Ground equivalent verification for atmospheric turbulence effects on fiber-coupling efficiency of satellite-to-ground downlink

Qingbo Yang; Lifang Li; Pengzhen Guo; Qiang Wang; Siyuan Yu; Liying Tan; Jing Ma

doi:10.1117/1.OE.57.12.126102

10 December 2018 Ground equivalent verification for atmospheric turbulence effects on fiber-coupling efficiency of satellite-to-ground downlink

Qingbo Yang, Lifang Li, Pengzhen Guo, Qiang Wang, Siyuan Yu, Liying Tan, Jing Ma

Author Affiliations +

Optical Engineering, Vol. 57, Issue 12, 126102 (December 2018). https://doi.org/10.1117/1.OE.57.12.126102

Abstract

The fiber-coupling efficiency of a satellite-to-ground (STG) downlink laser communication system is particularly influenced by atmospheric turbulence, thereby reducing the communication performance significantly. We report on a highly reliable ground equivalent verification to demonstrate the atmospheric turbulence effects on the fiber-coupling efficiency of an STG downlink. Statistical distribution of fiber-coupling efficiency obtained by experiment contributes a high consistency with the numerical simulation, with a correlation coefficient of above 0.97. The average deviation of fiber-coupling efficiency is only around 10% according to different trials on the course of ground equivalent verification. Ground equivalent verification provides a way to study the actual STG downlink with a smaller diameter of aperture, which might also potentially be a great help to serve on an experimental basis and reference for the optimal design of the STG downlink laser communication systems.

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Qingbo Yang, Lifang Li, Pengzhen Guo, Qiang Wang, Siyuan Yu, Liying Tan, and Jing Ma "Ground equivalent verification for atmospheric turbulence effects on fiber-coupling efficiency of satellite-to-ground downlink," Optical Engineering 57(12), 126102 (10 December 2018). https://doi.org/10.1117/1.OE.57.12.126102

Received: 18 August 2018; Accepted: 19 November 2018; Published: 10 December 2018

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