Surface plasmon light modulator and photoelectric device

Abstract

The invention provides a surface plasmon light modulator and a photoelectric device, and relates to the technical field of photoelectricity. The surface plasmon light modulator comprises a substrate, a graphene thin film layer arranged on the substrate, and a black phosphorus thin film layer arranged on the graphene thin film layer, wherein the graphene thin film layer and the black phosphorus thin film layer form a Van der Waals heterojunction. Therefore, through the Van der Waals heterojunction formed by the graphene thin film layer and the black phosphorus thin film layer in the surface plasmon light modulator, on the basis of regulation and control of grid voltage, an imaginary part of conductivity of graphene is adjusted to a positive number, so that a surface plasmon phenomenon is excited on an interface between the graphene thin film layer and the black phosphorus thin film layer, and therefore, by changing the incident light polarization direction of the black phosphorus, the dispersion relation of the heterostructure formed by the whole graphene thin film layer and the black phosphorus thin film layer is changed, and the adjustment of the light intensity is realized.

Description

technical field

[0001] The present application relates to the field of optoelectronic technology, in particular, to a surface plasmon light modulator and an optoelectronic device. Background technique

[0002] In the information society, the increasing development of data communication and the Internet has prompted the market to continuously increase the 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.

[0003] Since Geim and Novoselov successfully separated graphene from graphite with the University of Manchester Physics Award, graphene has attracted great enthusiasm because of its peculiar structure and excellent performance. Gr...

Examples

Embodiment Construction

[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0027] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, wi...

technical field

[0001] The present application relates to the field of optoelectronic technology, in particular, to a surface plasmon light modulator and an optoelectronic device. Background technique

[0002] In the information society, the increasing development of data communication and the Internet has prompted the market to continuously increase the 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.

[0003] Since Geim and Novoselov successfully separated graphene from graphite with the University of Manchester Physics Award, graphene has attracted great enthusiasm because of its peculiar structure and excellent performance. Gr...

Examples

Embodiment Construction

[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0027] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, wi...

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