$4 \times 600$ Gb/s Photonic IC Transmitter and Receiver Modules

InP-based $4\times 600$ Gb/s capable coherent transmitter and receiver assemblies with hybrid integrated SiGe drivers operate at 66GBd, 64QAM over a 200km link. Additionally, a fully packaged pair of modules with real-time DSP ASIC operates error free at 600Gb/s with 69GBd, DP-64QAM.