Generation of flat wideband chaos based on mutual injection of semiconductor lasers

被引：63
|
作者：
Qiao, Lijun [1 ,2 ]
Lv, Tianshuang [1 ,2 ]
Xu, Yong [3 ]
Zhang, Mingjiang [1 ,2 ]
Zhang, Jianzhong [1 ,2 ]
Wang, Tao [1 ,2 ]
Zhou, Rikai [3 ]
Wang, Qin [3 ]
Xu, Hongchun [3 ]
机构：
[1] Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Coll Phys & Optoelect, Taiyuan 030024, Shanxi, Peoples R China
[3] Accelink Technol Co Ltd, Wuhan 430000, Hubei, Peoples R China
来源：
OPTICS LETTERS | 2019年 / 44卷 / 22期
基金：
中国国家自然科学基金; 山西省青年科学基金;
关键词：
TIME-DELAY-SIGNATURE; RANDOM BIT GENERATION; BANDWIDTH-ENHANCED CHAOS; SYNCHRONIZATION; DIODE;
D O I：
10.1364/OL.44.005394
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this Letter, we propose and demonstrate a method to improve the bandwidth and flatness of chaotic signals using a mutual injection structure with two distributed feedback lasers. The frequency detuning and coupling strength are investigated to produce wideband flat chaos. The chaotic signal that the spectrum covers is greater than 50 GHz, which is approximately 6.42 times when compared with the one generated by the optical feedback, with a flatness of 5.6 dB achieved when the coupling strength is 1.635 and the frequency detuning is -33.5 GHz. (C) 2019 Optical Society of America
引用
收藏
页码：5394 / 5397
页数：4
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