Simulation of Transmission Spectra of Bragg Gratings Deformed by Inhomogeneous Acoustic Wavefront

Abstract

Transmission of a shock wavefront through a Bragg grating is considered. The results of simulation of the reflection spectrum of a fiber-optic Bragg sensor subjected to non-uniform deformation are presented. It is shown that in the general case this spectrum is a result of interference of light reflected from the deformed and undeformed parts of the sensor.