Perturbative solution for terahertz two-wire metallic waveguides with different radii

被引：7
|
作者：
Gao, Hua [1 ]
Cao, Qing [1 ]
Teng, Da [1 ]
Zhu, Minning [1 ]
Wang, Kai [1 ]
机构：
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 21期
基金：
中国国家自然科学基金;
关键词：
SURFACE-PLASMON POLARITONS; WIRE; PROPAGATION; GROOVES; FIBERS; PLATE; GHZ;
D O I：
10.1364/OE.23.027457
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We introduce the technique of perturbation of boundary condition to the problem of terahertz two-wire metallic waveguides with different radii. Based on the quasi-TEM analytical mode fields derived by use of Mobius transformation, a concise expression for the complex effective index is obtained analytically. The expression is in good agreement with the simulation result. Further, the dispersion and attenuation are obtained from the expression. In addition, we find a zero value point of the group velocity dispersion around 1.268 THz. The results show that the technique of perturbation of boundary condition is helpful in the analysis and design of terahertz metal waveguide. (C) 2015 Optical Society of America
引用
收藏
页码：27457 / 27473
页数：17
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