Title :
Fiber optic Fabry-Perot strain gauge
Author :
Valis, Tomas ; Hogg, Dayle ; Measures, Raymond M.
Author_Institution :
Inst. for Aerosp. Studies, Toronto Univ., Ont., Canada
fDate :
3/1/1990 12:00:00 AM
Abstract :
A local all-fiber Fabry-Perot interferometric strain sensor is reported. The device makes use of a simple semireflective fusion splice technique and is operated in reflection mode. Five sensors of gauge lengths of approximately 10 mm were fabricated and adhered to the surface of a cantilever beam. The phase-strain sensitivity, Delta phi / Delta L, was measured to be 2.24+or-0.07*10/sup 7/ m/sup -1/ ( lambda =632.8 nm) and found to be symmetric with respect to tension and compression.<>
Keywords :
fibre optic sensors; light interferometers; strain gauges; cantilever beam; compression; fibre optic Fabry-Perot strain gauge; gauge lengths; local all-fiber Fabry-Perot interferometric strain sensor; phase-strain sensitivity; reflection mode; semireflective fusion splice technique; tension; Capacitive sensors; Fabry-Perot; Optical fiber couplers; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical interferometry; Optical reflection; Optical sensors; Strain measurement;
Journal_Title :
Photonics Technology Letters, IEEE
