Optical fiber double Fabry-Perot cavity ultrasonic sensor for partial discharge detection and manufacturing method thereof

The invention relates to an optical fiber double Fabry-Perot cavity ultrasonic sensor for partial discharge detection and a manufacturing method thereof. The optical fiber double Fabry-Perot cavity ultrasonic sensor comprises a light source, an optical fiber 1/2 optical splitter, an optical fiber, an optical fiber coupler, an optical fiber EFPI double Fabry-Perot cavity probe, a double-channel photoelectric detector, a high-speed data acquisition device and a differential denoising algorithm module. The light source is connected with the optical fiber coupler through the optical fiber 1/2 optical splitter, the optical fiber coupler is respectively connected with the optical fiber EFPI double Fabry-Perot cavity probe and the double-channel photoelectric detector, the double-channel photoelectric detector is connected with the high-speed data acquisition device, and the high-speed data acquisition device is connected with the differential denoising algorithm module. Compared with the prior art, the advantages o