20×448 Gb/s 56-GBd PM-16QAM transmission with wideband and spectrally-sliced receivers. - Sandro M. Rossi; André L. N. de Souza; Andrea Chiuchiarelli; Valery N. Rozental; Eduardo S. Rosa; Tiago C. Lima; Tatiani Piven; Rodrigo Vincentini; Juliano R. F. Oliveira; Jacklyn D. Reis (OFC, 2016)