光学学报, 2020, 40 (15): 1526001, 网络出版: 2020-08-14  

基于适应性矩估计的偏振控制算法 下载: 992次

Polarization Control Algorithm Based on Adaptive Moment Estimation
作者单位
西南通信研究所保密通信重点实验室, 四川 成都 610041
摘要
偏振控制可以有效恢复光纤传输过程中因相位偏移而受损的偏振态,是量子通信、光纤传感以及相干光通信等领域中的关键技术。提出了一种基于适应性矩估计(Adam)的偏振控制算法,建立了相应的偏振控制系统模型。基于该模型对Adam偏振控制算法进行了数值仿真,并与经典的随机梯度下降(SGD)算法进行了对比,同时分析了控制精度和噪声幅度对偏振控制效果的影响。仿真结果表明,该算法可以快速收敛到目标偏振态,在衰减率为0.03、噪声幅度为0.003、偏振迭代步数为53时,控制精度可达10 -4。与SGD算法相比,平均迭代步数减少了23%,最高控制精度提升了1~2个数量级。基于现场可编程门阵列验证了Adam算法的可行性,结果表明,该算法能快速、稳定地补偿信道中的偏振变化,并通过优化衰减率提高偏振控制效果、缩短偏振控制时间。
Abstract
Polarization control can effectively recover the polarization state shifted from the polarization phase drift during the fiber transmission, which is a key technology in quantum communication, optical fiber sensing, and coherent optical communication. In this paper, we propose a polarization control algorithm based on adaptive moment estimation (Adam) and establish a polarization control system model. Based on this model, the Adam polarization control algorithm is simulated and compared with classical stochastic gradient descent (SGD) algorithm, at the same time, the influences of control precision and noise amplitude on polarization control effect are analyzed. Simulation results show that the global optimal polarization state can be rapidly obtained by employing the proposed method. When the attenuation rate is 0.03, the noise amplitude is 0.003, and the number of polarization iterations is 53, the control precision is up to 10 -4. Compared with the SGD algorithm, the average iterative steps are reduced by 23% and the maximum control accuracy can be improved by 1--2 orders of magnitude. The feasibility of Adam algorithm is verified by field programmable gate array. The proposed algorithm can quickly and stably compensate the polarization change in the channel, and the polarization control time can be effectively shortened by optimizing the value of attenuation rate.

夏骞, 张涛, 刘金璐, 杨杰, 何远杭, 黄伟, 李大双, 徐兵杰. 基于适应性矩估计的偏振控制算法[J]. 光学学报, 2020, 40(15): 1526001. Qian Xia, Tao Zhang, Jinlu Liu, Jie Yang, Yuanhang He, Wei Huang, Dashuang Li, Bingjie Xu. Polarization Control Algorithm Based on Adaptive Moment Estimation[J]. Acta Optica Sinica, 2020, 40(15): 1526001.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!