Verbist, JochemJochemVerbistLambrecht, JorisJorisLambrechtMoeneclaey, BartBartMoeneclaeyVan Campenhout, JorisJorisVan CampenhoutYin, XinXinYinBauwelinck, JohanJohanBauwelinckRoelkens, GuntherGuntherRoelkens2021-10-242021-10-242017-121041-1135https://imec-publications.be/handle/20.500.12860/2981540-Gb/s PAM-4 transmission over a 40 km amplifier-less link using a Sub-5V Ge APDJournal articlehttp://ieeexplore.ieee.org/document/8052478/