Correct investigation of the statistic irregularities of integrated optical waveguides with the use of the waveguide light scattering

The phenomenon of the waveguide mode scattering in the irregular planar optical waveguide is investigated. The solution of the direct problem is fined with the help of the theory of perturbations. The inverse waveguide scattering problem consists in restoring of autocovariance function and determination of irregularities' parameters by the measuring data of scattering diagram in the far zone. The computer simulation allow approving, that our method permits to receive an approximate correct solution of the inverse problem with the rms error of restoring of the given autocovariance functions no more than 35% in the presence of high real noise (for SNR ≥ 1). The statistic parameters of irregularities in this case are determined with the error less than 15-30 %. © 2004 by Astro Ltd.