Figure 2
From: Backward spoof surface wave in plasmonic metamaterial of ultrathin metallic structure
Simulated EM field and energy flux distribution in a unit-cell of the symmetric CSP waveguide (at βd/π = 0.5).
The distributions of (a) the y component of electric field, (b) the EM energy flux along x direction, (c) the x component of electric field and (d) the z component of magnetic field for different slot structures. The parameters of the slot in (a) or (b) are set from left to right as g = 0.67d and b = 0; g = 0.33d and b = 0; g = 0.67d and b = 0.17d; g = 0.67d and b = 0.34d; g = 0.67d and b = 0.51d; g = 0.67d and b = 0.51d with simplified grooves; while other parameters are the same as that in Fig. 1b. EM power is fed from the left to the right.
