We study the impact of CO 2 absorption on hollow-core fibre transmission. Using spectral pre-equalisation, we digitally post-compensate gas-line absorption and show a 5.5 dB reduction in Q-factor penalty, outperforming a 383-tap equaliser by 1.3 dB.
Cite
@article{arxiv.2602.09668,
title = {Gas Line Absorption Mitigation in Hollow-Core Fibre using Spectral Pre-Equalisation},
author = {Eric Sillekens and Ronit Sohanpal},
journal= {arXiv preprint arXiv:2602.09668},
year = {2026}
}