Title :
The Use of Yttria-Alumino-Silicate Bismuth Doped Fibers for Temperature Sensing
Author :
Ramirez-Granados, D. ; Barmenkov, Y. ; Kir´yanov, A. ; Aboites, V. ; Paul, M. ; Halder, A. ; Das, S. ; Dhar, A. ; Bhadra, S.
Author_Institution :
Centro de Investig. en Opt., Leon, Mexico
Abstract :
Yttria-alumino-silicate fibers heavily doped with bismuth (BI) are investigated for fluorescence temperature sensing within the interval 25°C...500°C at 750-nm (LED) excitation. High doping with Bi which resulted in a high concentration of Bi active (fluorescing) centers, is shown to permit the use of short pieces of the fibers as “point” sensors, which is advantageous for applications. Theoretical backgrounds of three commonly utilized sensing techniques, based on measuring fluorescence intensity ratio, fluorescence lifetime, and frequency-domain referencing, are developed and compared, aiming for effective temperature sensing using these fibers.
Keywords :
aluminium compounds; bismuth; doping profiles; fibre optic sensors; fluorescence; silicon compounds; temperature sensors; yttrium compounds; Bi active centers; Y2O3-Al2O3-SiO2-Bi2O3; fluorescence intensity ratio; fluorescence lifetime; fluorescence temperature sensing; frequency-domain referencing; wavelength 750 nm; yttria-alumino-silicate bismuth doped fibers; Absorption; Bismuth; Finite impulse response filters; Temperature; Temperature measurement; Temperature sensors; Bismuth-doped fiber; Fiber temperature sensor; bismuth (Bi)-doped fiber; fluorescence-intensity ratio; fluorescenceintensity ratio; frequency-domain lifetime referencing; homogeneous up-conversion; time-domain fluorescence lifetime;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2447937
