A 57.2-Gb/s PAM4 Driver for a Segmented Silicon-Photonics Mach-Zehnder Modulator with Extinction Ratio >9-dB in 45-nm RF-SOI CMOS Technology. - Qiang Fu; Min Tan 004; Dezhi Xing; Sizhu Shao; Zhipeng Hu; Junbo Feng (ISCAS, 2021)