112-Gbit/s × 4-lane duobinary-4-PAM for 400GBase. - Lau Frejstrup Suhr; J. J. Vegas Olmos; Bangning Mao; X. Xu; Gordon Ning Liu; Idelfonso Tafur Monroy (ECOC, 2014)

Direct modulation of 56 Gbps duobinary-4-PAM. - Lau Frejstrup Suhr; Juan José Vegas Olmos; Bangning Mao; X. Xu; Gordon Ning Liu; Idelfonso Tafur Monroy (OFC, 2015)