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Bidirectional double-frequency-point terahertz modulator

A terahertz, dual-frequency technology, applied in the field of terahertz waves, can solve the problems of high processing technology and processing environment requirements, complex device structure, difficult manufacturing process, etc., and achieve novel control principle, simple and compact structure, and convenient manufacturing. Effect

Pending Publication Date: 2022-01-25
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Relevant device research at home and abroad has also proposed various structures to realize the regulation of terahertz waves, but the reported device structure is complex, the actual production process is difficult, the cost is high, and the requirements for processing technology and processing environment are also high.

Method used

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  • Bidirectional double-frequency-point terahertz modulator
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  • Bidirectional double-frequency-point terahertz modulator

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Embodiment 1

[0027] In this embodiment, the structure and the shape of each component of the two-way dual-frequency point terahertz regulator are as described above, and thus will not be described again. However, the specific parameters of each component are as follows:

[0028] The 24×24 unit structure is arranged on a plane perpendicular to the input direction of the terahertz wave. The radius of the single-opening metal outer ring is 40 μm, the width of the metal strip is 5 μm, and the metal thickness is 0.2 μm. The inner ring of the middle notch has a radius of 20 μm, and the metal strip has a width of 5 μm and a length of 20 μm. The thickness of the middle polyimide dielectric layer is 30 μm. The vanadium dioxide thin film layer has a thickness of 0.2 μm.

[0029] The terahertz wave signal is input from the input terminal 1, and the terahertz transmitted wave is output from the terahertz wave output terminal 3 after passing through the two-way dual-frequency point terahertz regulato...

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Abstract

The invention discloses a bidirectional double-frequency-point terahertz modulator. The bidirectional double-frequency-point terahertz modulator comprises a terahertz wave incoming end, a reflection terahertz wave output end, a transmission terahertz wave output end and an array terahertz metasurface structure; the array terahertz metasurface structure is formed by arranging 24 * 24 unit structures on a plane perpendicular to the terahertz wave input direction. Each unit structure comprises a top-layer metasurface structure, a middle polyimide dielectric layer, a vanadium dioxide film layer and a bottom-layer metasurface structure sequentially distributed from bottom to top, wherein the top-layer metasurface structure is composed of a single-opening metal outer ring and a middle notch inner ring. By adjusting the phase change state of the vanadium dioxide thin film, transmission and reflection transmission of the terahertz waves are changed, and bidirectional transmission regulation and control of the terahertz waves are achieved. The bidirectional double-frequency-point terahertz modulator has the advantages of being simple and compact in structure, small in size, novel in control principle, convenient to manufacture, capable of achieving double-frequency independent adjustment, easy to machine and the like, and meets the application requirement of a terahertz wave communication multiplexing system.

Description

technical field [0001] The invention relates to the technical field of terahertz waves, in particular to a bidirectional dual-frequency point terahertz regulator. Background technique [0002] The unique frequency range of terahertz waves (located between the microwave frequency band and the optical frequency band) covers the molecular vibration and rotation spectra of most macromolecular substances, so most macromolecular substances have different absorption, reflection and transmission spectra in the terahertz frequency band. Distinct fingerprints. Limited by terahertz sources and detectors, electromagnetic waves in this frequency band have not been fully developed and utilized. In recent years, breakthroughs have been made in terahertz wave radiation sources and detection methods. Terahertz technology has broad application prospects in communication, astronomy, medical imaging, non-destructive testing, safety inspection and other fields. In order to meet the application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/02H01Q15/14
CPCH01Q15/0086H01Q15/14H01Q15/02
Inventor 李九生张磊
Owner CHINA JILIANG UNIV
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