Model of Plasmonic Waveguide in CST

Dear members of edaboard society,

During the simulation of Plasmonic waveguide in CST i've faced result, which i barely can understand. My structure consist of a waveguide (dielectric with

= 1) and thin layers of silver (Johnson) on top and bottom. I can see the modes which are propagating in the waveguide and evanescent in the metal, but i"m expecting to have more intensity of the field on the boarders dielectric - metal. Could you please take a loot on the pictures that i've attached and give your opinion, is it correct or not?
Thanks in advance!