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

Volume

26

Issue

21

fYear

2014

fDate

Nov.1, 1 2014

Firstpage

2107

Lastpage

2110

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2346622

Filename

6881613