Scattering of light from waveguide structures with a sinusoidal boundary corrugation modulated by a weak random perturbation

摘要

Abstract: A theoretical method making it possible to describe scattering form waveguide structures with periodically and randomly perturbed boundary is presented. This method is based on the approximate assumption of single scattering and the geometric-optical approach for the propagation of the optical field in the waveguide. Experimental results for photoresist waveguides with holographically recorded sinusoidal gratings show that the theory can correctly predict fundamental features of the scattered field. !13