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Terahertz metamaterial polarization isolator

A technology of metamaterials and isolators, applied in the direction of electrical components, antennas, etc., can solve the problems that polarized devices are difficult to meet, and achieve the effects of wide-angle reflection, mature technology, and high bandwidth

Inactive Publication Date: 2018-03-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] With the development of modern communication system technology, it is difficult to meet the requirements of simple polarization devices.

Method used

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  • Terahertz metamaterial polarization isolator
  • Terahertz metamaterial polarization isolator
  • Terahertz metamaterial polarization isolator

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Embodiment

[0031] Such as figure 1 The material 2 of the uppermost metal structure layer can include gold, silver, aluminum and other conductive metal materials 1. The material of quartz can replace insulating materials such as sapphire, high-resistance silicon, InP, GaAs or silicon carbide, and the bottom grating 3 is consistent with the top material That's it, easy to process. As shown in the figure, the electric field of the TE wave polarizes the electromagnetic wave along the line of y, while the electric field of the TM wave polarizes the electromagnetic wave along the line of x.

[0032] Such as figure 2 , TE has a structural unit with a phase angle difference of 60° in the x direction, where l1 is mainly changed by the side length of the metal patch, and then the values ​​of w and d are adjusted to have a better phase difference in the frequency band to achieve a better reflection effect. figure 2 The grating on the underside of the dielectric substrate is shown in perspectiv...

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Abstract

The invention discloses a terahertz metamaterial polarization isolator, and relates to a sub-wavelength reflection polarization isolation device. A metal optical grating is arranged on the bottom surface of a dielectric substrate, a metal paster array is arranged on the top surface of the dielectric substrate, the radiation metal paster array is arranged periodically, and each periodic unit is onerow; each metal paster is in the shape of a square ring in which an opening is formed, each opening is formed in the position of the middle point of one side of the corresponding square ring, and thesides of each metal paster are arranged orthogonally. By adopting a two-dimensional plane artificial microstructure, phase regulation for TeraHertz waves is realized through a monolayer array, and the isolator is simple in structure, can be realized through micro machining means, and is mature in technology and easy to manufacture.

Description

technical field [0001] The invention relates to a sub-wavelength reflective polarization isolation device. Background technique [0002] Terahertz (THz) waves are a new type of electromagnetic spectrum to be developed, usually referring to electromagnetic waves with frequencies ranging from 0.1 THz to 10 THz. This frequency range lies between millimeter waves, infrared, and light, and has many unique electromagnetic properties. Therefore, it has extremely important potential application value in the fields of physics, chemistry, electronic information, imaging, life science, material science, astronomy, atmospheric and environmental monitoring, national security and anti-terrorism, communication and radar. [0003] Due to the advancement of technology, the operating frequency of radar is now getting higher and higher, and it has become an important research topic to break through the limitations of centimeter-band receiver-transmitter isolation devices or systems applied in...

Claims

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Application Information

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IPC IPC(8): H01Q15/24
CPCH01Q15/24
Inventor 史宗君罗智曾泓鑫杨梓强兰峰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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