Dispersion characteristics of surface plasmon polaritons (SPPs) in graphene-chiral-graphene waveguide

被引：20

作者：

Azam, M. ^{[1
]}

Umair, M. ^{[1
]}

Ghaffar, A. ^{[1
]}

Alkanhal, Majeed A. S. ^{[2
]}

Alqahtani, Ali H. ^{[2
,3
]}

Khan, Y. ^{[2
]}

机构：

[1] Univ Agr Faisalabad, Dept Phys, Faisalabad, Pakistan

[2] King Saud Univ, Dept Elect Engn, Riyadh, Saudi Arabia

[3] King Saud Univ, Coll Appl Engn, Dept Elect Engn, Al Muzahimiyah Branch, Riyadh, Saudi Arabia

来源：

WAVES IN RANDOM AND COMPLEX MEDIA | 2021年

关键词：

Graphene; chiral; surface plasmon polaritons; waveguide; dispersion matrix;

D O I：

10.1080/17455030.2021.1902018

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The theoretical analysis of hybrid surface plasmon polaritons in a planar waveguide filled with chiral material surrounded by graphene layers is presented in this manuscript. The Kobo formula is used to calculate the graphene's conductivity and Maxwell's equation in differential form is used to solve the analytical problem. It is demonstrated that graphene's parameters relaxation time as well as chemical potential and chirality strength can be used to modulate the resonance surface plasmon frequencies for the proposed structure. The characteristic curve, normalized propagation constant, attenuation phase constant or propagation loss, propagation length, and normalized field distribution for graphene-chiral-graphene interfaces are examined numerically. The presented work based on plasmonics theory provides new possibilities for the design of more compact nanophotonic devices due to graphene's extra degree of freedom compared to other metals.

引用

页码：134 / 145

页数：12

共 32 条

[1] An optical-sensing modality that exploits Dyakonov-Tamm waves [J].