We demonstrate OESCL-band same-wavelength bi-directional transmission over 60 km HCF with 42.5 THz bandwidth, achieving GMIs comparable with the highest unidirectional SMF data-rates in both directions, with an aggregate of 423.7 + 426.5 Tb/s.
@article{arxiv.2605.04924,
title = {423.7 + 426.5 Tb/s GMI Bi-Directional HCF Transmission},
author = {Jiaqian Yang and Romulo Aparecido and Eric Sillekens and Ronit Sohanpal and Mindaugas Jarmolovičius and Zelin Gan and Yang Hong and Morteza Kamalian-Kopae and Abdallah Ali and Shahab Bakhtiari Gorajoobi and Ruben S. Luís and Daniele Orsuti and Aleksandr Donodin and Vitaly Mikhailov and Jiawei Luo and David J. DiGiovanni and Nicolas Fontaine and Lauren Dallachiesa and Mikael Mazur and Roland Ryf and Haoshuo Chen and David Neilson and Ian D. Phillips and Wladek Forysiak and Sergei K. Turitsyn and Hideaki Furukawa and Jamie Gaudette and David J. Richardson and Benjamin J. Puttnam and Robert I. Killey and Polina Bayvel},
journal= {arXiv preprint arXiv:2605.04924},
year = {2026}
}