Abstract:With the continuous expansion of application scenarios and measuring range of laser vibrometer, its calibration becomes more and more important. However, according to the current calibration standard of vibrometer, the whole machine calibration under high frequency and high speed environment cannot be realized, so it is urgent to improve the calibration method in this respect. In recent years, researchers have used non-mechanically modulated light in the calibration and testing of vibrometers, built theoretical models and obtained calibration test data. This paper analyzes these theoretical models and experimental data, classifies relevant methods according to different optical modulation generation positions and core modulation devices, and introduces their working principles, system structure and main parameters. It then compares and analyzes the calibration functions and application scope of different methods, and finally looks forward to the development potential and research direction of relevant methods. It provides a reference for further research on the calibration technology of vibrometer.