Paper
1 September 1991 Fiber optic Fabry-Perot sensors for high-speed heat transfer measurements
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Proceedings Volume 1504, Fiber-Optic Metrology and Standards; (1991) https://doi.org/10.1117/12.46983
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands
Abstract
The design, construction, operation, and preliminary evaluation of miniature fiber Fabry-Perot (FFP) interferometers used as heat transfer gauges is described. These gauges are being developed for a particular application where heat transfer data is currently obtained using conventional platinum thin-film resistance thermometers. The specifications that the sensors must exceed are: (1) temperature resolution of 25 mK over a 50 K range; (2) temporal response of 10 microsecond(s) ; (3) an ability to operate as a calorimetric heat-transfer gauge. The sensor consists of a short length of single-mode optical fiber (approximately equals 3 mm) to which low- reflectivity coatings have been applied at each end. It is illuminated and interrogated by an arbitrary length of addressing fiber. A laser diode is used as the source and the authors have exploited the facility to frequency modulate the diode in a novel signal processing scheme. To determine the performance of the sensor, short duration heat pulses derived from a pulsed Nd:YAG laser were applied to one end of the FFP. The response time was found to be 8 microsecond(s) and the sensor operation as a calorimeter was verified.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stephen R. Kidd, Pranay G. Sinha, James S. Barton, and Julian D. C. Jones "Fiber optic Fabry-Perot sensors for high-speed heat transfer measurements", Proc. SPIE 1504, Fiber-Optic Metrology and Standards, (1 September 1991); https://doi.org/10.1117/12.46983
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KEYWORDS
Sensors

Heat flux

Interferometers

Fiber optics

Temperature metrology

Fabry–Perot interferometers

Semiconductor lasers

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