title: Dynamic-strain measurement with dual-grating fiber sensor.
abstract: A dual-grating sensor head, which was designed for temperature-insensitive strain measurement, was used to measure fast-varying strain perturbations. Using a Mach-Zehnder interferometer technique, we obtained ~0.1-muepsilon (microstrain) rms resolution with a 200-Hz strain input. The feasibility of measuring a dynamic-strain with a static-strain measuring configuration was also demonstrated.
authors.forename: M
authors.initials: M
authors.lastname: Song
authors.forename: S B
authors.initials: SB
authors.lastname: Lee
authors.forename: S S
authors.initials: SS
authors.lastname: Choi
authors.forename: B
authors.initials: B
authors.lastname: Lee