激光与光电子学进展, 2018, 55 (9): 090602, 网络出版: 2018-09-08
基于SPGD算法的光纤激光偏振控制理论与实验研究 下载: 675次
Theoretical and Experimental Research on Polarization Control of Fiber Laser Based on SPGD Algorithm
光纤光学 偏振控制 非保偏 消光比 随机并行梯度下降(SPGD)算法 fiber optics polarization control non-polarization maintaining extinction ratio stochastic parallel gradient descent (SPGD) algori
摘要
对非保偏光纤放大器进行偏振控制是获得高功率线偏振光纤激光输出的有效途径。介绍了光纤放大器偏振控制的原理, 对基于随机并行梯度下降(SPGD)算法的偏振控制进行了理论仿真, 分析了算法性能评价函数、扰动电压分布类型、增益步进、扰动幅度等参数对偏振控制效果的影响。利用现场可编程门逻辑阵列(FPGA)执行SPGD算法, 控制输出光的偏振态, 获得了消光比大于11 dB的激光输出。
Abstract
The polarization control of non-polarization maintaining fiber amplifier is an effective way to obtain high power linear polarization fiber laser output. In this paper, we introduce the principle of optical fiber amplifier polarization control based on stochastic parallel gradient descent (SPGD) algorithm, and also numerically analyze the effects of the parameters, such as algorithm performance evaluation function, influence of disturbance voltage distribution types, gain step and the disturbance amplitude on polarization control. Then we use field programmable gate logic array (FPGA) to perform SPGD algorithm, and control the polarization state of the output light. Finnaly, the obtained polarization extinction ratio of the output laser is greater than 11 dB.
尹明, 粟荣涛, 王小林, 马阎星, 马鹏飞. 基于SPGD算法的光纤激光偏振控制理论与实验研究[J]. 激光与光电子学进展, 2018, 55(9): 090602. Yin Ming, Su Rongtao, Wang Xiaolin, Ma Yanxing, Ma Pengfei. Theoretical and Experimental Research on Polarization Control of Fiber Laser Based on SPGD Algorithm[J]. Laser & Optoelectronics Progress, 2018, 55(9): 090602.