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Controllable terahertz wave bandpass filter

A band-pass filter and waveguide technology, applied in the field of terahertz wave filters, can solve the problems of high cost, complex structure, difficult manufacturing process, etc., and achieve the effects of light weight, small volume, simple and novel structure

Inactive Publication Date: 2014-10-08
CHINA JILIANG UNIV
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  • Claims
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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 controllable terahertz wave bandpass filter with convenient manufacturing and excellent filtering performance

Method used

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  • Controllable terahertz wave bandpass filter
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  • Controllable terahertz wave bandpass filter

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Embodiment 1

[0015] Controllable terahertz wave bandpass filter:

[0016] The material of the substrate is gallium arsenide, the length is 2940 μm, the width is 1400 μm, and the thickness is 200 μm. The material of the first straight waveguide, the polygonal ring waveguide, the circular ring waveguide, the rectangular ring waveguide, the bulb-shaped waveguide and the second straight waveguide is silicon, and the thickness is 40 μm. The lengths of the first straight waveguide and the second straight waveguide are 200 μm and 300 μm respectively; the waveguide widths are both 80 μm. The width of the polygonal ring waveguide is 80 μm, the length of the base of the isosceles right triangle ring waveguide is 600 μm, and the side length of the square ring waveguide is 600 μm. The radius of the outer circle of the ring waveguide is 300 μm, and the width of the waveguide is 80 μm; the distance between the ring waveguide, the polygonal ring waveguide and the rectangular ring waveguide is 20 μm. Th...

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Abstract

The invention discloses a controllable terahertz band-pass filter. It includes a terahertz wave input end, a terahertz wave output end, a substrate, a first straight waveguide, a polygonal ring waveguide, a circular ring waveguide, a rectangular ring waveguide, a bulb-shaped waveguide, a second straight waveguide, and a laser input end; the laser is irradiated vertically on At the center of the ring waveguide, the terahertz wave is input from the input end of the terahertz wave. When there is no external laser irradiation, the terahertz wave with a frequency of 0.33THz is output from the output end through the coupling of the ring waveguide. When there is an external laser When irradiated, the resonant frequency point of the ring waveguide changes, and the terahertz wave with a frequency of 0.30THz is output from the output end, while the terahertz wave with a frequency of 0.33THz cannot be output from the output end, realizing the function of a controllable bandpass filter . The invention has the advantages of low loss, simple and novel structure, convenient realization, small size, small volume, light weight, material saving, easy manufacture and easy integration.

Description

technical field [0001] The present invention relates to a terahertz wave filter, in particular to a controllable terahertz wave bandpass filter. Background technique [0002] Terahertz wave science and technology is an emerging interdisciplinary subject that has developed rapidly in the past 20 years. Terahertz waves are usually defined as frequencies from 0.1 to 10 THz (10 12 Hz) range of electromagnetic waves. Tai is the English transliteration of Tera, so terahertz electromagnetic waves are also called T-rays, which belong to the category of far-infrared and submillimeter waves. The reason why terahertz technology has attracted widespread attention is because of the importance of electromagnetic waves in this band. The terahertz spectrum of matter contains very rich physical and chemical information. Significance. Based on the unique advantages of terahertz wave itself, it has broad application prospects in the fields of imaging, medical diagnosis, environmental scien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 李九生
Owner CHINA JILIANG UNIV
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