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1 August 1991 Interferometric optical fiber sensors for absolute measurement of displacement and strain
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Abstract
Two displacement sensing techniques based on determination of the phase shift induced in an unbalanced interferometer due to laser frequency modulation are described. Experimental results demonstrating the operation of the schemes are presented; optical displacements over a 50 mm range have been recorded with a resolution of 25 microns. Both approaches are suitable for passive remote sensing applications. The authors also discuss the use of this type of sensing approach for the measurement of 'D.C.' parameters, such as quasi-static pressure and structural strain.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan D. Kersey, Timothy A. Berkoff, and Anthony D. Dandridge "Interferometric optical fiber sensors for absolute measurement of displacement and strain", Proc. SPIE 1511, Fiber Optic Sensors: Engineering and Applications, (1 August 1991); https://doi.org/10.1117/12.45977
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