High-Temperature Sensor Based on Fabry-Perot Interferometer in Microfiber Tip

Zhenshi Chen; Songsong Xiong; Shecheng Gao; Hui Zhang; Lei Wan; Xincheng Huang; Bingsen Huang; Yuanhua Feng; Weiping Liu; Zhaohui Li

doi:10.3390/s18010202

Sensors (Jan 2018)

High-Temperature Sensor Based on Fabry-Perot Interferometer in Microfiber Tip

Zhenshi Chen,
Songsong Xiong,
Shecheng Gao,
Hui Zhang,
Lei Wan,
Xincheng Huang,
Bingsen Huang,
Yuanhua Feng,
Weiping Liu,
Zhaohui Li

Affiliations

Zhenshi Chen: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
Songsong Xiong: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Shecheng Gao: Department of Electronic Engineering, College of Information Science and Techonology, Jinan University, Guangzhou 510632, China
Hui Zhang: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Lei Wan: Institute of Optoelectronic Material and Technology, South China Normal University, Guangzhou 510631, China
Xincheng Huang: Department of Electronic Engineering, College of Information Science and Techonology, Jinan University, Guangzhou 510632, China
Bingsen Huang: Department of Electronic Engineering, College of Information Science and Techonology, Jinan University, Guangzhou 510632, China
Yuanhua Feng: Department of Electronic Engineering, College of Information Science and Techonology, Jinan University, Guangzhou 510632, China
Weiping Liu: Department of Electronic Engineering, College of Information Science and Techonology, Jinan University, Guangzhou 510632, China
Zhaohui Li: State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China

DOI: https://doi.org/10.3390/s18010202
Journal volume & issue: Vol. 18, no. 1
p. 202

Abstract

Read online

A miniaturized tip Fabry-Perot interferometer (tip-FPI) is proposed for high-temperature sensing. It is simply fabricated for the first time by splicing a short length of microfiber (MF) to the cleaved end of a standard single mode fiber (SMF) with precise control of the relative cross section position. Such a MF acts as a Fabry-Perot (FP) cavity and serves as a tip sensor. A change in temperature modifies the length and refractive index of the FP cavity, and then a corresponding change in the reflected interference spectrum can be observed. High temperatures of up to 1000 °C are measured in the experiments, and a high sensitivity of 13.6 pm/°C is achieved. This compact sensor, with tip diameter and length both of tens of microns, is suitable for localized detection, especially in harsh environments.

Published in Sensors

ISSN: 1424-8220 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology
Website: http://www.mdpi.com/journal/sensors

About the journal

Abstract

Keywords