Augousti, A., Grattan, K. and Palmer, A. (1987) A laser pumped temperature sensor using the fluorescent decay time of alexandrite. Journal of Lightwave Technology, 5(6), pp. 759-762. ISSN (print) 0733-8724
Official URL: http://dx.doi.org/10.1109/JLT.1987.1075565
Abstract
In this work a simple intensity-independent fiber-optic temperature sensor using alexandrite crystal was constructed. The sensor uses the change in the characteristics of the fluorescence of the material to sense the parameter required and operates using light from an electrooptically modulated He-Ne laser at 633 nm. Microprocessor control and signal processing is used to achieve an accuracy of\sim \pm1\degC with a 3-s response.
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