title: Analysis of scattering by a linear chain of spherical inclusions in an optical fiber.
abstract: The scattering by a linear chain of spherical dielectric inclusions, embedded along the axis of an optical fiber, is analyzed using a rigorous integral equation formulation, based on the dyadic Green's function theory. The coupled electric field integral equations are solved by applying the Galerkin technique with Mie-type expansion of the field inside the spheres in terms of spherical waves. The analysis extends the previously studied case of a single spherical inhomogeneity inside a fiber to the multisphere-scattering case, by utilizing the classic translational addition theorems for spherical waves in order to analytically extract the direct-intersphere-coupling coefficients. Results for the transmitted and reflected power, on incidence of the fundamental HE(11) mode, are presented for several cases.
authors.affiliation: Department of Electrical and Computer Engineering, National Technical University of Athens, Greece. jochremm@central.ntua.gr
authors.forename: Ioannis D
authors.initials: ID
authors.lastname: Chremmos
authors.forename: Nikolaos K
authors.initials: NK
authors.lastname: Uzunoglu