Low coherence tandem interferometry for the measurement of differential length sensing at two widely separated locations

Martin D. Smith; William N. MacPherson; Robert R. J. Maier

doi:10.1117/12.2034272

15 October 2013 Low coherence tandem interferometry for the measurement of differential length sensing at two widely separated locations

Martin D. Smith, William N. MacPherson, Robert R. J. Maier

Author Affiliations +

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89241O (2013) https://doi.org/10.1117/12.2034272
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

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.

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Martin D. Smith, William N. MacPherson, and Robert R. J. Maier "Low coherence tandem interferometry for the measurement of differential length sensing at two widely separated locations", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89241O (15 October 2013); https://doi.org/10.1117/12.2034272

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