Spatial characterization of fiber Bragg grating structures using transversal pressure

A technique for low cost and high precision characterization of fiber Bragg gratings based structures, using transversal pressure, is presented. It is based on the analysis of the amplitude and wavelength changes of the structure reflection spectrum, while being precisely pressed by an electromechanically actuated arm. The theory and the experimental results, which are in good agreement with the expected ones, are also presented.