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Terahertz modulator, and preparation method and tuning method of terahertz modulator

A modulator and terahertz technology, which is applied in the field of terahertz applications, can solve the problems of low modulation rate, small modulation depth, and narrow modulation bandwidth of terahertz modulators, achieving short response time, large modulation bandwidth, easy miniaturization and The effect of integration

Inactive Publication Date: 2015-06-03
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0005] The purpose of the present invention is to provide a terahertz modulator, a preparation method and a tuning method of a terahertz modulator, so as to solve the key technical problems of the terahertz modulator such as narrow modulation bandwidth, low modulation rate, and small modulation depth

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  • Terahertz modulator, and preparation method and tuning method of terahertz modulator
  • Terahertz modulator, and preparation method and tuning method of terahertz modulator
  • Terahertz modulator, and preparation method and tuning method of terahertz modulator

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Metamaterials are composed of artificial metal microstructures with a certain pattern shape arranged periodically in a substrate in a specific way. This artificial structure composite material has extraordinary physical properties or electromagnetic response, and its properties are mainly determined by the pattern shape and arrangement of artificial metal microstructures.

[0029] In the present invention, a layer of vanadium dioxide film is coated on the ...

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Abstract

The invention discloses a terahertz modulator, and a preparation method and a tuning method of the terahertz modulator. The terahertz modulator comprises a copper resonance ring array (1), a vanadium dioxide film (2), a silicon dioxide substrate (3), a broadband terahertz source (4) and a pumping laser source (5), wherein the copper resonance ring array (1) and the silicon dioxide substrate (3) form a metamaterial; and the rear surface of the silicon dioxide substrate (3) is plated with the vanadium dioxide film (2). The terahertz modulator disclosed by the invention is capable of modulating the terahertz intensity of an optically controlled high-speed broadband.

Description

technical field [0001] The invention belongs to the technical field of terahertz applications, and in particular relates to a terahertz modulator, a preparation method and a tuning method of the terahertz modulator. Background technique [0002] Terahertz (THz, 1THz=10 12 THz) waves refer to electromagnetic waves with a frequency in the range of 0.1-10THz (corresponding to a wavelength of 3mm-30μm). This wave band is between microwaves and light waves, and is an intersecting field between electronics and photonics. Due to its special position in the electromagnetic spectrum, terahertz waves have many superior properties such as perspective, security, and fingerprints, and have very important academic and application values ​​in the fields of spectroscopy, imaging, and communication. Among them, terahertz communication has the advantages of rich frequency band resources, large bandwidth, and good confidentiality. It can realize indoor short-distance or space secure wireless ...

Claims

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Application Information

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IPC IPC(8): G02F1/03
CPCG02F1/0344G02F2203/13
Inventor 张会徐先锋
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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