基于光注入直接调制半导体激光器的混沌带宽增强OA
Chaos bandwidth enhancement via optical injection and direct modulation of semiconductor lasers
提出一种利用光注入直接调制半导体激光器增强混沌带宽的方法.利用两个自由运行半导体激光器构成单向主从结构,引入直接调制使半导体激光器产生调制边带,通过优化调制深度、调制频率、频率失谐以及注入强度,实现了原始混沌信号的带宽增强.实验结果表明,当主激光器和从激光器的电流调制频率分别为1.3 GHz和1.6 GHz时,利用光注入分布式反馈半导体激光器的混沌信号将最大带宽从7.2 GHz提升至14.1 GHz,使混沌带宽增加了近1倍.进一步分析主从激光器施加的调制信号对从激光器输出特性的影响发现,该混沌带宽增强是由两个半导体激光器调制边带之间相互拍频所导致.
A scheme for enhancing the chaos bandwidth by directly modulating semiconductor lasers subject to optical injection is proposed.A unidirectional master-slave configuration is constructed using two free-running semiconductor lasers.By introducing direct modulation to generate modulation sidebands in semiconductor lasers,the bandwidth of the original chaos signal can be enhanced through optimization of modulation depth,modulation frequency,frequency detuning and injection intensity.Experimental results show that when the current modulation frequencies applied to the master and slave lasers are 1.3 GHz and 1.6 GHz,respectively,the maximum bandwidth of the chaos signal of an optically injected distributed feedback semiconductor laser increases from 7.2 GHz to 14.1 GHz,corresponding to nearly a twofold enhancement.Further analysis of the modulation-induced spectral evolution reveals that the bandwidth enhancement originates from beat-frequency interactions between the modulation sidebands of the two semiconductor lasers,which effectively broaden the chaotic spectrum.
尚锦涵;熊浩凯;张建国;李璞
太原理工大学新型传感器与智能控制教育部重点实验室,山西 太原 030600太原理工大学新型传感器与智能控制教育部重点实验室,山西 太原 030600太原理工大学新型传感器与智能控制教育部重点实验室,山西 太原 030600广东工业大学先进光子技术研究院,广东 广州 510006||广东工业大学通感融合光子技术教育部重点实验室,广东 广州 510006||广东工业大学广东省信息光子技术重点实验室,广东 广州 510006
信息技术与安全科学
光学工程混沌激光半导体激光器带宽直接调制单向光注入拍频
optical engineeringchaotic lasersemiconductor laserbandwidthdirect modulationunidirectional optical injectionbeat frequency
《深圳大学学报（理工版）》 2026 (2)
209-214,6
National Key Research and Development Program of China(2024YFB2808400)National Natural Science Foundation of China(62175177,62322504)Guangdong Introducing Innovative and Entrepreneurial Teams of"The Pearl River Talent Recruitment Program"(2019ZT08X340) 国家重点研发计划资助项目(2024YFB2808400)国家自然科学基金资助项目(62175177,62322504)广东省引进珠江人才招聘计划创新团队资助项目(2019ZT08X340)
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