Propagation of OAM beams through atmospheric turbulence: comparison of simulation and experiment

Miranda van Iersel; HaoLun Wu

doi:10.1117/12.2677640

3 October 2023 Propagation of OAM beams through atmospheric turbulence: comparison of simulation and experiment

Miranda van Iersel, HaoLun Wu

Proceedings Volume 12691, Laser Communication and Propagation through the Atmosphere and Oceans XII; 126910G (2023) https://doi.org/10.1117/12.2677640
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The interest of beams carrying orbital angular momentum (OAM) for free-space optical communication (FSOC) has increased over the years, due to the large number of orthogonal modes which can be used to transmit data at high data rates, and the secure transmission it offers. One of the main concerns in FSOC applications is atmospheric turbulence through which all beams propagate. The atmospheric turbulence is degrading the quality of the laser beam, due to the creation of intensity variances, beam wander, loss of spatial coherence, and OAM cross talk. A wave optics simulation framework is used to model OAM beam propagation through atmospheric turbulence. In these simulations Laguerre-Gaussian (LG) beams are used as beams carrying OAM. The atmospheric turbulence is modeled as phase screens and a split-step algorithm is used to model the beam propagation. LG beams with different mode order are propagated through atmospheric turbulence of different strengths. The results will be compared against experiments performed in the laboratory.

Conference Presentation

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

Citation Download Citation

Miranda van Iersel and HaoLun Wu "Propagation of OAM beams through atmospheric turbulence: comparison of simulation and experiment", Proc. SPIE 12691, Laser Communication and Propagation through the Atmosphere and Oceans XII, 126910G (3 October 2023); https://doi.org/10.1117/12.2677640

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