High-capacity and rain-resilient free-space optics link enabled by time-adaptive probabilistic shaping

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 ∼40 Gbps average bit-rate gain over unsupervised fixed modulation.