Propagation velocity modulation and electromagnetic energy concentration of guided wave on corrugated metal surface

Author

Yingran He ; Biao Du

Author_Institution

54th Res. Inst., CETC, Shijiazhuang, China

fYear

2014

fDate

16-23 Aug. 2014

Firstpage

1

Lastpage

4

Abstract

Corrugated metal surface is proposed to modulate the modal properties of surface plasmon polariton (SPP). It is found the propagation velocity of SPP wave can be considerably altered by introducing surface corrugations. Both cases of shallow corrugations and deep corrugations are investigated. The results show that a shallow corrugation can modulate the wave propagation in a weak manner, but a deep corrugation can strongly change the dispersion curve shape and lead to the coexistence of waveguide mode, zero-group-velocity and mode cutoff. These unique properties are utilized to control mode propagation velocity and concentrate electromagnetic energy.

Keywords

curve fitting; electromagnetic wave propagation; polaritons; surface plasmons; waveguides; SPP wave; corrugated metal surface; dispersion curve shape; electromagnetic energy concentration; guided wave; propagation velocity modulation; surface corrugations; surface plasmon polariton; wave propagation; waveguide mode; zero-group-velocity; Corrugated surfaces; Dispersion; Electromagnetics; Films; Metals; Optical surface waves; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

Conference_Location

Beijing

Type

conf

DOI

10.1109/URSIGASS.2014.6929477

Filename

6929477