A fiber optic probe for gas total temperature measurement in turbomachinery

TitleA fiber optic probe for gas total temperature measurement in turbomachinery
Publication TypeJournal Article
Year of Publication1995
AuthorsKidd, S. R., Barton J. S., Meredith Paul, Jones J. D. C., Cherrett M. A., and Chana K. S.
JournalJournal Of Turbomachinery-Transactions Of The Asme
Volume117
Issue4
Pagination635–641
AbstractThis paper describes the design, operation, construction, and demonstration of a new type of high-bandwidth unsteady temperature sensor based on fiber optics, and capable of operating in a high-speed multistage research compressor with flow representative of jet engine conditions. The sensing element is an optical coating of zinc selenide deposited on the end of an optical fiber. During evaluation in aerodynamic resting, a 1 K gas temperature resolution was demonstrated at 9.6 kHz and an upper bandwidth limit of 36 kHz achieved.