Abstract
An all-dielectric THz waveguide has been designed, fabricated and characterized. The design is based on a hollow-core electromagnetic crystal waveguide, and the fabrication is implemented via polymer-jetting rapid prototyping. Measurements of the waveguide power loss factor show good agreement with simulation. As an initial example, a waveguide with propagation loss of 0.03 dB/mm at 105 GHz is demonstrated.
Highlights
Research involving the Terahertz (THz) spectrum (100 GHz–10 THz) has experienced dramatic growth recently in both technical achievement and commercial implementation
The design is based on a hollow-core electromagnetic crystal waveguide, and the fabrication is implemented via polymer-jetting rapid prototyping
THz electromagnetic crystal and associated components fabrication is still a major challenge remaining to be overcome, as the feature dimensions of THz EMXT components fall in a transition region between the conventional micromachining techniques used for microwave applications and the micro/nano-fabrication methods in use at optical frequencies [24, 25]
Summary
Research involving the Terahertz (THz) spectrum (100 GHz–10 THz) has experienced dramatic growth recently in both technical achievement and commercial implementation. The growth is application driven, with interest from various fields such as chemical and astronomical spectroscopy and sensing, medical and biological imaging and analysis, defense and security screening, communication networks and radars, etc [1]. Realization of a THz waveguide with acceptable performance remains a challenge in many regards such as loss, cost, coupling, and especially fabrication and component integration. With proper transition structure from the waveguide to planar circuits, solid-state sources and detectors may be integrated with the waveguide and horn antenna to realize compact THz transceiving systems. This waveguide serves as a critical building block in potential integrated THz systems that can be readily implemented by the proposed polymer-jetting rapid prototyping technique
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