Narrow-linewidth and frequency-agile FMCW laser on the Si3N4 -on-SOI photonic platform

We demonstrate a hybrid-integrated self-injection-locked laser on the Si 3 N 4 -on-SOI platform to generate FMCW signal with 9 kHz linewidth, 2 MHz repetition rate, and high linearity, supporting FMCW-LiDAR with refresh rate up to megapixels per second.