Characterization of silicon nanowire by use of full-vectorial finite element method.
We have carried out a rigorous H-field-based full-vectorial modal analysis and used it to characterize, more accurately, the abrupt dielectric discontinuity of a high index contrast optical waveguide. The full-vectorial H and E fields and the Poynting vector profiles are described in detail. It has been shown through this work that the mode profile of a circular silicon nanowire is not circular and also contains a strong axial field component. The single-mode operation, vector field profiles, modal hybridness, modal ellipticity, and group velocity dispersion of this silicon nanowire are also presented.
School of Engineering and Mathematical Sciences, Northampton Square, London EC1V 0HB, UK.
N
N
Kejalakshmy
Arti
A
Agrawal
Yasin
Y
Aden
D M H
DM
Leung
B M A
BM
Rahman
K T V
KT
Grattan