A Miniature Fabry–Pérot Interferometer for High Temperature Measurement Using a Double-Core Photonic Crystal Fiber

Author

Yanying Du ; Xueguang Qiao ; Qiangzhou Rong ; Hangzhou Yang ; Dingyi Feng ; Ruohui Wang ; Manli Hu ; Zhongyao Feng

Author_Institution

Dept. of Phys., Northwest Univ., Xi´an, China

Volume

14

Issue

4

fYear

2014

fDate

Apr-14

Firstpage

1069

Lastpage

1073

Abstract

A miniature Fabry-Pérot interferometer is proposed and experimentally demonstrated for high temperature measurement. The device is fabricated by alignment splicing a short section of double-core photonic crystal fiber (DC-PCF) to the lead-in single mode fiber. Due to the optical path difference of reflective light from splicing region and end-face of DC-PCF, a well-defined interference spectrum is obtained based on ~ 72.3 μm-long cavity. Experimental results indicate that the proposed sensor has a considerable temperature sensitivity of 13.9 pm/°C in the measurement range of 30 °C-900 °C. The proposed sensor has advantages of small size and high stability, and so on, making it a good candidate in harsh high temperature environment with limited-space.

Keywords

Fabry-Perot interferometers; fibre optic sensors; holey fibres; photonic crystals; temperature measurement; alignment splicing; double-core photonic crystal fiber; high temperature measurement; lead-in single mode fiber; miniature Fabry-Perot interferometer; optical path difference; reflective light; temperature 30 degC to 900 degC; temperature sensitivity; Interference; Optical fiber sensors; Optical fibers; Optical interferometry; Temperature measurement; Temperature sensors; Fabry–Pérot interferometer; fiber optic sensor; photonic crystal fiber;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2013.2286699

Filename

6642063