Integrated Luneburg and Maxwell Fisheye Lenses for the Terahertz Range

Micro-scale silicon photonic crystal waveguides show promise to realize efficient terahertz photonic circuits. Monolithically-integrated gradient-index optics expand the functionality of terahertz photonic crystal waveguide-based systems. We present two devices that leverage such micro-photonic integrated optics; a Luneburg lens-based multi-beam antenna and a Maxwell fisheye lens-based slab-mode beam launcher.