Plasmonic waveguiding in a hexagonally ordered metal wire array.
We propose the inclusion of a structured pattern of nanoscale metal wires in a silica fiber to form a symmetric plasmonic waveguide. The surface plasmon polariton modes within the waveguide are studied by varying the wire diameter and spacing. Simulation results show that hybridization of the single-wire mode and the gap plasmon mode can yield a hybrid mode with optimum propagation lengths comparable to those reported for other structures but with better light confinement. The fiber can be easily doped with a gain material to offset the loss so that the resultant waveguide will be useful for integration with electronic circuits at nanometer dimensions.
Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong. zxzhang@ee.cuhk.edu.hk
Zhong-Xiang
ZX
Zhang
Ming-Lie
ML
Hu
Kam Tai
KT
Chan
Ching-Yue
CY
Wang