The Use of Fibre Optic Techniques for Temperature Measurement

Abstract

The subject area of fibre optic sensing is one in which there has been shown a very rapid expansion of interest over the last few years. Many novel techniques are appearing in the literature and some products are available to the industrial user. The background to fibre optic means of temperature sensing and some recent developments will be reviewed in this paper.

<title>Cr:LiSAF fluorescence-lifetime-based fiber optic thermometer and its applications in clinical RF heat treatment</title>

“…Temperature sensitivity = (AtI t) I iT, (1) where t is the fluorescence lifetime; M and AT are increments of the fluorescence lifetime and temperature respectively.…”

Design of virtual instrument for automatic temperature visualization in magnetic fields using LabVIEW in combination with fiber-optical temperature measurement

“…The developed instrument is therefore interoperable with the FoTemp device. FoTemp devices apply a measuring principle, which is based on the encoding of changing temperature to a changing of guided light [3]. These instruments can be used to measure temperature effects on tissue.…”

Er3 Yb3 -codoped Al2O3crystal fibres for high-temperature sensing

“…Among the numerous physical effects, temperature remains one of the most important parameters which is measured both in laboratories and in many industrial processes. Although various devices may be used for this purpose, sensors based on optical fibres have become widely recognized as a convenient and practical tool in remote, inaccessible spaces, in harsh environments where electromagnetic/radiofrequency interference is relatively significant and where accurate measurements are required [1].…”