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.
Kejalakshmy
N
N
School of Engineering and Mathematical Sciences, Northampton Square, London EC1V 0HB, UK.
Agrawal
Arti
A
Aden
Yasin
Y
Leung
D M H
DM
Rahman
B M A
BM
Grattan
K T V
KT