Channeling terahertz (THz) radiation into a Teflon photonic crystal fiber waveguide by means of a lens duct in a THz pigtail assembly

A lens duct is designed to facilitate the launching of terahertz radiation from an InAs emitter into a photonic crystal fiber waveguide. The assembly comprising of emitter, lens duct and waveguide is called "terahertz pigtail" and is found to be a potential means of effectively channelling and directing terahertz radiation.