Demultiplexing OAM beams via Fourier optical convolutional neural network

Jiachi Ye; Haoyan Kang; Hao Wang; Chen Shen; Belal Jahannia; Elham Heidari; Navid Asadizanjani; Mohammad-Ali Miri; Volker J. Sorger; Hamed Dalir

doi:10.1117/12.2682108

26 September 2023 Demultiplexing OAM beams via Fourier optical convolutional neural network

Jiachi Ye, Haoyan Kang, Hao Wang, Chen Shen, Belal Jahannia, Elham Heidari, Navid Asadizanjani, Mohammad-Ali Miri, Volker J. Sorger, Hamed Dalir

Author Affiliations +

Proceedings Volume 12667, Laser Beam Shaping XXIII; 1266706 (2023) https://doi.org/10.1117/12.2682108
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

Here we present an innovative free-space optical (FSO) communication system which is capable of training database in real-time and demultiplex multiplexed spatial structured laser beams such as orbital angular momentum (OAM) beams under varying atmospheric turbulent conditions. The core part of our detection system is heterogeneous convolutional neural network includes an optical 4f system using first Fourier convolution neural network layer driven by kilohertz-fast reprogrammable high-resolution digital micromirror devices (DMDs). This optical-filtering-based convolutional neural network is utilized to realize the training and demultiplexing 4-bit OAM-coded beams under simulated turbulent condition using modified von K´arm´an atmospheric model. The current implementation shows classification accuracy of 89.35% (under weak turbulence) and 38.26% (under strong turbulence).

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiachi Ye, Haoyan Kang, Hao Wang, Chen Shen, Belal Jahannia, Elham Heidari, Navid Asadizanjani, Mohammad-Ali Miri, Volker J. Sorger, and Hamed Dalir "Demultiplexing OAM beams via Fourier optical convolutional neural network", Proc. SPIE 12667, Laser Beam Shaping XXIII, 1266706 (26 September 2023); https://doi.org/10.1117/12.2682108

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available