光纤光栅外腔半导体激光器噪声特性仿真  

Simulation of Noise Characteristics of Fiber Grating External Cavity Lasers

作　　者：王直圆 陈超[1] 单肖楠[1] 秦莉[1] 张星[1] 陈泳屹[1] 梁磊[1] 贾鹏[1] 宁永强[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《激光与光电子学进展》2017年第1期150-157,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61505206;61234004;61434005;61306086);吉林省科技计划项目(20150520089JH)

摘　　要：基于激光器的增益理论和动态理论,结合经典的激光器速率方程,分析了激光器有源区尺寸、光纤光栅结构、耦合效率和注入电流等参数对频率噪声和弛豫振荡频率的影响。以获得低频率噪声和高驰豫振荡频率为目标,进行数字仿真,仿真结果表明,较小的激光器有源区尺寸、较强的外腔光反馈和较高的注入电流有利于改善噪声特性,其中注入电流的影响尤为重要。当注入电流为阈值电流的9倍时,频率噪声降低约14.7%,弛豫振荡频率增加约6.0GHz。Based on the gain theory and the laser dynamic theory of laser, the effects of laser active region size, fiber grating structure, cotapling efficiency and iniection current on frequency noise and relaxation-oscillation frequency are analyzed, when we combine with the classical laser rate equation. To obtain low frequency noise and high relaxation oscillation frequency, a simulation is conducted. The simulation results show that a small laser active region size, a strong external cavity light feedback and a high injection current are beneficial to the improvement of noise characteristics, and the influence of injection current is especially important. When the injection current is 9 times higher than the threshold current, the frequency noise reduces by 14. 7%, and the relaxation oscillation frequency increases about 6.0 GHz.

关 键 词：激光器 半导体激光器 外腔 光纤光栅 频率噪声 弛豫振荡频率 

分 类 号：TN248.4[电子电信—物理电子学]