A novel functional-type high integration polarization interference fiber temperature sensor based on 45° 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 °C and 0.01 °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.

提出了一种基于45°倾斜光纤布拉格光栅光纤内偏振器（TFBG-PIF-TS）的功能型高集成度偏振干涉光纤温度传感器。测试了原型的精度，分辨率，稳定性，线性和灵敏度，并将其与PT100、18B20以及基于偏振片的偏振干涉式光纤温度传感器（PP-PIF-TS）进行了比较。验证了该方案在变压器绕组温度监测中的可行性。结果表明，TFBG-PIF-TS的精度和分辨率分别达到±0.1°C和0.01°C，具有更高的分辨率，更好的集成度和可靠性，并且结构简单，抗振动和抗电磁干扰能力强。 。因此，所提出的方案可以满足高压的需求，