Generation of Wideband Chaos With Time-Delay Signature Suppression in Semiconductor Lasers by Asymmetrical Mutual Injection

被引：1
|
作者：
Wei, Xiaojing [1 ,2 ]
Qiao, Lijun [3 ]
Wang, Biao [1 ,2 ]
Chai, Mengmeng [1 ,2 ]
Zhang, Mingjiang [3 ,4 ]
机构：
[1] Taiyuan Univ Technol, Minist Educ, Key Lab Adv Transducers & Intelligent Control Syst, Taiyuan 030024, Peoples R China
[2] Taiyuan Univ Technol, Coll Optoelect, Taiyuan 030024, Peoples R China
[3] Taiyuan Univ Technol, Coll Phys, Taiyuan 030024, Peoples R China
[4] Shanxi Zheda Inst Adv Mat & Chem Engn, Taiyuan 030032, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2024年 / 42卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Asymmetrical mutual injection; flat spectrum; semiconductor lasers; time-delay signature suppression; wideband chaos; RANDOM BIT GENERATION; FEEDBACK; COMMUNICATION; CONCEALMENT; OUTPUT;
D O I：
10.1109/JLT.2023.3322629
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A method for generating wideband chaos with time-delay signature suppression in semiconductor lasers by asymmetrical mutual injection is proposed and demonstrated experimentally. Through the beating frequency effect between the two semiconductor lasers subjected to asymmetrical mutual injection, a chaotic signal with the standard bandwidth of 33.5 GHz, the spectrum flatness of 8.5 dB and the time delay signature value of 0.059 is generated. The influences of the coupling strength and the frequency detuning on the output characteristics of chaotic laser and synchronization coefficient of the two semiconductor lasers are analyzed. Furthermore, the relationships between the synchronization coefficient and the output characteristics of the two lasers are also discussed, respectively. The results show that in the case of asymmetrical mutual injection, the region of the high synchronization coefficient is larger when the output characteristics of the two lasers are different than those of the two lasers are identical.
引用
收藏
页码：1556 / 1565
页数：10
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