Real-time recognition of vortex beams modes through random diffusive at the speed of light

Tong Fu; Gang Luo; Jia Cheng Li; Yuan Chao Geng; Xiao Dong Yuan

doi:10.1117/12.3039080

13 September 2024 Real-time recognition of vortex beams modes through random diffusive at the speed of light

Tong Fu, Gang Luo, Jia Cheng Li, Yuan Chao Geng, Xiao Dong Yuan

Proceedings Volume 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024); 132540Q (2024) https://doi.org/10.1117/12.3039080
Event: Fourth International Conference on Optics and Image Processing (ICOIP 2024), 2024, Chongqing, China

Abstract

Optical vortex beam with orbital angular momentum (OAM) has great potential to increase the capacity of optical communication and information processing in classical and quantum regimes. Nevertheless, important challenges that influence the optical data transmission in free space is the existence of diffusers along the optical path, which causes inevitable information loss during the wave propagation. Numerous algorithms have been proposed successively for identifying the modes of vortex beams propagating through scattering media. However, these methods all require completion on a computer, which is energy-intensive and energy consuming. Here, we propose an all-optical regime for identifying the modes of vortex light fields propagating through scattering media. After training by deep learning, our model can recognize the mode of vortex beam through unknown phase diffusers, demonstrating generalization to new random diffusers that have never been encountered before. Once physically deployed, the entire setup will rapidly identify the modes of vortex light propagating through scattering media at the speed of light, and the entire inference process will consume zero energy except for illumination source. Our research represents a significant step towards highly accurate recognition of vortex light modes propagating through complex scattering media, providing significant guidance for the application of optical communication in complex environments.

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

Citation Download Citation

Tong Fu, Gang Luo, Jia Cheng Li, Yuan Chao Geng, and Xiao Dong Yuan "Real-time recognition of vortex beams modes through random diffusive at the speed of light", Proc. SPIE 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024), 132540Q (13 September 2024); https://doi.org/10.1117/12.3039080

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KEYWORDS

Diffusers

Education and training

Neurons

Phase shift keying

Angular momentum

Modulation

Phase distribution

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