High-temperature sensor based on an abrupt-taper Michelson interferometer in single-mode fiber

Le Xu; Lan Jiang; Sumei Wang; Benye Li; Yongfeng Lu

doi:10.1364/AO.52.002038

High-temperature sensor based on an abrupt-taper Michelson interferometer in single-mode fiber

Appl Opt. 2013 Apr 1;52(10):2038-41. doi: 10.1364/AO.52.002038.

Authors

Le Xu¹, Lan Jiang, Sumei Wang, Benye Li, Yongfeng Lu

Affiliation

¹ NanoManufacturing Fundamental Research Joint Laboratory of National Science Foundation of China, School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China.

PMID: 23545957
DOI: 10.1364/AO.52.002038

Abstract

This study proposes a high-temperature sensor based on an abrupt fiber-taper Michelson interferometer (FTMI) in single-mode fiber fabricated by a fiber-taper machine and electric-arc discharge. The proposed FTMI is applied to measure temperature and refractive index (RI). A high temperature sensitivity of 118.6 pm/°C is obtained in the temperature range of 500°C-800°C. The wavelength variation is only -0.335 nm for the maximum attenuation peak, with the external RI changed from 1.333 to 1.3902, which is desirable for high-temperature sensing to eliminate the cross sensitivity to RI.