Dispersion characteristics of plasmonic waveguides for THz waves

Viphavakit, C., Themistos, C., Komodromos, M., Kalli, K., Quadir, A. & Rahman, B. M. (2013). Dispersion characteristics of plasmonic waveguides for THz waves. Proceedings of SPIE, 8775, doi: 10.1117/12.2021785

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Abstract

Today there is an increasing surge in Surface Plasmon based research and recent studies have shown that a wide range of plasmon-based optical elements and techniques have led to the development of a variety of active switches, passive waveguides, biosensors, lithography masks, to name just a few. The Terahertz (THz) frequency region of the electromagnetic spectrum is located between the traditional microwave spectrum and the optical frequencies, and offers a significant scientific and technological potential in many fields, such as in sensing, in imaging and in spectroscopy. Waveguiding in this intermediate spectral region is a major challenge. Amongst the various THz waveguides suggested, the metal-clad waveguides supporting surface plasmon modes waves and specifically hollow core structures, coated with insulating material are showing the greatest promise as low-loss waveguides for their use in active components and as well as passive waveguides. The H-field finite element method (FEM) based full-vector formulation is used to study the vectorial modal field properties and the complex propagation characteristics of Surface Plasmon modes of a hollow-core dielectric coated rectangular waveguide structure. Additionally, the finite difference time domain (FDTD) method is used to estimate the dispersion parameters and the propagation loss of the rectangular waveguide.

Item Type: Article
Additional Information: Viphavakit, C., Themistos, C., Komodromos, M., Kalli, K., Quadir, A. & Rahman, B. M. (2013). Dispersion characteristics of plasmonic waveguides for THz waves. Proceedings of SPIE, 8775, Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.2021785
Uncontrolled Keywords: Finite-element method (FEM), finite-difference time-domain method (FDTD), surface plasmon, THz waveguide, dielectric coated guide
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/12235

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