1. “FLCS-PON : a 100 Gbit/s flexible passive optical network: concepts and field trial”. Borkowski R, Straub M, Ou Y, Lefevre Y, Jelić ŽL, Lanneer W, Kaneda N, Mahadevan A, Hueckstaedt V, van Veen D, Houtsma V, Coomans W, Bonk R, Maes J, Journal Of Lightwave Technology 39, 5314 (2021).   http://doi.org/10.1109/JLT.2021.3102383