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Proceedings Paper

Low coherence tandem interferometry for the measurement of differential length sensing at two widely separated locations
Author(s): Martin D. Smith; William N. MacPherson; Robert R. J. Maier
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Paper Abstract

An all optical fibre based sensing configuration designed to measure the changes in differential length of two independent Fabry-Perot cavities at widely separated locations in an environment where strong temperature gradients may exist is demonstrated. Two Fabry-Perot sensing cavities are formed between the cleaved end of a fibre and a reflective surface. The presented technique is based on low coherence tandem interferometry incorporating high coherence interferometry as a calibration measurement.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89241O (15 October 2013); doi: 10.1117/12.2034272
Show Author Affiliations
Martin D. Smith, Heriot-Watt Univ. (United Kingdom)
William N. MacPherson, Heriot-Watt Univ. (United Kingdom)
Robert R. J. Maier, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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