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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 9, Iss. 11 — Nov. 1, 2011
  • pp: 110013–

Quasi-TEM mode propagation in twin-wire THz waveguides (Invited Paper)

P. Tannouri, M. Peccianti, , P. L. Lavertu, F. Vidal, and R. Morandotti  »View Author Affiliations


Chinese Optics Letters, Vol. 9, Issue 11, pp. 110013- (2011)


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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 0.5 ps2/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.

© 2011 Chinese Optics Letters

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.7370) Optical devices : Waveguides

ToC Category:
Metamaterials, plasmon polaritons, and waveguides in terahertz region

Citation
P. Tannouri, M. Peccianti, , P. L. Lavertu, F. Vidal, and R. Morandotti, "Quasi-TEM mode propagation in twin-wire THz waveguides (Invited Paper)," Chin. Opt. Lett. 9, 110013- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-11-110013

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