  In our work we investigate the propagation of optical modes in nanoscale
hybrid plasmonic waveguides. Frequency domain Maxwell equations based
simulations are implemented to study properties of mixed modes in 3D. The
results of our analysis are applied to design an advanced hybrid waveguide with
useful characteristics. It is demonstrated here how to couple two edge plasmons
with a waveguide mode to form a hybrid waveguide well tuned for applications in
the field of electro-optical transistors (modulators). A mixed polarization
state of edge plasmons allows them to couple with a horizontally polarized (TE)
optical mode (which is not possible for usual surface plasmons) and open the
way to polarization independent plasmonic modulators.
