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9 May 2012 Design optimization of low-loss waveguides for THz guidance
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In this paper a low-loss hollow-core rectangular plasmonic waveguide with a dielectric coating of Te on is analyzed for terahertz propagation using a full-vectorial nite element method (FEM). It has been identied that, in contrast to the fundamental Hx10 mode, the Hx12 mode shows interesting modal properties and oers the lowest possible loss for the structure after introducing the dielectric coating. This mode also tends to yield a near-Gaussian eld prole when the dielectric coating thickness is optimized and then it will be easy to couple to a Gaussian shaped source. The optimization of the loss values has been evaluated by comparing the loss characteristics for dierent dielectric materials and also by using dierent metal claddings.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. M. A. Rahman, Anita Quadir, N. Kejalakshmy, and K. T. V. Grattan "Design optimization of low-loss waveguides for THz guidance", Proc. SPIE 8363, Terahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense, 83630H (9 May 2012);

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