Graphene-aided D-type superfine optical fiber structure

Abstract

The invention discloses a graphene-aided D-type superfine optical fiber structure, which relates to the technical field of optoelectronics. The graphene-aided D-type superfine optical fiber structure comprises a fiber core and a fiber core coating layer. The graphene-aided D-type superfine optical fiber structure is characterized in that the fiber core includes an exposed section directly exposed in the air and a non-exposed section coated in the fiber core coating layer; a support mechanism is arranged below the exposed section; the middle section of the exposed section is polished to form a D-type optical fiber section; the polished surface of the D-type optical fiber section is provided with a graphene layer contacting the D-type optical fiber section, and the width of the graphene layer is larger than the diameter of the fiber core; and the two ends of the graphene layer at the two axial sides of the fiber core are respectively provided with a first electrode and a second electrode which contact the graphene layer. The problem that the traditional graphene optical fiber cannot obtain the high nonlinear characteristics of graphene is solved, and the insertion loss and power consumption of the device are reduced.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a graphene-assisted D-type ultra-fine optical fiber structure with strong optical nonlinear characteristics. Background technique [0002] Graphene is a honeycomb-shaped two-dimensional hexagonal carbon structure material. It is a new type of material with unique and excellent optoelectronic properties. It is considered to be an ideal substitute for traditional semiconductor materials in the future. Graphene has a zero-bandgap structure, which enables it to function in a very wide range of light wavelengths, and has a significant 2.3% absorption for light waves in a wide range. Graphene also has a large third-order nonlinearity. Coefficient χ (3) =1.4×10 -15 m 2 V -2 , under the applied voltage, the optical conductivity will also change, thereby changing its refractive index and absorptivity. In addition, in terms of technology, graphene is compatible with traditiona...

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Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problem that the traditional graphene optical fiber cannot obtain the high nonlinear characteristics of graphene, and at the same time reduce the insertion loss and power consumption of the device, the present invention provides a graphene-assisted D-type super fiber thin fiber structure

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