
(a) Modal dispersion curve for the fundamental symmetric mode of a 2 μm wide ridge in Si 


(b) Modal dispersion curve for the fundamental antisymmetric mode of a 2 μm wide ridge in Si 

Figure 10: Comparison of modal dispersion curves obtained for the (a) symmetric and (b) antisymmetric ridge modes shows good agreement between the ANSYS simulations and MATLAB computations. Note that the yaxes in these plots have different scales. 
