Demonstration of optical fiber probes for high bandwidth thermal measurements in turbomachinery

Steve Kidd, James S. Barton, Julian D C Jones

Research output: Contribution to journalArticle

Abstract

Interferometric temperature sensors comprising a zinc selenide film on the end of a single-mode optical fiber have been incorporated into rugged probes for measurement of gas temperature fluctuations in aerospace turbomachinery test rigs. Two-wavelength illumination provides signals in quadrature for determination of optical phase change of the signal reflected from the film which is exposed to the gas flow. We present ensemble-averaged results showing 15K amplitude gas temperature fluctuations up to 70 kHz with a resolution of 1K.

Original languageEnglish
Pages (from-to)1335-1339
Number of pages5
JournalJournal of Lightwave Technology
Volume13
Issue number7
DOIs
Publication statusPublished - Jul 1995

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