Slow light in the dielectric-loaded metallic waveguide for terahertz wave

Jinlong He; Xiangjun Li; Wei Wang; Zhi Hong

doi:10.1117/12.868370

4 November 2010 Slow light in the dielectric-loaded metallic waveguide for terahertz wave

Jinlong He, Xiangjun Li, Wei Wang, Zhi Hong

Proceedings Volume 7854, Infrared, Millimeter Wave, and Terahertz Technologies; 78543C (2010) https://doi.org/10.1117/12.868370
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Jinlong He, Xiangjun Li, Wei Wang, and Zhi Hong "Slow light in the dielectric-loaded metallic waveguide for terahertz wave", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78543C (4 November 2010); https://doi.org/10.1117/12.868370

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