Analytical model for plasmon modes in graphene-coated nanowire

被引:134
作者
Gao, Yixiao [1 ,2 ]
Ren, Guobin [1 ,2 ]
Zhu, Bofeng [1 ,2 ]
Liu, Huaiqing [1 ,2 ]
Lian, Yudong [1 ,2 ]
Jian, Shuisheng [1 ,2 ]
机构
[1] Beijing Jiaotong Univ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China
基金
中国国家自然科学基金;
关键词
PROPAGATION; POLARITONS; EXCITATION; MICROFIBER;
D O I
10.1364/OE.22.024322
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An analytical model for plasmon modes in graphene-coated dielectric nanowire is presented. Plasmon modes could be classified by the azimuthal field distribution characterized by a phase factor exp(im phi) in the electromagnetic field expression and eigen equation of dispersion relation for plasmon modes is derived. The characteristic of plasmon modes could be tuned by changing nanowire radius, dielectric permittivity of nanowire and chemical potential of graphene. The proposed model provides a fast insight into the mode behavior of graphene-coated nanowire, which would be useful for applications based on graphene plasmonics in cylindrical waveguide. (C)2014 Optical Society of America
引用
收藏
页码:24322 / 24331
页数:10
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