Graphene illuminator, and heat dissipating apparatus and optical transmission network node using the graphene illuminator

Patent metadata

Field	Value
Publication number	US-9466940-B2
Application number	US-201414535043-A
Country	US
Kind code	B2
Filing date	Nov 6, 2014
Priority date	Jul 26, 2012
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

A graphene illuminator includes two electrodes, an accelerating electric field power supply, and several magnet sets, and further includes a graphene material used for providing free-electrons. The two electrodes are respectively disposed on both sides or at both ends of the graphene material, and meanwhile are both disposed on a plane where the graphene material is disposed; a positive electrode and a negative electrode of the accelerating electric field power supply are respectively connected to the two electrodes, to apply, in a first direction, an accelerating electric field to the graphene material; and the magnet sets are disposed on upper and lower sides of the plane where the graphene material is disposed, to generate a magnetic field perpendicular to the plane where the graphene material is disposed, and South poles and North poles of the magnet sets are arranged alternately to generate an alternating magnetic field in a second direction.

First claim

What is claimed is:

1. A graphene illuminator, comprising:
a graphene material forming a plane for providing free electrons;
two electrodes respectively disposed on two opposite ends or two opposite lateral sides of the graphene material, and both disposed on the plane of the graphene material;
a power supply having a positive terminal and a negative terminal which are respectively connected to the two electrodes, configured to apply, in a first direction, an accelerating electric field to the graphene material; and
magnet sets placed on an upper and a lower sides of the plane, configured to generate a magnetic field, wherein a direction of the magnetic field is perpendicular to the plane and is alternately reversed along the first direction;
wherein under influence of the accelerating electric field and the magnetic field, the free electrons provided by the graphene material perform a curvilinear motion on the plane and are excited to generate photons.

2. The graphene illuminator according to claim 1 , wherein the graphene material is a rectangular or strip-shaped graphene sheet, and that the two electrodes are respectively disposed on two opposite ends or two opposite lateral sides of the rectangular graphene sheet, or disposed at two opposite ends of the strip-shaped graphene sheet.

3. The graphene illuminator according to claim 1 , wherein the graphene material is a circular or annular graphene sheet, and that the two electrodes are respectively disposed on two opposite ends or two opposite lateral sides of the graphene material such that one electrode is disposed at a center of the circular or annular graphene sheet, and the other electrode is disposed at a periphery or circumference of the circular or annular graphene sheet.

4. The graphene illuminator according to claim 1 , wherein the curvilinear motion is a sinusoidal motion.

5. The graphene illuminator according to claim 1 , wherein South poles and North poles of the magnet sets are arranged alternately such that the magnet sets comprise first magnet sets and second magnet sets, and the first magnet sets and the second magnet sets are arranged alternately in the direction of the accelerating electric field, wherein the first magnet sets are arranged from the South pole to the North pole along a direction perpendicular to the plane, and an arrangement of the two poles of the second magnet sets are opposite to that of the first magnet sets.

6. The graphene illuminator according to claim 1 , further comprising reflecting mirror sets, wherein the reflecting mirror sets comprise a first reflecting mirror set above one electrode and a second reflecting mirror set above the other electrode and opposite to the first reflecting mirror set, wherein a portion of the photons excited by the free electrons are emitted through the first reflecting mirror set, the other part of the photons are reflected back by the first reflecting mirror set, and the second reflecting mirror set reflects back the photons hitting on it towards the first reflecting mirror set, thereby converging the photons excited by the free electrons in a single direction.

7. An optical transmission network node, comprising:
a graphene illuminator and reflecting mirror sets;
wherein the graphene illuminator comprises:
a graphene material forming a plane for providing free electrons;
two electrodes respectively disposed on two opposite ends or two opposite lateral sides of the graphene material, and both disposed on the plane of the graphene material;
a power supply having a positive terminal and a negative terminal which are respectively connected to the two electrodes, configured to apply, in a first direction, an accelerating electric field to the graphene material; and
magnet sets placed on an upper and a lower sides of the plane, configured to generate a magnetic field, wherein a direction the magnetic field is perpendicular to the plane and is alternately reversed along the first direction;

wherein the reflecting mirror sets comprise a first reflecting mirror set above one electrode and a second reflecting mirror set above the other electrode and opposite to the first reflecting mirror set; and
wherein under influence of the accelerating electric field and the magnetic field, the free electrons provided by the graphene material perform a curvilinear motion on the plane and are excited to generate photons, a portion of the photons excited by the free electrons are emitted through the first reflecting mirror set, the other part of the photons are reflected back by the first reflecting mirror set, and the second reflecting mirror set reflects back the photons hitting on it towards the first reflecting mirror set, thereby converging the photons excited by the free electrons in a single direction.

8. The optical transmission network node according to claim 7 , wherein the graphene material is a rectangular or strip-shaped graphene sheet, and the two electrodes are disposed on two opposite lateral sides of the rectangular graphene sheet, or disposed at two opposite ends of the strip-shaped graphene sheet.

9. The optical transmission network node according to claim 7 , wherein the graphene material is a circular or annular graphene sheet, and that the two electrodes are respectively disposed on two opposite ends or two opposite lateral sides of the graphene material such that one electrode is disposed at a center of the circular or annular graphene sheet, and the other electrode is disposed at a periphery or circumference of the circular or annular graphene sheet.

Assignees

• Huawei Tech Co Ltd
• Huawei Tech Co Ltd

Inventors

• Ou Jian
• Xiao Peiyi

Classifications

• H01S3/1628

  characterised by a semiconducting matrix · CPC title

• H01S3/0405

  Conductive cooling, e.g. by heat sinks or thermo-electric elements · CPC title

• H01S3/0903 Primary

  Free-electron laser · CPC title