Figure 3. Simulated (solid lines) and analytically calculated (dots) enhancement factor G = T^slab/T^vac for transfer distance d = 16 cm and a slab with isotropic μ = [μ_N μ_N μ_N], anisotropic μ = [μ_T μ_T μ_N], and indefinite μ = [1 1 μ_N] and μ = [μ_T μ_T 1].

Insets: Re(H₂) for the isotropic slab, revealing anti-symmetric and symmetric modes excited at the lower and higher-frequency enhancement peaks.