Free space optical link demonstration using multi-plane light conversion turbulence mitigation

Antonin Billaud; Adeline Orieux; Fausto Gomez Agis; Kassem Saab; Stephane Bernard; Thibault Michel; David Allioux; Olivier Pinel; Guillaume Labroille

doi:10.1117/12.2611093

1 April 2022 Free space optical link demonstration using multi-plane light conversion turbulence mitigation

Antonin Billaud, Adeline Orieux, Fausto Gomez Agis, Kassem Saab, Stephane Bernard, Thibault Michel, David Allioux, Olivier Pinel, Guillaume Labroille

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Proceedings Volume PC11993, Free-Space Laser Communications XXXIV; PC1199302 (2022) https://doi.org/10.1117/12.2611093
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

We demonstrate turbulence mitigation in a free-space optical link without adaptive optics. A module consisting of an 8-mode Multi-Plane Light Conversion (MPLC) device connected to a photonic integrated chip (PIC) collects a perturbed beam and converts it into a fundamental mode propagating in a standard single-mode fiber (SMF). Module is tested on a 200-meter optical link at 1550 nm under different D/r0 conditions. Results are compared to simulations and laboratory experiments using calibrated turbulent phase plates. We show increased coupling efficiency and lower fading compared to SMF coupling, demonstrating that MPLC and PIC are a viable turbulence mitigation option.

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Antonin Billaud, Adeline Orieux, Fausto Gomez Agis, Kassem Saab, Stephane Bernard, Thibault Michel, David Allioux, Olivier Pinel, and Guillaume Labroille "Free space optical link demonstration using multi-plane light conversion turbulence mitigation", Proc. SPIE PC11993, Free-Space Laser Communications XXXIV, PC1199302 (1 April 2022); https://doi.org/10.1117/12.2611093

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KEYWORDS

Turbulence

Free space optics

Single mode fibers

Free space

Photonic integrated circuits

Integrated optics

Adaptive optics

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