Fig. 3
The permittivity and modes distribution for magnetic component H y and electric component E z . a and b correspond the point A (H 0 = 300, β = 6.94 × 10− 2 k F ) marked in Fig. 2 for symmetric modes, c and d correspond the point B (H 0 = 300, β = 7.81 × 10− 2 k F ) marked in Fig.2 for antisymmetric modes, e and f correspond the point C (H 0 = 300, β = 8.36 × 10− 2 k F ) marked in Fig. 2 for asymmetric modes, and g and h correspond the point D (H 0 = 700, β = 8.07 × 10− 2 k F )