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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 9 — Sep. 1, 2011
  • pp: 2200–2206

Adding metallic layers outside terahertz antiresonant reflecting waveguides: the influence on loss spectra

Chih-Hsien Lai, Ja-Yu Lu, and Hung-chun Chang  »View Author Affiliations


JOSA B, Vol. 28, Issue 9, pp. 2200-2206 (2011)
http://dx.doi.org/10.1364/JOSAB.28.002200


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Abstract

Spectral effects of adding metallic layers outside the terahertz (THz) antiresonant reflecting hollow waveguides are investigated in this work. We first examine the one-dimensional case, i.e., the slab-type hollow waveguide. Numerical results indicate that, with metallic coating outside the dielectric claddings, the loss spectrum shifts half-period for the TE mode, but not for the TM mode. Then, we investigate the situation where the metallic layers are moveable off the claddings and calculate the amount of the spectral shift for the TE mode. Finally, the two-dimensional cylindrical hollow waveguide, i.e., the recently proposed THz pipe waveguide, with metallic coating is inspected. It is found that the loss spectrum of the TE 01 mode shifts half-period and that of the TM 01 mode remains unmoved; while for the HE 11 and HE 21 modes, their periods become half of the original ones owing to the hybrid-mode nature.

© 2011 Optical Society of America

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(130.2790) Integrated optics : Guided waves
(230.7370) Optical devices : Waveguides
(260.3090) Physical optics : Infrared, far
(310.3915) Thin films : Metallic, opaque, and absorbing coatings

ToC Category:
Thin Films

History
Original Manuscript: May 12, 2011
Revised Manuscript: July 14, 2011
Manuscript Accepted: July 16, 2011
Published: August 17, 2011

Citation
Chih-Hsien Lai, Ja-Yu Lu, and Hung-chun Chang, "Adding metallic layers outside terahertz antiresonant reflecting waveguides: the influence on loss spectra," J. Opt. Soc. Am. B 28, 2200-2206 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-9-2200


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