Numerical Simulation of External-Cavity Distributed Feedback Semiconductor Laser  

作　　者：Tianyu Guan Chaoze Zhang Yuqin Mao Ligang Huang Tao Zhu Tianyu Guan;Chaoze Zhang;Yuqin Mao;Ligang Huang;Tao Zhu(Key Laboratory of Optoelectronic Technology and Systems, Chongqing University, Chongqing, China)

机构地区：[1]Key Laboratory of Optoelectronic Technology and Systems, Chongqing University, Chongqing, China

出　　处：《Optics and Photonics Journal》2023年第6期109-118,共10页光学与光子学期刊（英文）

摘　　要：We propose a theoretical model to describe external-cavity distributed feedback semiconductor lasers and investigate the impact of the number of external feedback points on linewidth and side-mode suppression ratio through numerical simulation. The simulation results demonstrate that the linewidth of external-cavity semiconductor lasers can be reduced by increasing the external cavity length and feedback ratio, and adding more external feedback points can further narrow the linewidth and enhance the side mode suppression ratio. This research provides insight into the external cavity distributed feedback mechanism and can guide the design of high-performance external cavity semiconductor lasers. .We propose a theoretical model to describe external-cavity distributed feedback semiconductor lasers and investigate the impact of the number of external feedback points on linewidth and side-mode suppression ratio through numerical simulation. The simulation results demonstrate that the linewidth of external-cavity semiconductor lasers can be reduced by increasing the external cavity length and feedback ratio, and adding more external feedback points can further narrow the linewidth and enhance the side mode suppression ratio. This research provides insight into the external cavity distributed feedback mechanism and can guide the design of high-performance external cavity semiconductor lasers. .

关 键 词：External-Cavity Distributed Feedback Linewidth Compression Mul-ti-Point Feedback Narrow-Linewidth Laser Semiconductor Laser 

分 类 号：TN2[电子电信—物理电子学]