Comparison of Graphene-Based Transverse Magnetic and Electric Surface Plasmon Modes

Author

Xiao Yong He ; Rui Li

Author_Institution

Sch. of Sci., Henan Univ. of Technol., Zhengzhou, China

Volume

20

Issue

1

fYear

2014

fDate

Jan.-Feb. 2014

Firstpage

62

Lastpage

67

Abstract

Dispersion properties and field distributions of graphene supported transverse magnetic (TM) and transverse electric (TE) surface plasmon (SP) modes in air-graphene-SiO₂-Si structures have been investigated. The results show that graphene-based TM (TE) SPs are bound (lossy) modes, which decay into the air in the range of tens of micrometers (several thousand micrometers). In addition, when the thickness of the SiO₂ layer is in the range of 200-300 nm, the influence of the Si substrate on the dispersion property is significant (negligible) for the TM (TE) modes. Furthermore, the effective indexes of the graphene TM (TE) modes increase with the increase (decrease) of the frequency. Compared with the traditional metal-based structures, graphene-based TM mode exhibits a better confinement but with a larger loss. The presented results are useful for the design of compact graphene-based optoelectronic devices.

Keywords

disperse systems; graphene; silicon; silicon compounds; surface plasmons; C-SiO₂-Si; air-graphene-silicon dioxide-silicon structures; compact graphene-based optoelectronic device; dispersion properties; field distributions; graphene-based transverse electric surface plasmon mode; graphene-based transverse magnetic mode; metal-based structures; size 200 nm to 300 nm; Graphene; Plasmonics; Transverse magnetics; Terahertz; graphene; plasmonics;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2013.2257991

Filename

6509938