Demonstration of “Automatic” Turbulence Mitigation of 4 QPSK Channels in a Self-Coherent Free-Space Mode-Division-Multiplexed Link Using a Pilot Beam and Photodetector Array

Huibin Zhou; Hao Song; Xinzhou Su; Yuxiang Duan; Kaiheng Zou; Runzhou Zhang; Moshe Tur; Alan E. Willner

doi:10.1364/OFC.2023.Th3H.1

Optical Fiber Communication Conference (OFC) 2023
Technical Digest Series (Optica Publishing Group, 2023),
paper Th3H.1
•https://doi.org/10.1364/OFC.2023.Th3H.1

Demonstration of “Automatic” Turbulence Mitigation of 4 QPSK Channels in a Self-Coherent Free-Space Mode-Division-Multiplexed Link Using a Pilot Beam and Photodetector Array

Huibin Zhou, Hao Song, Xinzhou Su, Yuxiang Duan, Kaiheng Zou, Runzhou Zhang, Moshe Tur, and Alan E. Willner

Optical Fiber Communication Conference 2023

San Diego California United States
5–9 March 2023
ISBN: 978-1-957171-18-0

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Free Space and Optical Camera Communications (Th3H)

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H. Zhou, H. Song, X. Su, Y. Duan, K. Zou, R. Zhang, M. Tur, and A. E. Willner, "Demonstration of “Automatic” Turbulence Mitigation of 4 QPSK Channels in a Self-Coherent Free-Space Mode-Division-Multiplexed Link Using a Pilot Beam and Photodetector Array," in Optical Fiber Communication Conference (OFC) 2023, Technical Digest Series (Optica Publishing Group, 2023), paper Th3H.1.

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Abstract

We experimentally demonstrate “automatic” turbulence mitigation of a self-coherent FSO MDM link with four 1-Gbaud QPSK channels using a transmitted pilot beam and PD array without power-splitting losses or detector-bandwidth sharing. Results show <3-dB turbulence-induced penalty, as compared to a >16-dB penalty for a conventional LO-based MDM system.

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