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A graphene-based all-fiber electro-optic modulator and method thereof

An electro-optical modulator, all-fiber technology, used in instruments, optics, nonlinear optics, etc., can solve the problems of waveguide and fiber loss, increase device cost, etc., and achieve the effects of easy packaging, reduced insertion loss, and high modulation efficiency.

Active Publication Date: 2015-08-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Existing optical communication systems use a large number of independently packaged single modulators. The graphene modulator based on waveguide structure needs to connect optical fibers at both ends in order to be compatible with optical communication systems; at the same time, the coupling between waveguide and optical fiber will produce large loss; and the cost of the waveguide package will also increase the cost of the device

Method used

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  • A graphene-based all-fiber electro-optic modulator and method thereof
  • A graphene-based all-fiber electro-optic modulator and method thereof
  • A graphene-based all-fiber electro-optic modulator and method thereof

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Embodiment Construction

[0023] Such as figure 1 , figure 2 As shown, the all-fiber electro-optic modulator based on graphene materials includes single-mode fiber 1, silica grooved substrate 2, Al 2 o 3 A transition thin layer 4, a graphene film 5, a single-mode optical fiber 1 is arranged on a silica grooved substrate 2, and is fixed with an encapsulated epoxy glue, and a groove 3 is arranged on the single-mode optical fiber 1, and the groove 3 With Al 2 o 3 Transition thin layer 4, Al 2 o 3 A graphene film 5 is arranged on the transition thin layer 4 .

[0024] The single-mode optical fiber 1 includes an optical fiber core layer 101 and an optical fiber cladding layer 102 .

[0025] The steps of the manufacturing method of the all-fiber electro-optic modulator based on graphene material comprise as follows:

[0026] 1) First place a single-mode optical fiber 1 with a diameter of about 125um into the groove of a silica grooved substrate 2 that matches the outer diameter of the optical fiber,...

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Abstract

The invention discloses an all-fiber electro-optical modulator based on graphene materials and a method of the all-fiber electro-optical modulator. The all-fiber electro-optical modulator based on the graphene materials comprises a single mode fiber, a silicon dioxide groove-type substrate, an Al2O3 transition thin layer and a graphene membrane, wherein the single mode fiber is arranged on the silicon dioxide groove-type substrate and fixed through sealed epoxy glue, a groove is formed in the single mode fiber, the Al2O3 transition thin layer is arranged in the groove, and the graphene membrane is arranged on the Al2O3 transition thin layer. Conductivity performance of graphene is changed through change of voltage applied on a metal electrode, therefore an imaginary part or a real part of an effective refractive index of a graphene composite layer structure is changed, and an electric absorption strength modulator or a phase modulator is achieved. The all-fiber electro-optical modulator based on the graphene materials and the method of the all-fiber electro-optical modulator can achieve design of the all-fiber electro-optical modulator, and have the advantages of being tiny in size, little in power consumption, low in insertion loss, high in modulating speed, beneficial for optical integration and the like. In addition, due to the fact that additional optoelectronic devices are not introduced, the all-fiber electro-optical modulator based on the graphene materials and the method of the all-fiber electro-optical modulator are suitable for being used in an all-fiber communication system and a dense wavelength division multiplexing (DWDM) system.

Description

technical field [0001] The invention belongs to the fields of optical communication, sensing technology and optoelectronic devices, and in particular relates to a graphene-based all-fiber electro-optic modulator and a method thereof. Background technique [0002] In the information society, the increasing development of data communication and the Internet has led to an increase in the market's demand for transmission rate and communication capacity, so that the demand for optical transmission networks has also increased rapidly. In large-capacity optical transmission systems, high-speed modulation of optical signals must be indispensable. The optical modulator is a key device for high-speed, long-distance optical communication and one of the most important integrated optical devices. Optical modulators can be divided into electro-optic, thermo-optic, acousto-optic, and all-optical according to their modulation principles. Among them, the electro-optic modulator is superior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/035
CPCG02F1/0118
Inventor 周锋郝然周金海金晓峰章献民郑史烈池灏
Owner ZHEJIANG UNIV
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