Title :
Temperature measurement using thermal radiation from SiO/sub 2/ doped with rare-earth elements
Author :
Katsumata, T. ; Iguchi, T. ; Aizawa, H. ; Komuro, S. ; Morikawa, T.
Author_Institution :
Sensor Photonics Res. Center, Toyo Univ., Saitama, Japan
Abstract :
Thermal radiation from SiO/sub 2/ fibers doped with rare-earth elements were studied for a fiber-optic thermometer application at high temperatures. Thermal radiation similar to black body radiation was observed in the visible light region from SiO/sub 2/ fibers doped with Y. Thermally excited visible light radiation peaks due to f-f transitions of rare-earth ions were clearly observed in the SiO/sub 2/ fibers doped with Er. Temperature dependence of the thermal radiation intensity of the rare-earth doped SiO/sub 2/ fiber is potentially useful for temperature measurement in the high temperature region above about 900 K.
Keywords :
erbium; fibre optic sensors; heat radiation; silicon compounds; spectral methods of temperature measurement; thermometers; yttrium; SiO/sub 2/:Er; SiO/sub 2/:Y; black body radiation; f-f transition; fiber-optic thermometer; high temperature region; rare-earth doped SiO/sub 2/ fiber; rare-earth elements; rare-earth ion; temperature measurement; thermal radiation; visible light region;
Conference_Titel :
SICE 2004 Annual Conference
Conference_Location :
Sapporo
Print_ISBN :
4-907764-22-7
