Fast acquisition system for laser communication based on beam splitting and expanding

Yahe Yang; Song Song; Junxian Wu; Xiong Liu; Shuai Zhang; Tianming Xu

doi:10.1117/12.2605950

15 September 2021 Fast acquisition system for laser communication based on beam splitting and expanding

Yahe Yang, Song Song, Junxian Wu, Xiong Liu, Shuai Zhang, Tianming Xu

Proceedings Volume 11915, International Conference on Optics and Image Processing (ICOIP 2021); 119150P (2021) https://doi.org/10.1117/12.2605950
Event: International Conference on Optics and Image Processing (ICOIP 2021), 2021, Guilin, China

Abstract

This paper aims to solve the problem of long acquisition time in beacon-less acquisition system for satellite laser communication. This paper splits and expands the Gaussian laser beam, and proposes three laser beam scanning schemes, including simultaneous scanning in areas, simultaneous scanning in the inner and outer circles, and simultaneous scanning in jumps. When one laser beam is divided into multiple laser beams, increasing the beam waist radius of the laser means increasing the beam divergence angle. In order to increase the total effective spot area, multiple laser beams are expanded to scan at the same time without affecting the scanning uncertainty region and the response intensity of photodetector. Accordingly, the number of scanning steps required for acquisition is reduced, thereby shortening the acquisition time and speeding up the successful acquisition. Results show that the proposed beacon-free fast acquisition system based on laser beam splitting and beam expanding can improve the acquisition efficiency of satellite laser communication without affecting the optical detection responsivity.

Citation Download Citation

Yahe Yang, Song Song, Junxian Wu, Xiong Liu, Shuai Zhang, and Tianming Xu "Fast acquisition system for laser communication based on beam splitting and expanding", Proc. SPIE 11915, International Conference on Optics and Image Processing (ICOIP 2021), 119150P (15 September 2021); https://doi.org/10.1117/12.2605950

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KEYWORDS

Beam splitters

Laser communications

Satellite communications

Telecommunications

Satellites

Sensors

Laser systems engineering

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