Round-hole straight-line TeraHertz wave filter
A linear, terahertz technology, applied in the field of terahertz wave filters, can solve the problems of difficult manufacturing process, high cost, complex structure, etc., and achieve the effects of simple structure, excellent performance and easy integration
Inactive Publication Date: 2013-02-13
CHINA JILIANG UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the disadvantages of complex structure, difficult actual manufacturing process and high cost in the prior art, and provide a circular-hole linear terahertz wave filter with excellent narrow-band filtering performance
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Embodiment 1
[0015] Round hole linear terahertz wave filter:
[0016] The material of the substrate is silicon dioxide, the length is 3000 μm, the width is 2000 μm, and the thickness is 300 μm. The material of the rectangular straight waveguide, the large cylinder and the small cylinder is high-resistance silicon, the refractive index is 3.42, and the height is 50 μm. The rectangular straight waveguide has a length of 3000 μm and a width of 200 μm. The radii of the large and small cylinders are 400 μm and 200 μm respectively; the distance between the two large cylinders on one side of the rectangular straight waveguide is 1800 μm, and the distance between the two large cylinders on the other side of the rectangular straight waveguide is 2200 μm; four The distance between the large cylinder and the rectangular straight waveguide is 30 μm. The radius of the large cylindrical hole is 50 μm, and the radius of the small cylindrical hole is 25; the distance between adjacent cylindrical holes i...
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The invention discloses a round-hole straight-line TeraHertz wave filter. The round-hole straight-line TeraHertz wave filter comprises a TeraHertz wave input end, a TeraHertz wave output end, a substrate, a rectangular straight waveguide component, large cylinders and a small cylinder. The substrate is provided with the rectangular straight waveguide component, four large cylinders and the small cylinder. The rectangular straight waveguide component is horizontally provided with a round-hole array shaped like a Chinese character 'yi' in symmetrical mode. TeraHertz waves are incident from the TeraHertz wave input end, pass through the rectangular straight waveguide component with the round-hole array shaped like the Chinese character 'yi', and reach the TeraHertz wave output end. Due to the fact that a coupling effect occurs among the large cylinders, the small cylinder and the round-hole array shaped like the Chinese character 'yi', a frequency-selecting is provided, and filtering of TeraHertz wave signals can be achieved. The round-hole straight-line TeraHertz wave filter has the advantages of being good in filtering performance, simple in structure, small in size, saving in material, convenient to manufacture, easy to integrate and the like, and can meet requirements of application in the fields of TeraHertz wave medical imaging, non-destructive detection, TeraHertz wave communication systems and the like.
Description
technical field [0001] The invention relates to a terahertz wave filter, in particular to a circular hole linear terahertz wave filter. Background technique [0002] The terahertz frequency band is called submillimeter wave in the field of radio physics, and it is customarily called far-infrared light in the field of optics. Terahertz wave has unique transient, broadband, coherent and low-energy properties. Before the mid-1980s, due to the lack of effective methods for generating and detecting terahertz radiation, so little was known about this band that it was called the terahertz gap in the electromagnetic spectrum. In recent years, the research on the actual generation technology of terahertz sources has made great progress. With the emergence of quantum cascade lasers, free electron lasers, light wave difference frequency methods, and continuous terahertz wave methods that generate higher power through optical rectification, as well as the progress of terahertz detectio...
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IPC IPC(8): H01P1/20
Inventor 李九生
Owner CHINA JILIANG UNIV