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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 21 — Oct. 16, 2006
  • pp: 9944–9954

Low-index discontinuity terahertz waveguides

Michael Nagel, Astrid Marchewka, and Heinrich Kurz  »View Author Affiliations


Optics Express, Vol. 14, Issue 21, pp. 9944-9954 (2006)
http://dx.doi.org/10.1364/OE.14.009944


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Abstract

A new type of dielectric THz waveguide based on recent approaches in the field of integrated optics is presented with theoretical and experimental results. Although the guiding mechanism of the low-index discontinuity (LID) THz waveguide is total internal reflection, the THz wave is predominantly confined in the virtually lossless low-index air gap within a high-index dielectric waveguide due to the continuity of electric flux density at the dielectric interface. Attenuation, dispersion and single-mode confinement properties of two LID structures are discussed and compared with other THz waveguide solutions. The new approach provides an outstanding combination of high mode confinement and low transmission losses currently not realizable with any other metal-based or photonic crystal approach. These exceptional properties might enable the breakthrough of novel integrated THz systems or endoscopy applications with sub-wavelength resolution.

© 2006 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(230.7370) Optical devices : Waveguides
(260.3090) Physical optics : Infrared, far

ToC Category:
Optical Devices

History
Original Manuscript: July 21, 2006
Revised Manuscript: September 29, 2006
Manuscript Accepted: September 29, 2006
Published: October 16, 2006

Virtual Issues
Vol. 1, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Michael Nagel, Astrid Marchewka, and Heinrich Kurz, "Low-index discontinuity terahertz waveguides," Opt. Express 14, 9944-9954 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-21-9944


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