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Acta Optica Sinica, Volume. 45, Issue 13, 1306036(2025)

Adaptive Optics Combined with Mode Diversity Reception for High-Orbit Satellite-to-Ground Laser Communication Experiment (Invited)

Wenjie Guo1, Donghao Zheng4, Bin Lan2, Kexiang Wang1, Ao Li1, Zhengjie Wang1, Shuai Wei1, Yaning Sun1, Kejia Xu1, Tianjun Dai2, Kaihe Zhang2, Huijian Liang3, Changzhi Xu3, Yan Li1, Chao Liu2、**, and Jian Wu1、*
Author Affiliations
  • 1State Key Laboratory of Photonic and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2National Key Laboratory of Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, Sichuan , China
  • 3Xi’an Institute of Space Radio Technology, Xi’an 710199, Shaanxi , China
  • 4Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
    Equations (0)
    References (32)
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    Figures & Tables(9)
    High-orbit satellite-to-ground laser communication experiment system

    Fig. 1. High-orbit satellite-to-ground laser communication experiment system

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    Physical diagram of the receiving system. (a) Receiving optical path; (b) communication system

    Fig. 2. Physical diagram of the receiving system. (a) Receiving optical path; (b) communication system

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    Tracking spot and system tracking error curves during stable link establishment

    Fig. 3. Tracking spot and system tracking error curves during stable link establishment

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    Variation curve of wavefront RMS

    Fig. 4. Variation curve of wavefront RMS

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    PDF distributions of output power at MPLC single-mode ends

    Fig. 5. PDF distributions of output power at MPLC single-mode ends

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    PDF and CCDF for single circuit base mode and SC post power under AO open and closed loop conditions

    Fig. 6. PDF and CCDF for single circuit base mode and SC post power under AO open and closed loop conditions

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    BER characteristics of each frame before combining single roadbed modulus and SC signal error correction code. (a) Probability distribution; (b) time-varying curves

    Fig. 7. BER characteristics of each frame before combining single roadbed modulus and SC signal error correction code. (a) Probability distribution; (b) time-varying curves

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    • Table 1. Main parameters of the experimental system

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      Table 1. Main parameters of the experimental system

      Key indicatorParameter value
      Wavelength of down-link signal light1550.52 nm
      Transmit power2 W
      Satellite-to-ground link distance36702 km
      Telescope aperture1.8 m
      Number of effective microlenses in WFS316
      Number of DM actuators357
      Splitting ratio of the beam splitter9∶1
      Multimode end configuration of MPLCOM2(50/125 μm)
      Single-mode end configuration of MPLCSMF-28(8.2/125 μm)
      Insertion loss of MPLC1.2 dB
      Modulation formatBPSK
      Communication reception method3-channel digital coherent reception
      Signal combining methodSelection combining method

    • Table 2. Power comparison with different turbulence compensation methods

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      Table 2. Power comparison with different turbulence compensation methods

      Type of

      compensation

      		Power /dBm (CCDF is 0.9)Power /dBm (mean)Power gain /dB(CCDF is 0.9)Power gain /dB(mean)Power std /dB
      SMF-71.76-62.80——6.10
      SMF+AO-55.53-47.9216.2314.885.58
      MDR(SC)-68.94-60.242.822.564.80
      AO+MDR(SC)-51.59-47.2920.1715.512.91
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    Wenjie Guo, Donghao Zheng, Bin Lan, Kexiang Wang, Ao Li, Zhengjie Wang, Shuai Wei, Yaning Sun, Kejia Xu, Tianjun Dai, Kaihe Zhang, Huijian Liang, Changzhi Xu, Yan Li, Chao Liu, Jian Wu. Adaptive Optics Combined with Mode Diversity Reception for High-Orbit Satellite-to-Ground Laser Communication Experiment (Invited)[J]. Acta Optica Sinica, 2025, 45(13): 1306036

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Apr. 19, 2025

    Accepted: May. 26, 2025

    Published Online: Jul. 15, 2025

    The Author Email: Chao Liu (liuchao@ioe.ac.cn), Jian Wu (jianwu@bupt.edu.cn)

    DOI:10.3788/AOS250962

    CSTR:32393.14.AOS250962

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology