Free space optical communication receiver based on a spatial demultiplexer and a photonic integrated coherent combining circuit
Abstract
Atmospheric turbulences can generate scintillation or beam wandering phenomena that impairs free space optical (FSO) communication. In this paper, we propose and demonstrate a proof-of-concept FSO communication receiver based on a spatial demultiplexer and a photonic integrated circuit coherent combiner. The system collects the light from several Hermite Gauss spatial modes and coherently combine on chip the energy from the different modes into a single output. The FSO receiver is characterized with a wavefront emulator bench that generates arbitrary phase and intensity patterns. The multimode receiver presents a strong resilience to wavefront distortions, compared to a monomode FSO receiver. The system is then used to detect a modulation of the optical beam through a random wavefront profile.
Keywords
Cite
@article{arxiv.2106.09464,
title = {Free space optical communication receiver based on a spatial demultiplexer and a photonic integrated coherent combining circuit},
author = {Vincent Billault and Jerome Bourderionnet and Jean-Paul Mazellier and Luc Leviandier and Patrick Feneyrou and Anaelle Maho and Michel Sotom and Xavier Normandin and Herve Lonjaret and Arnaud Brignon},
journal= {arXiv preprint arXiv:2106.09464},
year = {2021}
}
Comments
8 pages, 7 figures