High-Capacity and Rain-Resilient Free-Space Optics Link Enabled by Time-Adaptive Probabilistic Shaping

TL;DR

This paper presents a high-capacity free-space optics link that uses time-adaptive probabilistic shaping and SNR prediction to achieve over 450 Gbps transmission with improved rain resilience, demonstrating significant throughput gains.

Contribution

It introduces a novel time-adaptive probabilistic shaping method combined with SNR prediction for rain-resilient free-space optics links, achieving high data rates.

Findings

Over 450 Gbps transmission over 55-m FSO link.

Approximately 40 Gbps average bit-rate gain with adaptive shaping.

Enhanced resilience to rainy weather conditions.

Abstract

Using time-adaptive probabilistic shaped 64QAM driven by a simple SNR prediction algorithm, we demonstrate $>$450 Gbps transmission over a 55-m free-space optics link with enhanced resilience towards rainy weather conditions. Through continuous measurement over 3-hours, we demonstrate $\sim$40~Gbps average bit-rate gain over unsupervised fixed modulation.