Time-delay signature concealed broadband gain-coupled chaotic laser with fiber random grating induced distributed feedback

被引:16
作者
Xu, Yanping [1 ]
Zhang, Liang [1 ]
Lu, Ping [2 ]
Mihailov, Steven [2 ]
Chen, Liang [1 ]
Bao, Xiaoyi [1 ]
机构
[1] Univ Ottawa, Dept Phys, 25 Templeton St, Ottawa, ON K1N 6N5, Canada
[2] Natl Res Council Canada, 100 Sussex Dr, Ottawa, ON K1A 0R6, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Lasers; Distributed-feedback; Semiconductor lasers; Instabilities and chaos; RANDOM BIT GENERATION; SEMICONDUCTOR-LASERS; OPTICAL FEEDBACK; INJECTION; DYNAMICS; DIODE; SYNCHRONIZATION; SUPPRESSION; OUTPUT;
D O I
10.1016/j.optlastec.2018.08.057
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A broadband chaotic laser with a flat power spectrum extending up to similar to 7.53 GHz is achieved by injecting continuous wave laser light into a chaotic diode laser perturbed by fiber random grating induced distributed feedback, which forms a gain-coupled chaotic laser system. More than triple bandwidth enhancement is realized with appropriate frequency detuning between the master and slave lasers. Unlike normal chaotic lasers, the output from such a broadband chaotic laser is free from time-delay signature, which can be potentially applied for practical random number generations and will find useful applications in the fields of information security and computation systems.
引用
收藏
页码:654 / 658
页数:5
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