Table 2: Constituent plate mode coefficients and propagation constants for the two cases identified in Figure 4. is classified as the fundamental symmetric ridge mode and is classified as the fundamental antisymmetric ridge mode.

Mode coefficients Symmetric (L1) 0.7071 Symmetric (SH0) 0.7071 Antisymmetric (F1) 1.5997 0 Antisymmetric 0 Antisymmetric 0 Symmetric 0.0017