Title :
Interferometric stain measurement by arbitrarily configured surface-mounted, optical fibers
Author :
Sirkis, James S. ; Haslach, Henry W., Jr.
Author_Institution :
Dept. of Mech. Eng., Maryland Univ., College Park, MD, USA
fDate :
10/1/1990 12:00:00 AM
Abstract :
The phase change of light traveling in a single-mode, arbitrarily configured optical fiber when the fiber is subjected to an arbitrary strain field is described by an integral equation. Assumptions concerning strain transfer from the strained body to a surface mounted optical-fiber sensor are experimentally verified. The general mathematical description is applied to two interferometric optical-fiber strain sensor geometries and is verified by experiment. The lack of precise data about the mechanical and optical material properties of the fiber is circumvented through calibration. Extensions of this model to both embedded fibers and nonlinear fiber response are discussed
Keywords :
calibration; fibre optic sensors; integral equations; light interferometry; strain measurement; arbitrary strain field; calibration; embedded fibers; fibre optic strain sensors; integral equation; interferometric optical-fiber strain sensor geometries; mechanical fibre properties; nonlinear fiber response; optical fibers; optical material properties; phase change; strain transfer; strained body; surface mounted optical-fiber sensor; Capacitive sensors; Fiber nonlinear optics; Integral equations; Mechanical sensors; Nonlinear optics; Optical fiber sensors; Optical fibers; Optical interferometry; Optical sensors; Sensor phenomena and characterization;
Journal_Title :
Lightwave Technology, Journal of
