An Active Core Fiber-Optic Temperature Sensor Using an Eu(III)-Doped Sol-Gel Silica Fiber as a Temperature Indicator

Author

Guo, Haiquan ; Tao, Shiquan

Author_Institution

Clean Energy Technol., Mississippi State Univ., Starkville, MS

Volume

7

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

953

Lastpage

954

Abstract

An active core fiber-optic temperature sensor has been developed by using an Eu(III)-doped sol-gel silica fiber as a temperature indicator and has been tested for sensing temperature in the range from 80 degC to 500 degC. The fluorescence of Eu(III) doped inside the sol-gel silica fiber was excited with a simple LED with peak wavelength at 420 nm and the fluorescence intensity was recorded as a sensing signal. The fluorescence intensity decreases with the increase of temperature. In the temperature range from 140 degC to 300 degC, the attenuation of the fluorescence intensity of the fiber-optic sensor in decibel has a linear relationship with temperature

Keywords

europium; fibre optic sensors; sol-gel processing; temperature sensors; 140 to 300 C; 420 nm; 80 to 500 C; active core fiber-optic temperature sensor; fluorescence intensity; sol-gel silica fiber; temperature indicator; Ceramics; Chemical sensors; Fluorescence; Furnaces; Optical fiber sensors; Optical fiber testing; Optical fibers; Silicon compounds; Temperature distribution; Temperature sensors; Eu(III) fluorescence; fiber-optic sensor; sol-gel silica; temperature sensor;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2007.896557

Filename

4162468