title: Interferometric measurement of fiber strain hysteresis and nonlinearity for sensitivity optimization.
abstract: A simple and reliable fringe-counting method is used to determine the fiber static elastic response in fiber-optic sensors and modulators. Large strain hysteresis and nonlinearity have been observed in the commonly employed configuration of bonding a bare fiber onto a strain element. Jacketed fibers show reduced hysteresis and nonlinearity in their elastic response. Reductions in hysteresis from 23% to 1% of the maximum strain and in the nonlinearity by a factor of 3 have been measured.
authors.forename: V S
authors.initials: VS
authors.lastname: Sudarshanam
authors.forename: K
authors.initials: K
authors.lastname: Srinivasan