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A terahertz wave tunable optical switch based on artificial electromagnetic materials

A technology of artificial electromagnetic materials and light-controlled switches, which is applied in the directions of optics, circuits, electrical components, etc., to achieve the effect of easy preparation and simple structure

Inactive Publication Date: 2015-12-09
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the field of research on the combination of new artificial electromagnetic materials and light-sensitive materials, there have been no reports on optical switching devices based on terahertz wave cross-polarization transmission.

Method used

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  • A terahertz wave tunable optical switch based on artificial electromagnetic materials
  • A terahertz wave tunable optical switch based on artificial electromagnetic materials
  • A terahertz wave tunable optical switch based on artificial electromagnetic materials

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Embodiment Construction

[0024] The following examples describe the present invention in more detail:

[0025] The basic structural units of optically controllable terahertz switches such as figure 1 As shown in FIG. 2 , it includes a dielectric layer 1 and double artificial electromagnetic material layers 2 and 3 . The dielectric layer 1 is located between the double artificial electromagnetic material layers 2 and 3 and is made of polyimide material (Polyimide) with a thickness of t=6 μm. The double artificial electromagnetic material layers 2 and 3 are located on the surface of the dielectric layer 1, and each layer is composed of periodically arranged new artificial electromagnetic material basic units embedded with air arcs 4 and semiconductor arcs 5, and the period d=50 μm. Etch the metal layer covering the surface of dielectric layer 1 to form two air arcs with central angles α and β, the inner diameter and outer diameter are r=19.5 μm and R=22.5 μm respectively, and the air arc with central a...

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Abstract

The invention provides a TeraHertz wave tunable optical control switch based on artificial electromagnetic materials. The TeraHertz wave tunable optical control switch comprises a medium layer, a first artificial electromagnetic material layer and a second artificial electromagnetic material layer. The medium layer is located between the two artificial electromagnetic material layers. The two artificial electromagnetic material layers are located on the surfaces on two sides of the medium layer. Each artificial electromagnetic material layer comprises artificial electromagnetic material basic units which are periodically arranged. The basic unit structures of the two artificial electromagnetic material layers are completely the same, but non-0-degree and non-180-degree structural rotating angles exist to form chirality features. Each basic unit is formed by a semiconductor arc and an air arc which are different in length and embedded into the artificial electromagnetic materials. The TeraHertz wave tunable optical control switch is wide in spectral range, convenient in performance tuning, and low in manufacturing cost.

Description

technical field [0001] The invention relates to a transmission control device for terahertz waves, in particular to control the cross-polarization transmission of terahertz waves, and realize the on / off function of cross-polarization transmission of terahertz waves through optical control. Background technique [0002] Terahertz wave (THz) refers to the electromagnetic wave with a frequency in the range of 0.1THz-10THz (wavelength 0.03-3mm). the transition area. But before the 1980s, there were very few research results and data related to the THz band, mainly due to the limitation of THz generation sources and sensitive detectors, so this band is also called THz gap (THzgap). With the development of a series of new technologies and new materials, THz technology has developed rapidly, which has set off an upsurge of THz technology research in the world. At present, researchers are working hard to find devices that can control the transmission of terahertz waves and promote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01H01P1/10
Inventor 史金辉吕婷婷朱正关春颖王政平
Owner HARBIN ENG UNIV
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