The use of gratings written in tin-doped silica fibres as a thermometer for high-temperature applications is described. Measurements up to ∼800°C show a significant advantage over conventional fibre gratings. A considerable blue-shift has been observed at high temperatures. If corrections for blue-shift are taken into account, the errors are smaller than ∼2°C.
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Gilberto Brambilla (2002) studied this question.
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