300 Gb/s Net-Rate Intra-Datacenter Interconnects with a Silicon Integrated Optical Frequency Comb Modulator

We propose and demonstrate intra-datacenter interconnects based on a silicon optical frequency comb modulator consisting of four cascaded microring modulators. The generated 4×50 Gbaud WDM-PAM4 signals exhibit BERs below 33% HD-FEC threshold after 2-km transmission.