19-core fiber transmission of 19×100×172-Gb/s SDM-WDM-PDM-QPSK signals at 305Tb/s

Abstract

A novel free-space coupling system combined with a multi-core fiber enables upscaling to a record space-division-multiplexed (SDM) channel number of 19. We achieve 305Tb/s transmission over 10.1 km using 19-SDM, 100-WDM PDM-QPSK signals.