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30 April 2024 Experimental demonstration of measuring angle of incidence for light into receiver in underwater laser communication system based on four-quadrant detector
Yuan Peng, Bili Li, Yongqiang Kang, Yunzhou Zhu, Qihang Sun, Zhepeng Huang, Biao Han
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Proceedings Volume 13153, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Technologies in Optical Systems; 1315312 (2024) https://doi.org/10.1117/12.3018551
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China
Abstract
Underwater wireless optical communication (UWOC) is an useful way to transmit date in ocean with short distance, because it has high speed. In application, the first challenge for this technology is establishing optical link underwater. There are two schemes to deal with this issue. The first one is enlarging the angle of divergence of the transmitter, and the field of view of receiver, which reduces the requirement to align the UWOC transmitter and receiver. However, the energy loss is increased in the transmission link. The other method needs a pointing, acquisition, and tracking (PAT) system to establish optical link. The angle of divergence of the transmitter is quite small in this way, which is helpful to reduce energy loss in the transmission link. However, in order to make the optical link stable, the receiver should measure the angle of incident of communication light all the time to provide feedback parameters to PAT system. In this work, a method is presented and demonstrated based on four-quadrant detector (QD) for such issue. It shows that the tested error for pitch angle and azimuth angle is less than 1°, as the communication system could still work with 50Kbps communication rate and 2m distance. It has demonstrated the feasibility of the method.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Yuan Peng, Bili Li, Yongqiang Kang, Yunzhou Zhu, Qihang Sun, Zhepeng Huang, and Biao Han "Experimental demonstration of measuring angle of incidence for light into receiver in underwater laser communication system based on four-quadrant detector", Proc. SPIE 13153, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Technologies in Optical Systems, 1315312 (30 April 2024); https://doi.org/10.1117/12.3018551
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KEYWORDS
Receivers
Telecommunications
Transmitters
Sensors
Laser communications
Laser systems engineering
Optical communications
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