Optical sensor Processing Unit is a highly integrated optical fiber sensing module. Based on the principle of coherent Rayleigh scattering and Brillouin scattering, the common single-mode optical fiber is used as the sensing medium, which integrates acoustic wave, strain, temperature and attenuation monitoring. Only one optical fiber is needed to simultaneously measure the changes of various physical parameters along the optical fiber. The module has small size, full functions, strong performance, universal communication and data interface, easy integration, and can realize long-distance real-time monitoring of all-round status. This product solves the problem of cross sensitivity between temperature and strain, and provides users with more reliable test results.