Surface Plasmon Characteristics in Multi-metal-layer Structures and in One-dimensional Metal Grating Structures
Date Issued
2007
Date
2007
Author(s)
Shiao, Jie-Ken
DOI
en-US
Abstract
A surface plasmon polariton (SPP) is an excitation on the boundary of a metal whose oscillations of surface charges produced by exterior electromagnetic waves. The aim of this thesis is to discuss the properties of SPs in the multi-layer structures and in metallic gratings. First, through Davidenko’s method to find the analytical solutions of the multi-layer structures, the dispersion relation of the SPs and its modal fields can be plotted for us to know the subtle variations of SPs by varying the thickness of metals. Then, since the activities of SP are so sensitive to metallic structures, we introduce the finite-difference frequency-domain method to study the interactions between SP and shaped structures. By analysis of the transmission and field distributions, we show how the SP to affect the transmission spectra with different parameters of one-dimensional metallic gratings. Besides, we also calculate the cases of one-dimensional metallic gratings consisting of two kinds of metals to compare with that of only one kind of metal.
Subjects
表面電漿子
多層金屬
一維周期性金屬
穿透特性
Surface Plasmon
Multi-metal-layer Structures
in One-dimensional Metal Grating Structures
Transmission
Type
thesis