Miniature wide-spectrum and high-sensitivity graphene fiber photoelectric detection chip

Abstract

The invention discloses a miniature wide-spectrum and high-sensitivity graphene fiber photoelectric detection chip. The miniature wide-spectrum and high-sensitivity graphene fiber photoelectric detection chip comprises a side polishing fiber, microstrip electrodes, a graphene thin film, a PB thin film and a PMMA thin film, wherein the side polishing fiber comprises a fiber core and a coating layer, the coating layer and the fiber core are partially polished to form a polishing region, the polishing region of the side polishing fiber faces upwards, the microstrip electrodes are arranged at twosides of the fiber core and cover non-polishing regions, and the PMMA thin film, the PB thin film and the graphene thin film sequentially cover upper surfaces of the microstrip electrodes from top tobottom. The chip has the characteristics of rapid response speed, high detection efficiency, high stability and excellent photoelectric detection performance; an all-fiber structure is employed and isperfectly compatible with a fiber communication system, and the problem of compatibility in production is solved; and the chip is directly fabricated on the fiber, the fabrication process is simple,mass production is facilitated, the problem of coupling of the fiber and a waveguide structure is also solved, the insertion loss is reduced, and the device integration is improved.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, and more specifically, relates to a miniature wide-spectrum high-sensitivity graphene optical fiber photodetection chip. Background technique [0002] With the rapid development of optical communication networks, photoelectric detection and sensing technologies are becoming more and more mature, and higher requirements are placed on the sensitivity, response speed, and applicable wavelength range of photodetectors. The rapid development of CMOS technology promotes the development of photodetectors in the direction of integration. At the same time, the development of all-optical communication networks also puts forward the demand for all-fiber photodetector chips. [0003] Graphene, as a new type of thin film material, is almost completely transparent, absorbs only 2.3% of light, and can absorb energy in a wide spectral range to generate electron-hole pairs, enabling wide bands...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at overcoming at least one deficiency of the above-mentioned prior art, and provides a miniature wide-spectrum high-sensitivity graphene optical fiber photodetection chip, which is used to solve the problems of slow response speed, low stability, and manufacturing process of photodetection chips in the prior art. Complexity, low detection efficiency, and low sensitivity

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