Free space optical communication receiver based on a spatial demultiplexer and a photonic integrated coherent combining circuit

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 comb...

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Bibliographic Details
Published inarXiv.org
Main Authors Billault, Vincent, Bourderionnet, Jerome, Jean-Paul Mazellier, Leviandier, Luc, Feneyrou, Patrick, Anaelle Maho, Sotom, Michel, Normandin, Xavier, Lonjaret, Herve, Brignon, Arnaud
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 04.11.2021
Subjects
Coherence
Communication
Demultiplexers
Emulators
Free-space optical communication
Integrated circuits
Photonics
Physics - Applied Physics
Physics - Optics
Wave fronts
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2106.09464