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Proceedings Paper

Slow light in the dielectric-loaded metallic waveguide for terahertz wave
Author(s): Jinlong He; Xiangjun Li; Wei Wang; Zhi Hong
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Paper Abstract

The modes in a metallic waveguide loaded with a high permittivity dielectric rod may possess similar dispersion relations to the modes in the left-handed metamaterial (LHM) waveguide. Therefore, such dielectric-loaded metallic waveguide may also support slow light propagation. The slow light in such waveguide is numerically studied. The properties and the existence conditions of slow light modes in such waveguide are also numerically studied. The results show that the wavelength of slow light varies with the parameters of the waveguide and that high-contrast between the dielectric rod and the air is necessary of existence of slow light modes. The linearly tapered waveguide are proposed accordingly to realize the "trapped rainbow" phenomena. The practical tapered lossy waveguide is also investigated. It is shown that the slow light with low loss can be achieved in a realistic waveguide. Moreover, a novel notch filter based on such slow light waveguide is proposed.

Paper Details

Date Published: 4 November 2010
PDF: 7 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78543C (4 November 2010); doi: 10.1117/12.868370
Show Author Affiliations
Jinlong He, China Jiliang Univ. (China)
Xiangjun Li, China Jiliang Univ. (China)
Wei Wang, China Jiliang Univ. (China)
Zhi Hong, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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