Field distributions inside fiber gratings

摘要

We have developed a technique to calculate the electric fieldndistributions of a light wave propagating through a fiber grating (FG).nThe technique is based on a transfer matrix method developed fornelectric field calculations in multilayer thin films. We apply thisnmethod to several FG structures of practical interest in optical fibernnetworks based on wavelength-division multiplexing. Two-dimensionalnplots of the average internal power versus the distance along thengrating axis and light frequency are presented. This representationnallows a better understanding of the macroscopic behavior of thesenstructures