On Geometric Shaping for 400 Gbps IM-DD Links with Laser Intensity Noise
arXiv:2504.17433
Abstract
We propose geometric shaping for IM-DD links dominated by relative intensity noise (RIN). For 400 Gbps links, our geometrically-shaped constellations result in error probability improvements that relaxes the RIN laser design by 3 dB.
Presented at OFC 2025