Abstract

In many applications it is important to be able to control or compensate the effects of dispersion on signals propagating in waveguides. Microstructured waveguides are of particular interest because of their potentially large waveguide dispersion [1] and the strong dependence of the dispersion on microstructure design. Dispersion in microstructured waveguides has been extensively studied at optical wavelengths, including various structures designed to achieve specific dispersion profiles, i.e. taking into account both material and waveguide dispersion [2-4]. However, there have been very few reports of waveguide design for dispersion control in microstructured THz waveguides, and these have mostly been limited to metal-air structures [5-6]. In this paper we present theoretical and experimental results of dispersion in all-dielectric THz waveguides with a scaled microstructure, i.e. in which the size of the microstructure scales linearly with distance from the waveguide axis [7].

© 2015 IEEE