Dual M-Layers Avalanche Photodiodes with Extremely Wide Dynamic Ranges and Ultra-High Bandwidth-Responsivity Product Performances in FMCW Lidar Systems

Dual multiplication-layers APDs with large bandwidth-responsivity product (460GHz-A/W), saturation-current (>10mA), and IF-power (+4.5dBm) are demonstrated in self-heterodyne FWCW lidar systems with ~285% modulation depths. Constructed images show 9.5dB larger SNRs than that of p-i-n PD.