Graphene-assisted micro optical fiber ring-shaped cavity all-optical switch

An all-optical switch and annular cavity technology, applied in the field of optoelectronics, can solve the problems of poor compatibility, low efficiency, and high cost, and achieve the effects of compact structure, high-efficiency photothermal effect, and low cost

Inactive Publication Date: 2016-06-01
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of existing optical switch devices in terms of high cost, poor compatibility, low efficiency, and slow speed, the present invention aims to provide a graphene-assisted micro-fiber ring cavity all-optical switch

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Embodiment Construction

[0027] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0028] The graphene-assisted micro-fiber ring cavity all-optical switch described in the present invention is characterized in that the graphene film 1 is wrapped on the cavity of the micro-fiber ring cavity; the graphene film 1 can be wrapped in the micro-fiber ring cavity The entire cavity of the cavity can also be wrapped on a part of the cavity; the graphene film 1 can be grown on a metal foil by a chemical vapor deposition method, and the film formed after the metal foil is removed by a chemical etching method, It can also be a graphene film prepared by a mechanical stripping method; the micro-fiber annular cavity can be a "ring-shaped" annular cavity 2, a "junction" annular cavity 3, and a "ring-shaped" annular cavity 4; the micro-fiber The "ring-type" ring cavity can be a single-ring cavity, or a "multi-turn" ring cavity 5 composed of multiple rings; the m...

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Abstract

The invention discloses a graphene-assisted micro optical fiber ring-shaped cavity all-optical switch which comprises a graphene thin film and a micro optical fiber ring-shaped cavity device and is characterized in that the graphene thin film coats a cavity part of the micro optical fiber ring-shaped cavity device. According to the graphene-assisted micro optical fiber ring-shaped cavity all-optical switch disclosed by the invention, a photothermal effect of the graphene thin film is excited by driving light to generate ohmic heat, and a micro optical fiber ring-shaped cavity is heated by heat conduction; a refractive index of the micro optical fiber ring-shaped cavity is changed due to a thermo-optic effect so as to cause movement of a resonant wavelength of the micro optical fiber ring-shaped cavity; an output power of signal light entering the micro optical fiber ring-shaped cavity is changed along with change of the resonant wavelength; by modulating on or off of the driving light, the maximum or minimum output optical power of the signal light can be controlled, i.e. on or off of the signal light can be achieved. The graphene-assisted micro optical fiber ring-shaped cavity all-optical switch is benefited from a high-efficiency photothermal effect of graphene, the miniaturized micro optical fiber ring-shaped cavity and an all-optical driving technology, has the advantages of compact structure, low cost, high efficiency and the like, and has important application prospect in the fields of optical fiber communication, optical filtering and the like.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a graphene-assisted micro-fiber ring cavity all-optical switch. Background technique [0002] An all-optical switch is a device that uses light-controlled light technology to quickly switch or switch optical signals in communication networks and signal processing. Compared with switching devices such as electro-optic, acousto-optic, and mechanical, all-optical switches have the advantages of low cost, good compatibility, and anti-electromagnetic interference, and have great application prospects in the fields of optical communication and signal processing. Miniaturization and integration have become an important development trend of new all-optical devices. Many new all-optical devices with small size, high performance and high density integration have been proposed and reported. As one of the typical micro-nano optical waveguides, micro-fiber has the characteristics of ...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02B6/293
CPCG02F1/0126G02B6/2934G02F1/0147
Inventor 赵建林王亚东甘雪涛方亮赵晨阳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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