Future large-scale data centers will require higher bandwidth, high density optical interconnects, and the bandwidth (BW) density at the switch front panels can be improved by replacing pluggable transceivers with on-board optics with ASIC integration. To address the future requirements for the high channel count optical connectivity, multicore fiber (MCF) may find its application opportunities in the high bandwidth high density optical interconnects for data centers, since it offers a large scalability of the channel count.