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A Graphene-Based Group Delay Adjustable Controller

A technology for adjusting the controller and graphene, which is applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problem of the small adjustable range of the delay controller, and achieve the effect of a large adjustable range

Active Publication Date: 2019-07-26
HARBIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a graphene-based group delay adjustable controller in order to solve the problem that the adjustable range of the existing delay controller is small

Method used

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  • A Graphene-Based Group Delay Adjustable Controller
  • A Graphene-Based Group Delay Adjustable Controller
  • A Graphene-Based Group Delay Adjustable Controller

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Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment mode, a graphene-based adjustable group delay controller described in this embodiment mode includes two metal strips 1, a graphene layer 2, a silicon substrate 3, the first variable power supply 4 and the second No. variable power supply 5;

[0022] The graphene layer 2 includes M×N graphene units, wherein M is the number of rows of graphene units, N is the number of columns of graphene units, and both M and N are positive integers;

[0023] Each graphene unit includes No. 1 vertical graphene nanoribbon 2-1, No. 2 vertical graphene nanoribbon 2-2, two No. 1 horizontal graphene nanoribbons 2-3 and two No. 2 horizontal graphene Nanoribbons 2-4;

[0024] The No. 1 vertical graphene nanobelt 2-1, No. 2 vertical graphene nanobelt 2-2, two No. 1 horizontal graphene nanobelts 2-3 and two No. 2 horizontal graphene nanobelts 2- 4 are all on the same plane;

[0025] No. 1 vertical graph...

specific Embodiment approach 2

[0033] Specific embodiment 2: This embodiment further defines a graphene-based adjustable group delay controller described in specific embodiment 1. In this embodiment, a silicon dioxide layer 6 is also included;

[0034] The silicon dioxide layer 6 is arranged between the graphene layer 2 and the silicon substrate 3 .

[0035] In this embodiment, the silicon dioxide layer 6 is used to prevent electrical breakdown.

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment further defines the graphene-based adjustable group delay controller described in Embodiment 1. In this embodiment, the thickness of the silicon dioxide layer 6 is 30 nm.

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Abstract

The invention discloses a group-delay adjustable controller based on graphene, and relates to a delay adjustable control technology. The technical purpose is to solve the problem that an existing delay controller is small in adjustable range. A graphene layer comprises multiple graphene units; two vertical graphene nanobelts are parallelly arranged; first horizontal graphene nanobelts are connected to first vertical graphene nanobelts; second horizontal graphene nanobelts are connected to second vertical graphene nanobelts, and two vertical graphene nanobelts of the same row of graphene unitsare both of a continuous structure; the first vertical graphene nanobelts and the second vertical graphene nanobelts are all connected with metal belts; the graphene layer is fixed to a silicon substrate; a first variable power source and a second variable power source are both connected with the metal belts and the silicon substrate; by changing output voltage of the two power sources, the energyof position of the graphene layer is changed. The group-delay adjustable controller based on graphene has the advantages that a transmission peak of a transparent window is fixed to 1.2 THz, the amplitude is larger than 95%, and group delay is dynamically adjustable between 38.52 ps and 101.2 ps.

Description

technical field [0001] The invention relates to an adjustable delay control technology. Background technique [0002] If the structure of electromagnetically induced transparency (EIT) is realized by metal, if the transparent window (frequency, width, etc.) needs to be adjusted, the size of the device needs to be changed, which is sometimes difficult to achieve. The introduction of graphene structure can be achieved by changing the doping concentration of graphene Or apply a voltage to change the potential energy of graphene, thereby dynamically adjusting the transparent window of electromagnetically induced transparency (EIT). Although the current single graphene structure has the adjustment function, the adjustment ability is limited. Contents of the invention [0003] The object of the present invention is to propose a graphene-based group delay adjustable controller in order to solve the problem of the small adjustable range of the existing delay controller. [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
CPCG02F1/3515
Inventor 舒昌
Owner HARBIN UNIV