科学基金;
关键词：
Vertical cavity surface emitting lasers; dual chaotic optical injections; chaos; bandwidth; time-delay signature; SURFACE-EMITTING LASERS; RANDOM BIT GENERATION; BANDWIDTH-ENHANCED CHAOS; SEMICONDUCTOR-LASER; DIODE SUBJECT; FEEDBACK; CONCEALMENT; SYNCHRONIZATION; DYNAMICS;
D O I：
10.1109/ACCESS.2018.2878734
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Both the polarization-resolved chaotic bandwidth enhancement and time-delay signature suppression have been numerically investigated based on a slave vertical-cavity surface-emitting laser (S-VCSEL) driven by dual chaotic optical injections (DCOIs) from two master VCSELs (M-VCSELs) under optical feedbacks. The bandwidth and time-delay signature of polarization-resolved chaos generated in VCSELs are evaluated quantitatively via the effective bandwidth and autocorrelation function, respectively. The results show that, in contrast to the polarization-resolved chaos generated from S-VCSEL subject to single chaotic optical injection, for the equivalent injection conditions, the chaos generated by the DCOI configuration can simultaneously realize the bandwidth enhancement and time-delay signature suppression in the distinctly wider injection parameter spaces of injection strength and frequency detuning. By further exploring the influences of different injection parameters from two injection M-VCSELs on the bandwidth and time-delay signature of chaos, it is found that for the DCOI, the moderate injection strengths and relatively larger frequency detuning of two different injection paths are preferred to obtain the desired wideband polarization-resolved chaos with successful time-delay signature suppression.
引用
收藏
页码：66807 / 66815
页数：9
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