Study on transmission characteristics of OAM beam in underwater channel

Xiaoguang Jin; Xinhong Wu; Xiaoli Yin

doi:10.1117/12.3032165

26 July 2024 Study on transmission characteristics of OAM beam in underwater channel

Xiaoguang Jin, Xinhong Wu, Xiaoli Yin

Proceedings Volume 13189, Second Conference on Space, Atmosphere, Marine, and Environmental Optics (SAME 2024); 1318909 (2024) https://doi.org/10.1117/12.3032165
Event: Second Conference on Space, Atmosphere, Marine, and Environmental Optics (SAME 2024), 2024, Hangzhou, China

Abstract

Underwater wireless optical communication (UWOC) based on the orbital angular momentum (OAM) beam has great potential to provide a higher data rate and lower communication latency. When the OAM beam propagates underwater, due to the absorption and scattering (AS) effect, the incident light would be attenuated and diffused, causing the crosstalk between OAM modes. In this paper, the electric field Monte Carlo (EMC) method is used to simulate the AS effect by the optical transmission matrix (TM) model. The intensity and the spiral phase spectrum of the received beam at different propagation distances are studied under the coastal ocean water channel. Furthermore, the detection probability is analyzed after propagating through the coastal ocean water and turbid harbor water channels. The simulation results show that the detection probability of OAM beam propagating in an AS channel decreases linearly with the increase of propagation distance. In coastal ocean water (attenuation coefficient 0.398m^-1), the detection probability decreases to 0.5 at around 10m. In turbid harbor waters (attenuation coefficient of 2.17m^-1) the detection probability decays to 0.5 at around 2m. These results will be beneficial to the design of UWOC-OAM systems.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaoguang Jin, Xinhong Wu, and Xiaoli Yin "Study on transmission characteristics of OAM beam in underwater channel", Proc. SPIE 13189, Second Conference on Space, Atmosphere, Marine, and Environmental Optics (SAME 2024), 1318909 (26 July 2024); https://doi.org/10.1117/12.3032165

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