High-temperature fiber-optic Fabry-Perot interferometric sensors

Wenhui Ding; Yi Jiang; Ran Gao; Yuewu Liu

doi:10.1063/1.4919409

High-temperature fiber-optic Fabry-Perot interferometric sensors

Rev Sci Instrum. 2015 May;86(5):055001. doi: 10.1063/1.4919409.

Authors

Wenhui Ding¹, Yi Jiang¹, Ran Gao¹, Yuewu Liu²

Affiliations

¹ School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
² Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Science, Beijing 100190, China.

PMID: 26026548
DOI: 10.1063/1.4919409

Abstract

A photonic crystal fiber (PCF) based high-temperature fiber-optic sensor is proposed and experimentally demonstrated. The sensor head is a Fabry-Perot cavity manufactured with a short section of endless single-mode photonic crystal fiber (ESM PCF). The interferometric spectrum of the Fabry-Perot interferometer is collected by a charge coupled device linear array based micro spectrometer. A high-resolution demodulation algorithm is used to interrogate the peak wavelengths. Experimental results show that the temperature range of 1200 °C and the temperature resolution of 1 °C are achieved.