Study on the performance of polarization maintaining fiber temperature sensor based on tilted fiber grating

A novel functional-type high integration polarization interference fiber temperature sensor based on 45 degrees tilted fiber Bragg grating in-fiber polarizer (TFBG-PIF-TS) is proposed. The accuracy, resolution, stability, linearity and sensitivity of the prototype are tested and compared with PT100, 18B20 as well as polarizing plate based polarization interferometric fiber temperature sensor (PP-PIF-TS). The feasibility of the scheme in the transformer winding temperature monitoring is verified. The results show that the accuracy and resolution of TFBG-PIF-TS reach +/- 0.1 degrees C and 0.01 degrees C respectively, which has higher resolution, better integration and reliability, and has simple structure, strong anti-vibration and anti-electromagnetic interference abilities. Therefore, the proposed scheme can meet the needs of high voltage, strong magnetic field and other passive precise temperature measurement occasions.

Automated summary

The novel fiber temperature sensor offers higher accuracy and resolution, better integration and reliability, suitable for precise temperature measurement in high voltage and strong magnetic field environments.