Quasi-TEM mode propagation in twin-wire THz waveguides

被引：0

作者：

P.Tannouri ^{[1
]}

M.Peccianti ^{[1
,2
]}

P.L.Lavertu ^{[1
]}

F.Vida ^{[1
]}

R.Morandotti ^{[1
]}

机构：

[1] INRS-EMT,1650 Boulevard Lionel-Boulet,Varennes,J3X 1S2 Canada

[2] IPCF-CNR,UOS Roma,Sapienza University,P.A.Moro 2,00185 Rome,Italy

来源：

ChineseOpticsLetters | 2011年 / 9卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

THz; mode; Quasi-TEM mode propagation in twin-wire THz waveguides; TEM;

D O I：

暂无

中图分类号：

TN011 [电波传播、传播机理];

学科分类号：

080904 ;

摘要：

We numerically investigate the trade-offs between the dispersion properties,coupling efficiency,and geometrical constraints in dual-wire (twin-lead) terahertz (THz) waveguides.In particular,we show that their inherent linearly polarized quasi-transverse electromagnetic (TEM) modes exist for waveguide transverse dimensions comparable with the wavelength,enabling significant end-fire coupling (>10%) for numericalaperture limited Gaussian beams while supporting a relatively low-dispersion propagation of below 0.5 ps 2 /m,as desired for short-pulse time-domain spectroscopy applications.Starting from the dual-wire structure,we also demonstrate that low-dispersion tapers can be designed to improve coupling efficiency.

引用

页码：62 / 65

页数：4

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