title: Bending and coupling losses in terahertz wire waveguides.
abstract: We present an experimental study of several common perturbations of wire waveguides for terahertz pulses. Sommerfeld waves retain significant signal strength and bandwidth even with large gaps in the wire, exhibiting more efficient recoupling at higher frequencies. We also describe a detailed study of bending losses. For a given turn angle, we observe an optimum radius of curvature that minimizes the overall propagation loss. These results emphasize the impact of the distortion of the spatial mode on the radiative bend loss.
authors.affiliation: Department of Electrical and Computer Engineering, MS-366, Rice University, 6100 Main Street, Houston,Texas 77005, USA. vastley@rice.edu
authors.forename: Victoria
authors.initials: V
authors.lastname: Astley
authors.forename: Julianna
authors.initials: J
authors.lastname: Scheiman
authors.forename: Rajind
authors.initials: R
authors.lastname: Mendis
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Mittleman