Rib waveguide theory by the spectral index method

The rib waveguide in integrated optics, S.Ritchie layered theory of the rib waveguide, P.Kendall variational methods for dielectric waveguides, M.Jones weighted index method for dielectric waveguide analysis, M.Robertson spectral index method - single rib waveguide, P.McIlroy discrete spectral index method for rib waveguides, M.Stern spectral index method - directional coupler, S.Burke generalized spectral index method for rib waveguide analysis, M.Stern rib and channel waveguides - generalized and vector equations, P.Kendall analysis of semiconductor rib waveguides - conclusion, P.Robson.