High-accuracy atmospheric turbulence compensation based on a Wirtinger flow algorithm in an orbital angular momentum-free space optical communication system
High-accuracy atmospheric turbulence compensation based on a Wirtinger flow algorithm in an orbital angular momentum-free space optical communication system
复制标题
轨道无角动量空间光通信系统中基于Wirtinger流算法的高精度大气湍流补偿
DOI：
10.1016/j.optcom.2020.126322
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发表时间：
2020-12
影响因子：
2.4
通讯作者：
Yongjun Wang
中科院分区：
文献类型：
--
作者：
Sitong Zhou;Qi Zhang;Ran Gao;Huan Chang;Xiangjun Xin;Shanshan Li;Xiaolong Pan;Qinghua Tian;Feng Tian;Yongjun Wang
在这项研究中，高精度的大气湍流补偿的基础上Wirtinger流（WF）算法的轨道角动量自由空间光学系统进行了演示。介绍了一种基于波前传感部分的自适应光学补偿方法。此外，波前感测部分的配置复杂度被减少到一个输入。WF算法可以被认为是一个梯度下降法，有两个步骤，初始化和迭代，有效地防止陷入局部最优解。对WF算法的补偿性能进行了数值仿真。仿真结果表明，该补偿方法能有效地消除大气湍流的影响。性能参数，即均方根（RMS）误差，模式纯度，串扰和误码率，显着改善。特别是，与传统Gerchberg-Saxton算法的10− 2误差相比，该算法的RMS误差减小到10− 15。仿真结果表明了WF算法的有效性和准确性。
In this study, high-accuracy atmospheric turbulence compensation based on a Wirtinger flow (WF) algorithm in an orbital angular momentum-free space optical system is demonstrated. An adaptive optics compensation approach based on the WF sensing part is introduced. In addition, the configuration complexity of the wavefront sensing part is reduced to one input. The WF algorithm can be considered as a gradient descent method with two steps, initialisation and iteration, which effectively prevent a fall into the local optimal solution. The compensation performance of the WF algorithm is numerically simulated. The simulation results demonstrate that the compensation can effectively eliminate the impact of atmospheric turbulence. The performance parameters, namely, root-mean-square (RMS) error, mode purity, crosstalk and bit error rate, are significantly improved. In particular, the RMS error reduces to 10−15compared with 10−2for the conventional Gerchberg–Saxton algorithm. The performance of the simulations indicates the high effectiveness and accuracy of the WF algorithm.
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影响因子：
3.8
作者：
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通讯作者：
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影响因子：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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