中国激光, 2019, 46 (2): 0206001, 网络出版: 2019-05-09
基于能量反馈的单模光纤激光章动耦合算法 下载: 951次
Laser Nutation Coupling Algorithm for Single Mode Fiber Based on Energy Feedback
光通信 自由空间光通信 单模光纤耦合 激光章动 能量反馈 快速反射镜 optical communications free space optical communication single mode fiber coupling laser nutation power feedback fast steering mirror
摘要
基于模场匹配原理,分析了倾斜像差对耦合效率的影响,并在理论分析的基础上,对激光章动跟踪方法进行了仿真分析,研究了章动算法参数对算法动态性能的影响。利用快速反射镜和PIN(Positive-Intrinsic-Negative)光电二极管对仿真分析结果进行实验验证。结果表明,章动半径与收敛速度成反比,同时半径增大会引起稳态振荡幅度增大,而采样点数的增多会导致算法收敛速度下降。此外,所提算法对一定范围内的动态扰动有明显的抑制作用。
Abstract
Based on the principle of mode field matching, we analyze the influence of tilt aberration on coupling efficiency, and then the laser nutation tracking method is simulated and analyzed according to theoretical analysis. The simulation results are verified by experiments based on fast steering mirror and PIN (Positive-Intrinsic-Negative) photodiode. The results show that the nutation radius is inversely proportional to the convergence rate, and the steady-state oscillation amplitude increases with the increasing radius, while the convergence rate decreases with the increase of the number of sampling points. In addition, the proposed algorithm can significantly suppress the dynamic disturbance in a certain range.
朱世伟, 盛磊, 刘永凯, 张玉良, 高世杰. 基于能量反馈的单模光纤激光章动耦合算法[J]. 中国激光, 2019, 46(2): 0206001. Shiwei Zhu, Lei Sheng, Yongkai Liu, Yuliang Zhang, Shijie Gao. Laser Nutation Coupling Algorithm for Single Mode Fiber Based on Energy Feedback[J]. Chinese Journal of Lasers, 2019, 46(2): 0206001.