• Investigation of 60 Gb/s 4-PAM using an 850 nm VCSEL and multimode fiberCastro, Jose Manuel; Pimpinella, Rick; Kose, Bulent; Andrekson, Peter AvoJournal of lightwave technology2016 / p. 3825-3836 : ill https://doi.org/10.1109/JLT.2016.2549539