Development of a strain measurement module using FBG sensor

Abstract

This paper focuses on the module for strain measurement using FBG (Fiber Bragg Grating) sensor. H shaped aluminum plate is used as the base of this module, in thecenter of which FBG sensor protected by the plastic case is located. As well astemperature test, tension and bending test were carried out to evaluate the properties of this module. In addition, the light reflection spectra of Bragg Grating were evaluated by T-matrix method in order to estimate the strain distribution. As a result it is found that it may be used for the strain measurement but spectrum evaluation is needed for the accurate measurement.