Rigorous Full-Vectorial Solutions of Photonics Nanowires

The full-vectorial H and E -fields and Poynting vector profiles are calculated by using a rigorous full-vectorial formulation for silicon and gold nanowires. This paper reveals that the mode profiles of both circular silicon and gold nanowires are not circular, due to strong index contrast at the core–cladding interfaces. The modes are highly hybrid with all the six components of the electric, and magnetic fields being present along with a strong axial field component. From the analyses, the characteristics of single-mode operation and the vector field profiles of both circular and planar silicon nanowires are presented. The modal properties of zinc-oxide-coated gold nanowires are also presented in this paper.