  This work analyzes the emission and radiation properties of a single optical
emitter embedded in a graphene-coated subwavelength wire. We discuss the
modifications of the spontaneous emission rate and the radiation efficiency as
a function of the position and orientation of the dipole inside the wire. Our
results show that these quantities can be enhanced by several orders of
magnitude when the emission frequency coincides with one of the resonance
frequencies of the graphene-coated wire. In particular, high-order plasmon
resonances are excited when the emitter is moved from the wire center. The
modifications by varying the orientation of the dipole in the near field
distribution and in the far field intensities are shown.
