  We consider infinitely long electromagnetic wave guide filled with a ferrite.
The wave guide has arbitrary but constant cross-section $. We show that Maxwell
equations are equivalent to the Schr\"odinger equation for single electron in
the two-dimensional quantum dot of the form D with account of the Rashba
spin-orbit interaction. The spin-orbit constant is determining by components of
magnetic permeability of the ferrite. The upper component of electron spinor
function corresponds to the z-th component electric field, while the down
component $\chi$ related to the z-th component of magnetic field by relation
(30).
