Low-index terahertz pipe waveguides
Related Experiment Video
Updated: Jun 19, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
Published on: August 30, 2012
Chih-Hsien Lai1, Yu-Chun Hsueh, Hung-Wen Chen
1Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Abstract:
We propose and demonstrate a simple leaky structure for terahertz (THz) waveguiding. Different from previously reported air-core THz waveguides, in which a high-reflection-coated cladding layer is designed, the proposed structure here is a simple pipe with a large air core and a thin dielectric layer with uniform but low index. Using commercially available Teflon air pipes, we experimentally confirm that THz waves can be successfully guided in the central air core of 3-m-long pipes with excellent mode qualities, high coupling efficiencies, low attenuation constants, and controllable passband width.
More Related Videos
Related Concept Videos
General Characteristics of Pipe Flow I
The classification of fluid...
Laminar Flow
Pipe Flowrate Measurement
The orifice meter is a simple,...
General Characteristics of Pipe Flow II
The distance to reach a fully developed flow is called the entrance length and depends on the flow...

