• Optical Communication Technology
  • Vol. 47, Issue 5, 44 (2021)
TAO Kunyu1, CAO Zhewei1, YANG Qi2, SONG Yiwei1..., CHEN Xinyi1, JIANG Yijun1 and FU Sen1|Show fewer author(s)
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  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: 10.13921/j.cnki.issn1002-5561.2021.05.010 Cite this Article
    TAO Kunyu, CAO Zhewei, YANG Qi, SONG Yiwei, CHEN Xinyi, JIANG Yijun, FU Sen. Problems and solutions of ultra-high speed digital coherent space laser communication[J]. Optical Communication Technology, 2021, 47(5): 44 Copy Citation Text show less

    Abstract

    In order to solve the problem of ultra-high speed space transmission and ensure the realization of our country's space-based broadband communication network, the necessity of applying digital coherence scheme to ultra-high speed space laser communication is analyzed in this paper, four problems in achieving this goal existed at current stage are summarized as follows: single-mode fiber coupling, low noise amplification of the erbium doped fiber amplifier(EDFA), algorithm of digital encoding and decoding, and hardware architecture. The solutions to these four problems are put forward one by one: fast steering mirror (FSM) tracking and adaptive nutation, segmented noise suppression, floating point parallel processing algorithm and integration. This paper analyzes the development trend of space laser communication technology, and finally gives the prediction of the future development direction of technology.
    TAO Kunyu, CAO Zhewei, YANG Qi, SONG Yiwei, CHEN Xinyi, JIANG Yijun, FU Sen. Problems and solutions of ultra-high speed digital coherent space laser communication[J]. Optical Communication Technology, 2021, 47(5): 44
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