Title :
Optical Fiber High-Temperature Sensor Based on Dielectric Films Extrinsic Fabry–Pérot Cavity
Author :
Dongwen Lee ; Minghong Yang ; Chujia Huang ; Jixiang Dai
Author_Institution :
Nat. Eng. Lab. for Fiber Opt. Sensing Technol., Wuhan Univ. of Technol., Wuhan, China
Abstract :
In this letter, an optic fiber high-temperature sensor with a low-fineness Fabry-Pérot cavity formed by dielectric films at the end of multimode fiber is proposed and demonstrated. The sensor is proved to be simple in configuration and low cost for component and easy for batch fabrication. Experimental investigation shows that the sensor exhibits a sensitivity of 5.4 × 10-3nm/°C when the ambient temperature changes from 250 °C to 750 °C.
Keywords :
Fabry-Perot interferometers; dielectric materials; fibre optic sensors; optical fibre fabrication; optical films; temperature sensors; ambient temperature; batch fabrication; dielectric films; low-fineness Fabry-Pérot cavity; multimode fiber; optical fiber high-temperature sensor; temperature 250 degC to 750 degC; Aluminum oxide; Optical fiber sensors; Optical fibers; Optical interferometry; Optical variables control; Temperature; Temperature sensors; Fabry??P??rot interferometer; dielectric films; high-temperature sensor; optical fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2346622
