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Laser beam distorted wavefront correction based on deformable mirror eigenmodes

机译：基于变形镜本征模的激光畸变波前校正

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摘要

To improve the performance of wireless laser communication (WLC) systems, wavefront sensorless adaptive optics based on deformable mirror (DM) eigenmodes was used to correct the distorted far-field spot. A set of DM eigenmodes conforming to the derivative-orthogonal relationship is derived, and the system simulation model under different atmospheric turbulence intensities is established by combining Fresnel diffraction and multiphase screen transmission principle. The influence of mode bias on the correction effect is analyzed. The ability of the proposed method to correct the distorted far-field spot was studied by using Strehl ratio (SR) as the evaluation index. The influence of the proposed method on the coupling efficiency of single-mode fiber and bit error rate performance of the WLC system is discussed. Indoor and outdoor experimental systems were built. The indoor experiment results show that the proposed method can increase the SR of the system from 0.11, 0.32, and 0.56 to 0.57, 0.71, and 0.88, respectively. The outdoor experiment results show that the proposed method can effectively correct the wavefront distortion caused by dynamic atmospheric turbulence.
机译：为了提高无线激光通信（WLC）系统的性能，基于可变形反射镜（DM）本征模式的波前无传感器自适应光学器件用于校正畸变的远场光斑。推导了一组符合导数-正交关系的DM本征模，并结合菲涅耳衍射和多相屏传输原理，建立了不同湍流强度下的系统仿真模型。分析了模式偏差对校正效果的影响。以斯特列尔比（SR）为评价指标，研究了该方法对畸变远场斑的校正能力。讨论了该方法对单模光纤耦合效率和WLC系统误码率性能的影响。建立了室内和室外实验系统。室内实验结果表明，该方法可以将系统的SR分别从0.11、0.32和0.56提高到0.57、0.71和0.88。室外实验结果表明，该方法可以有效地校正动态大气湍流引起的波前畸变。

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  • 来源
    《Optical engineering》 |2019年第12期|92-100|共9页
  • 作者

    Xizheng Ke; Mei Li;

  • 作者单位

    Xi'an University of Technology School of Automation and Information Engineering Xi'an Shaanxi China Shaanxi Civil-Military Integration Key Laboratory of Intelligence Collaborative Networks Shaanxi China;

    Xi'an University of Technology School of Automation and Information Engineering Xi'an Shaanxi China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    adaptive optics; wireless laser communication; wavefront correction; deformable mirror eigenmodes;

    机译：自适应光学无线激光通讯;波前校正变形镜本征模;

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