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A terahertz wave communication method

A technology of terahertz wave communication and communication method, which is applied in the field of terahertz wave detection, modulation and application, which can solve the problems of high thermal background noise, low emission power of terahertz source, relatively little understanding of terahertz wave performance, etc., and achieve structural Simple and confidential effect

Active Publication Date: 2020-09-08
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low emission power of terahertz sources and relatively high thermal background noise, high-sensitivity detection methods are required to detect terahertz signals
At present, people know little about the performance of terahertz waves

Method used

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  • A terahertz wave communication method
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  • A terahertz wave communication method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] see figure 1Embodiment 1 of the present invention provides a terahertz wave transmitting device 10 , which includes a terahertz wave source 11 and a modulation device 12 placed on the side of the emitting surface 111 of the terahertz wave source 11 . The terahertz wave source 11 is used to excite terahertz waves. The terahertz wave excited by the terahertz wave source 11 is modulated by the modulation device 12 to form a terahertz modulated wave and emitted.

[0056] The structure of the terahertz wave source 11 is not limited, and may be an incoherent thermal radiation light source, a wide-band pulse (T-ray) light source or a narrow-band continuous wave light source.

[0057] see figure 2 , the modulation device 12 includes a support frame 120 and a carbon nanotube structure 121 . The shape and size of the support frame 120 can be selected according to needs. The material of the supporting frame 120 is not limited, and may be metal, polymer, glass, ceramic or carb...

Embodiment 2

[0072] The structure of the terahertz wave emitting device 10 provided in Embodiment 2 of the present invention is basically the same as that of the terahertz wave emitting device 10 provided in Embodiment 1 of the present invention. The surface of the nanotube is covered with a prefabricated layer. Preferably, the prefabricated layer covers the entire surface of each carbon nanotube.

[0073]The material of the prefabricated layer can be gold, nickel, titanium, iron, aluminum, titanium, chromium and other metals, aluminum oxide, magnesium oxide, zinc oxide, hafnium oxide and other metal oxides, metal nitrides, or metal sulfides, etc. at least one of . It can be understood that the material of the prefabricated layer is not limited to the materials listed above, and can also be non-metallic oxides such as silicon dioxide, non-metallic carbides such as silicon carbide, or non-metallic nitrides such as silicon nitride, as long as they can be physically Deposit on the surface o...

Embodiment 3

[0079] see Figure 11-12 Embodiment 3 of the present invention provides a terahertz wave emitting device 10A, which includes a terahertz wave source 11 , a modulating device 12 disposed on the side of the emitting surface 111 of the terahertz wave source 11 , and a rotating device 13 .

[0080] The terahertz wave transmitting device 10A provided in Embodiment 3 of the present invention is basically the same in structure as the terahertz wave transmitting device 10 provided in Embodiment 1 of the present invention, the difference being that it further includes a rotating device 13 . The rotating device 13 is used to rotate the terahertz wave source 11 or / and the modulation device 12, so as to adjust the angle between the extension direction of the carbon nanotubes in the carbon nanotube structure 121 and the polarization direction of the terahertz wave. The rotating device 13 can also be installed on the terahertz wave source 11 , or on the modulating device 12 . Alternatively...

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Abstract

A communication method based on terahertz wave is related. The method includes: providing a terahertz wave source to emit terahertz waves; locating a modulator in front of the outputting surface of the terahertz wave source so that the terahertz waves to be modulated to be terahertz modulated waves, wherein the modulator includes a carbon nanotube structure including a plurality of carbon nanotubes extending along the same direction; encrypting the terahertz modulated waves by regularly heating the carbon nanotube structure; providing a terahertz wave receiver to receive terahertz modulated wave to calculate the transmittance of the terahertz waves; and deciphering the terahertz modulated waves according to the variation regulation of the transmittance of the terahertz waves.

Description

technical field [0001] The invention relates to the technical field of terahertz wave detection, modulation and application. Background technique [0002] Terahertz waves usually refer to electromagnetic waves with a frequency between 0.1THz and 10THz and a wavelength between 30μm and 3mm. Its waveband is between microwave and infrared light, and it belongs to the far-infrared waveband. Due to the lack of effective generation methods and detection methods, scientists have very limited understanding of the nature of electromagnetic radiation in this band. [0003] In the past ten years, the rapid development of ultrafast laser technology has provided a stable and reliable excitation light source for the generation of terahertz waves, which has made the generation and application of terahertz waves flourish. However, due to the low emission power of terahertz sources and relatively high thermal background noise, high-sensitivity detection methods are required to detect terahe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/90H04B10/85
CPCH04B10/85H04B10/90
Inventor 张凌柳鹏吴扬范守善
Owner TSINGHUA UNIV