Vectorial wave analysis of optical waveguides with rectangular cross-section using equivalent network approach

The equivalent network approach is described for the analysis of optical waveguides with rectangular cross-section. A network representation is derived by taking the TE-TM coupling and the discrete-continuous spectrum coupling at the sides of the waveguide into account. The results of the vectorial wave analysis using this simple equivalent network agree well with those of the collocation method and of the finite-element method.