Ultrahigh Sensitive Temperature Sensor Based on Fabry–Pérot Interference Assisted by a Graphene Diaphragm

Author

Ling Li ; Zhongyao Feng ; Xueguang Qiao ; Hangzhou Yang ; Ruohui Wang ; Dan Su ; Yupeng Wang ; Weijia Bao ; Jiacheng Li ; Zhihua Shao ; Manli Hu

Author_Institution

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

Volume

15

Issue

1

fYear

2015

fDate

Jan. 2015

Firstpage

505

Lastpage

509

Abstract

A miniature Fabry-Pérot interferometer is proposed and experimentally demonstrated for temperature measurement. The cavity of the interferometer is a small air gap between the end-face of a single-mode fiber and an ultrathin graphene. A well-defined interference spectrum is obtained, and the dip wavelengths are employed to demonstrate the temperature change. Due to the smart intrinsic characteristics of the graphene film, the proposed device can measure the temperature up to 1008°C, and shows an ultrahigh sensitivity of 1.56 and 1.87 nm/°C at the temperature range of 500°C-510°C and 1000°C-1008°C, respectively, making it a good candidate for high-temperature monitoring in the harsh environment.

Keywords

Fabry-Perot interferometers; diaphragms; fibre optic sensors; graphene; temperature measurement; temperature sensors; thin film sensors; Fabry-Perot interference; Fabry-Perot interferometer; air gap; graphene diaphragm; harsh environment; high-temperature monitoring; interference spectrum; single mode fiber; smart intrinsic characteristics; temperature 1000 degC to 1008 degC; temperature 500 degC to 510 degC; temperature measurement; ultrahigh sensitive temperature sensor; ultrathin graphene film; Graphene; Optical fiber sensors; Optical fibers; Sensitivity; Temperature measurement; Temperature sensors; Fiber-optic sensors; fiber interferometer; graphene; high temperature;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2014.2361174

Filename

6914538