Guided-Mode Filters for Terahertz Frequencies Fabricated by 3D Printing

In this article, we present the design and characterization of the first 3D-printed guided-mode filter for terahertz frequencies. The device consist on a diffractive grating fabricated on top of a rectangular dielectric waveguide by 3D printing. Finite difference numerical modeling shows this device...

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Bibliographic Details
Published in:Journal of infrared, millimeter and terahertz waves millimeter and terahertz waves, 2019-07, Vol.40 (7), p.731-737
Main Authors: Ortiz-Martinez, M., Castro-Camus, E., Hernandez-Serrano, A. I.
Format: Article
Language:English
Subjects:
3-D printers
Classical Electrodynamics
Design
Dielectric waveguides
Electrical Engineering
Electronics and Microelectronics
Engineering
Finite difference method
Incidence angle
Instrumentation
Propagation
Radiation
Simulation
Spectrum analysis
Terahertz frequencies
Three dimensional models
Three dimensional printing
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Summary:In this article, we present the design and characterization of the first 3D-printed guided-mode filter for terahertz frequencies. The device consist on a diffractive grating fabricated on top of a rectangular dielectric waveguide by 3D printing. Finite difference numerical modeling shows this device acts as a filter at a frequency that can be geometrically engineered and tuned around such frequency by varying the radiation incidence angle. Three devices were designed to operate at 200 GHz, 250 GHz, and 300 GHz; the devices were fabricated and successfully characterized using terahertz time-domain spectroscopy.
ISSN:1866-6892
1866-6906
DOI:10.1007/s10762-019-00602-3