Alcohol-filled side-hole fiber Sagnac interferometer for temperature measurement

作者：Xin, Yi; Dong, Xinyong^*; Meng, Qingqiang; Qi, Fei; Zhao, Chun-Liu

来源：Sensors and Actuators A: Physical , 2013, 193: 182-185.

DOI：10.1016/j.sna.2013.01.042

• Optical fiber sensors
• Fiber Sagnac interferometers
• Side-hole fibers
• Temperature measurement

A temperature sensor with an alcohol-filled side-hole fiber (SHF) based Sagnac interferometer is first proposed and experimentally demonstrated. Due to the temperature-dependent refractive index of the alcohol liquid filled in the air holes of the SHF, interference pattern of the Sagnac interferometer shifts with temperature variation. Sensitivity of 86.8 pm/degrees C is achieved, which is about eight times higher than that of a fiber Bragg grating sensor.

• 出版日期2013-4-15
• 单位中国计量大学