Title :
Fibre-optic thermometer using semiconductor-etalon sensor
Author_Institution :
NASA Lewis Research Center, Cleveland, USA
Abstract :
A fibre-optic thermometer is described which uses a thick-film SiC sensing etalon. The etalon´s temperature-dependent phase shift is determined by analysing its spectral reflectance, using an LED and a tunable Michelson interferometer. Temperatures from 20 to 1000°C are measured with better than 0.5 deg C resolution.
Keywords :
fibre optic sensors; light interferometers; thermometers; 20 to 1000°C; LED; fibre-optic thermometer; semiconductor-etalon sensor; spectral reflectance; temperature-dependent phase shift; thick-film SiC; tunable Michelson interferometer;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860163
