Simplified correlation-domain LiDAR without long delay fiber

Light detection and ranging (LiDAR) measures distance by emitting light onto targets and analyzing reflections. In addition to conventional LiDAR systems based on time-of-flight and frequency-modulated continuous-wave methods, correlation-domain LiDAR has been developed but with some challenges in miniaturization due to the use of a long delay fiber. This study addresses this issue by specifying modulation conditions and removing the delay fiber. We then demonstrate the distance measurement by this simplified correlation-domain LiDAR. This result enhances the potential of integrating correlation-domain LiDAR into various applications.