Enhanced Velocity Sensitivity in 4-D FMCW LiDAR by Use of Avalanche Photodiode with Cascaded Multiplication Layer. - Zohauddin Ahmad; Sung-Yi Ou; Wei-Chih Su; Po-Shun Wang; Naseem; Jyehong Chen; Yung-Jr Hung; You-Chia Chang; Chia-Chien Wei; Tzyy-Sheng Horng; Jin-Wei Shi (OFC, 2023)