| Autor: |
Billault V, Bourderionnet J, Mazellier JP, Leviandier L, Feneyrou P, Maho A, Sotom M, Normandin X, Lonjaret H, Brignon A |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2021 Oct 11; Vol. 29 (21), pp. 33134-33143. |
| DOI: |
10.1364/OE.433087 |
| Abstrakt: |
Atmospheric turbulence 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 receiver 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 an analog modulation of an optical beam through a random wavefront profile to mimic the transmission of a signal on a degraded optical link. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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