Quasi-TEM mode propagation in twin-wire THz waveguides |
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| Authors: | PTannouri MPeccianti PLLavertu FVidal RMor otti INRS-EMT Boulevard Lionel-Boulet Varennes JX S Canada IPCF-CNR UOS Roma Sapienza University PAMoro Rome Italy |
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| Institution: | P.Tannouri 1,M.Peccianti 1,2,P.L.Lavertu 1,F.Vidal 1,and R.Morandotti 1 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 |
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| Abstract: | 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 ... |
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