The development and calibration of a visible LED-pumped, photoluminescent optical-fiber sensor to measure temperature using the crystal alexandrite is reported. Utilizing the dependence of the fluorescent decay time on temperature, this instrument is accurate to +or-1 degrees C over a range 20-150 degrees C, with a response time of 1 s.>
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Augousti et al. (1988) studied this question.
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