A WDM 4×28Gbps integrated silicon photonic transmitter driven by 32nm CMOS driver ICs. - Anand Ramaswamy; Jonathan E. Roth; Erik J. Norberg; Robert S. Guzzon; Jae-Hyuk Shin; J. T. Imamura; Brian R. Koch; Daniel K. Sparacin; Gregory A. Fish; Benjamin G. Lee; Renato Rimolo-Donadio; Christian W. Baks; et al. (OFC, 2015)