Graphene absorption-type electro-optic modulator based on D-type superfine optical fiber

Abstract

The invention discloses a graphene absorption-type electro-optic modulator based on a D-type superfine optical fiber. The graphene absorption-type electro-optic modulator based on the D-type superfine optical fiber comprises a base layer, the two sides of the upper end of the base layer are provided with a first supporting column and a second supporting column respectively, and a first graphene layer, an insulating layer and a second graphene layer are sequentially arranged at the upper end of the first supporting column and the upper end of the second supporting column; the electro-optic modulator further comprises a first electrode, a second electrode and the D-type superfine optical fibers, the first electrode is located on the outer side above the first supporting column and directly connected with the first graphene layer, the second electrode is located on the outer side above the second supporting column and directly connected with the second graphene layer, and the polishing surface of the D-type superfine optical fiber is attached to the middle of the upper surface of the second graphene layer. According to the graphene absorption-type electro-optic modulator based on the D-type superfine optical fiber, the D-type polished superfine optical fiber is utilized to serve as a modulation area, sufficient interaction can be achieved between graphene and light, and therefore effective optical-wave modulation can be achieved through smaller device size; the electro-optic modulator has the advantages of being high in modulation speed, low in power consumption, simple in preparation technology and easy to achieve.

Description

technical field [0001] The invention relates to an electro-optic modulator, which belongs to the field of optoelectronic technology, and more specifically relates to a graphene-absorbing electro-optic modulator based on a D-type ultrafine fiber. Background technique [0002] The optical modulator is the basis and key component of the optical communication system. Its function is to change the intensity, phase, polarization and other characteristics of the optical carrier passing through the optical modulator, and load the electrical signal on the optical carrier. [0003] Graphene is a honeycomb-shaped two-dimensional hexagonal carbon structure material. It is a new type of material. It has a carrier mobility of 200,000cm2 / Vs at room temperature, which is about 100 times that of silicon materials. The above means that graphene-based electronic devices can work at ultra-high speeds and are considered to be ideal substitutes for traditional semiconductor materials in the futur...

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Problems solved by technology

[0011] The present invention overcomes the deficiencies of the prior art, provides a graphene absorption electro-optic modulator based on D-type ultra-fine optical fiber, and solves the problems of difficult preparation of electro-optic modulators and inconvenient alignment of graphene and optical fiber in the past

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