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Graphene-based magnetically tunable Faraday rotators

A Faraday rotator and graphene technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of complex structure, large volume, cumbersome manufacturing process, etc., and achieve the effect of small volume, simple and compact structure, and convenient use

Inactive Publication Date: 2017-03-15
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its structure is relatively complex, its volume is relatively large, and its production process is relatively cumbersome.

Method used

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  • Graphene-based magnetically tunable Faraday rotators
  • Graphene-based magnetically tunable Faraday rotators
  • Graphene-based magnetically tunable Faraday rotators

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Embodiment Construction

[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elucidated below in conjunction with specific embodiments.

[0025] Specific implementation:

[0026] The working frequency of the example of the present invention is set to 1.8GHz-2.2GHz, and the working mode is the main mode TE propagating in the circular waveguide 11 In the mode, the direction of the electric field is perpendicular to the direction of wave propagation, and there is no electric field component in the direction of wave propagation.

[0027] Example structure of the present invention such as figure 1 All dimensions shown are in millimeters (mm). It is mainly composed of a circular waveguide 1, a multilayer graphene module and a solenoid module, wherein the waveguide 1 is a circular waveguide with an inner diameter of 114.58mm, an outer diameter of 121.20mm, and a length of 200mm.

[002...

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Abstract

The invention relates to a graphene-based magnetic adjustable Faraday rotator. The structure is composed of three portions, i.e., a circular waveguide applied to a microwave frequency range, a multilayer graphene module vertical to a microwave signal propagation direction in the circular waveguide, and a solenoid module sleeving the circular waveguide for providing magnetic field offset. The multilayer graphene module is composed of multiple single-layer graphene sheets in parallel arrangement inside the module. The solenoid module can control the strength of an externally added bias static magnetic field through controlling the size of currents. When electromagnetic waves in a TE11 mode, transmitted inside the circular waveguide, are transmitted through the graphene module under a condition with the magnetic offset, angle deflection is generated. By using the rotator, a rotation angle can be accurately adjusted within a certain scope. Besides, the Faraday type rotator also has the advantages of simple and compact structure, quite small size, easy integration, simple control, and convenient use.

Description

technical field [0001] The invention belongs to a magnetically adjustable Faraday rotator used in the microwave technology field, and particularly relates to a new material graphene. Background technique [0002] In a microwave system, the function of the rotator is to rotate the incident wave by a specific angle after passing through the rotator, so as to obtain some characteristics required in engineering. The rotator is generally used as the core component of the isolator, and its performance will directly affect The performance of the isolator is good or bad. For some transmission systems that are extremely sensitive to reflected waves, such as amplification systems and nonlinear systems, Faraday rotators are required. The core component of the rotator is the material that can deflect the electromagnetic wave, so the selection of the material will directly affect the performance of the entire system. [0003] Nowadays, rotators in the microwave frequency band are gener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/375
Inventor 肖丙刚孙润亮谢治毅章东平
Owner CHINA JILIANG UNIV
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