Single Lane Beyond 400 Gbit/s Optical Direct Detection Based on a Sidewall-doped Ge-Si Photodetector - Hu, Xiao; Wu, Dingyi; Liu, Ye; Liu, Min; Liu, Jia; Zhang, Hongguang; Zhang, Yuguang; Chen, Daigao; Wang, Lei; Xiao, Xi; Yu, Shaohua (2022 European Conference on Optical Communication (ECOC), Optical Communication (ECOC), 2022 European Conference on, 2022)