Open AccessDistributed strain measurements using fiber Bragg gratings in small-diameter optical fiber and low-coherence reflectometry
Author(s) -
Dragan Ćorić,
Marco Lai,
J. Botsis,
Aiping Luo,
H.G. Limberger
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.026484
Subject(s) - materials science , fiber bragg grating , optics , phosfos , reflectometry , optical fiber , graded index fiber , photonic crystal fiber , plastic optical fiber , long period fiber grating , fiber optic sensor , micrometer , all silica fiber , polarization maintaining optical fiber , dispersion shifted fiber , optoelectronics , physics , time domain , computer science , computer vision
Optical low coherence reflectometry and fiber Bragg gratings written in small diameter (50 micrometer) optical fibers were used for measurements of non-homogenous internal strain fields inside an epoxy specimen with sub-grating length resolution. The results were compared with measurements using Fiber Bragg gratings in standard size (125 micrometer) single mode fibers and show that smaller fibers are less intrusive at stress heterogeneities.