Frequency Modulated Continuous Wave (FMCW) earning a significant breakthrough in LiDAR’s engineering. FMCW can make Photonic Built-in Circuit achievable. Many much more benefits brought by FMCW, together with value reduction, conference eye-protection criteria, interference-free of charge from other LiDAR programs and light sources, for a longer time vary, bigger precision, increased sensitivity, and many others.