Fiber-Optic Thermometer Using Thermal Radiation and Thermally Excited Luminescence

Author

Katsumata, T. ; Morita, K. ; Aizawa, H. ; Komuro, S. ; Morikawa, T.

Author_Institution

Sensor Photonics Res. Center, Toyo Univ., Saitama

fYear

2006

Firstpage

1894

Lastpage

1898

Abstract

Thermally excited visible light luminescence is observed from SiO ₂ glass doped with rare-earth elements. Thermal radiation similar to the black body radiation was observed in the SiO₂doped with Sc, Y, La, Ce, Pr, Eu, Tb, Lu, Gd, Sm. Peak intensities of radiations from these sensor materials increase sensitively with temperature. Intensity ratio at different wavelengths is found to be suitable for the temperature measurement. Thermal activation energy of these elements is relatively larger than those of thermally excited f-f transitions seen in Er, Tm, Ho, Nd, Yb and Dy doped SiO₂. Thermal radiation from rare-earth doped SiO₂ is potentially applicable as a sensor material in the fiber-optic thermal radiation thermometer

Keywords

cerium; europium; fibre optic sensors; gadolinium; lanthanum; lutetium; optical glass; photoluminescence; praseodymium; samarium; scandium; silicon compounds; spectral methods of temperature measurement; terbium; thermoluminescence; thermometers; yttrium; SiO₂: Sc,Y,La,Ce,Pr,Eu,Tb,Lu,Gd,Sm; fiber-optic thermometer; rare-earth doped glass; sensor materials; thermal activation energy; thermal radiation; thermally-excited visible light luminescence; Erbium; Fluorescence; Luminescence; Neodymium; Optical fiber devices; Optical fiber sensors; Powders; Temperature measurement; Temperature sensors; Thermal sensors; Thermal radiation; optical fiber; rare-earth metals; thermally excited luminescence; thermometer;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE-ICASE, 2006. International Joint Conference

Conference_Location

Busan

Print_ISBN

89-950038-4-7

Electronic_ISBN

89-950038-5-5

Type

conf

DOI

10.1109/SICE.2006.315279

Filename

4108994