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10 May 2023 Fast beam alignment of wireless optical communication link based on laser scanning and echo enhancement
Yubo Cai, Bing Lei, Haoyu Zhang, Jianhua Shi
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Proceedings Volume 12554, AOPC 2022: Advanced Laser Technology and Applications; 1255415 (2023) https://doi.org/10.1117/12.2652063
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China
Abstract
Aiming at the issue of rapid establishment of wireless optical communication (WOC) link between two cooperativeterminals, a fast laser beam alignment technique based on laser scanning and echo enhancement has been proposedandrealized. The scanning modes such as rectangular scanning, Lissajous scanning, spiral scanning and rectangular spiral scanning, are analyzed and selected for the system carefully. The cube-corner retroreflector (CCR) are equippedonthecooperative terminal to enhance the echo. The target capturing experiments have been demonstrated in different statesbased on the scheme, and the effect of the CCR’s installing angle on the aligning performance was researchedbyexperiments. The experimental results indicate that the system could capture the CCR at the largest distance of 45meterswithin 22 seconds and track the CCR in the tilting angle ranges of ±30°. The proposed system can automaticallyrealizethe beam alignment effectively and rapidly with the aid of CCR, and the whole alignment process does not need anyhelpof radio frequency (RF) communication signal. The beam alignment scheme is simple and easy to be implemented, andit has the potential to boost the practical application of WOC.
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Citation Download Citation
Yubo Cai, Bing Lei, Haoyu Zhang, and Jianhua Shi "Fast beam alignment of wireless optical communication link based on laser scanning and echo enhancement", Proc. SPIE 12554, AOPC 2022: Advanced Laser Technology and Applications, 1255415 (10 May 2023); https://doi.org/10.1117/12.2652063
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KEYWORDS
Acquisition tracking and pointing
Laser scanners
Wireless communications
Optical alignment
Automatic tracking
Free space optics
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