Pahlevaninezhad Hamid, Heshmat Barmak, Darcie Thomas Edward
Department of Electrical Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC, V8P 5C2, Canada.
Opt Express. 2011 Dec 12;19(26):B47-55. doi: 10.1364/OE.19.000B47.
We present two solutions to the challenge of radiation loss of slot-lines at terahertz frequencies: using a slot-line in a homogeneous medium, and using a slot-line on a layered substrate. A theoretical analysis of the slot-line in a homogeneous medium as a terahertz transmission line is presented. The absorption coefficient is obtained in terms of the waveguide dimensions using the field distribution of the slot-line. Results show that the slot-line in a homogeneous medium and the slot-line on a layered substrate can be effective transmission lines for terahertz waves with 2 cm(-1) and 3 cm(-1) absorption due to conductor loss. Full-wave numerical simulations using the Finite Element Method (FEM) are applied to validate the theory.
在均匀介质中使用槽线，以及在分层衬底上使用槽线。对均匀介质中的槽线作为太赫兹传输线进行了理论分析。利用槽线的场分布，根据波导尺寸得到了吸收系数。结果表明，均匀介质中的槽线和分层衬底上的槽线可以成为太赫兹波的有效传输线，由于导体损耗，它们的吸收分别为2 cm⁻¹和3 cm⁻¹。采用有限元法（FEM）进行全波数值模拟以验证该理论。
