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Proceedings Paper

Absolute strain measurements with multiplexed low-coherence demodulated fiber Fabry-Perot sensors
Author(s): Philipp M. Nellen; H. Pierhofer; Rolf Broennimann; Urs J. Sennhauser
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Paper Abstract

Intrinsic fiber optic Fabry-Perots (FP) adhered to the surface of a cantilever beam are used as strain sensors. Low coherence demodulation with a scanning Michelson interferometer (MI) and interfringe resolution techniques allow absolute interrupt-immune measurements of static longitudinal strains with a resolution of a few microstrains. Low reflecting FPs arranged either in parallel or in series can be multiplexed by giving them a difference in their lengths.

Paper Details

Date Published: 14 September 1994
PDF: 4 pages
Proc. SPIE 2360, Tenth International Conference on Optical Fibre Sensors, (14 September 1994); doi: 10.1117/12.184977
Show Author Affiliations
Philipp M. Nellen, EMPA (Switzerland)
H. Pierhofer, EMPA (Switzerland)
Rolf Broennimann, EMPA (Switzerland)
Urs J. Sennhauser, EMPA (Switzerland)

Published in SPIE Proceedings Vol. 2360:
Tenth International Conference on Optical Fibre Sensors
Brian Culshaw; Julian D. C. Jones, Editor(s)

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