title: Efficient terahertz slot-line waveguides.
abstract: 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.
authors.affiliation: Department of Electrical Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC, V8P 5C2, Canada. hpahleva@uvic.ca
authors.forename: Hamid
authors.initials: H
authors.lastname: Pahlevaninezhad
authors.forename: Barmak
authors.initials: B
authors.lastname: Heshmat
authors.forename: Thomas Edward
authors.initials: TE
authors.lastname: Darcie