Coupling and signal propagation model of multimode waveguides with rough core-cladding interfaces

Abstract

Accurate modelling of signal propagation on optical interconnects is very important to improve and speed up the progress of integrating optical interconnections into the conventional manufacturing process of electrical-optical layouts. In this paper a model is introduced which represents the coupling of optical power from a laser diode into a dielectric waveguide with a rectangular cross section. The model is based on the mode matching method. The same model is used to represent the coupling between different straight waveguides in order to simulate signal propagation by applying the time dependent coupled power theory.