Theoretically investigation of tunable and broadband microwave frequency comb generation based on a current modulated semiconductor laser under optical injection

被引：0
|
作者：
Fan, Li [1 ]
Gou, Chen-Hao [1 ]
Wu, Zheng-Mao [2 ]
Xia, Guang-Qiong [2 ]
Ding, Zhu-Yu [3 ]
机构：
[1] Southwest Univ, Sch Elect & Informat Engn, Chongqing 400715, Peoples R China
[2] Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China
[3] Southwest Univ, Sch Engn & Technol, Chongqing 400715, Peoples R China
来源：
INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES VIII | 2021年 / 11906卷
基金：
中国国家自然科学基金;
关键词：
microwave frequency comb; semiconductor laser; current modulation; optical injection; NONLINEAR DYNAMICS; SUBJECT; CHAOS;
D O I：
10.1117/12.2601318
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：
Based on a current modulated semiconductor laser (SL) subject to optical injection, tunable and broadband microwave frequency comb (MFC) generation is theoretically investigated. For a SL under only current modulation, a seed MFC with relatively narrow bandwidth can be generated. Then, an optical injection is introduced to improve the quality of seed MFC. Furthermore, the influences of operation parameters on the performance of MFC are also discussed. The numerical results show that after introducing optical injection with injection coefficient k = 1.8 x 10(-4) and detuning frequency Delta f = 6.0 GHz, the MFC bandwidth can be further increased by 15.6 GHz and the signal-to-noise ratio can be improved by more than 20 dB.
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收藏
页数：6
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