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Graphene-based silver nano-column enhanced dual-core light intensity modulator

A technology of graphene and dual-core optical fiber, which is applied in the directions of instruments, optics, nonlinear optics, etc.

Pending Publication Date: 2022-05-13
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, this modulator only supports single-port output

Method used

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  • Graphene-based silver nano-column enhanced dual-core light intensity modulator
  • Graphene-based silver nano-column enhanced dual-core light intensity modulator
  • Graphene-based silver nano-column enhanced dual-core light intensity modulator

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Embodiment Construction

[0018] 1) Polish the dual-core optical fiber 1 sideways until half of the two cores are polished off and form a concave surface on the polished surface; 2) Precipitate the bottom graphene 3-1 and 3-3 on the two cores respectively The surface is polished, and the graphene layers on both sides are not in contact; 3) Aluminum oxide 4-1 and 4-2 are deposited on the top of the graphene on both sides, respectively, as a transition material for modulating the structure; 4) The second layer is deposited on the top of the aluminum oxide Graphene 3-2 and 3-4 are used to enhance the interaction with light; 5) Nanopillar structures 5-1 and 5-2 are placed on the top of the graphene on the left and right sides respectively; 6) The modulation structure is at the top of the left and right sides A gold electrode is prepared, and the first electrode is in contact with the lower layer and the upper layer graphene respectively to form a flat plate capacitor structure.

[0019] The dielectric cons...

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Abstract

The invention provides a silver nanometer column enhanced double-core light intensity modulator based on graphene. The optical fiber is characterized by consisting of a double-core optical fiber 1, input and output port couplers 2-1 and 2-2, graphene layers 3-1 and 3-3 respectively deposited on the surfaces of left and right side polished optical fibers, graphene layers 3-2 and 3-4 respectively deposited on the top layers of left and right side aluminum oxide films, transition material aluminum oxide films 4-1 and 4-2 between graphene, silver nanorods 5-1 and 5-2 on the top layers, and an optical fiber coupling layer 3-1 and 3-3 respectively deposited on the surfaces of the left and right side polished optical fibers, the graphene layers 3-2 and 3-4 respectively deposited on the top layers of the left and right side aluminum oxide films, the transition material aluminum oxide films 4-1 and 4-2 and the silver nanorods 5-1 and 5-2 on the top layers. The electrode materials 6-1 and 6-3 which are in contact with the lower-layer graphene on the two sides, the electrode materials 6-2 and 6-4 which are in contact with the upper-layer graphene on the two sides, the two incident ports 7-1 and 7-2 and the two emergent ports 7-3 and 7-4 are placed end to end. Graphene has the characteristic of adjustable carrier concentration, two sides of the graphene are externally connected with different voltages respectively, different effective refractive index change conditions of double cores in the polished optical fiber 8 can be realized, and linear modulation of light intensity is realized at a tail port through coupling. The dual-port light intensity modulation device can be widely applied to the field of dual-port light intensity modulation in optical fiber communication.

Description

(1) Technical field [0001] The invention relates to a graphene-based silver nanocolumn enhanced dual-core optical intensity modulator, which can be used for dual-port high extinction ratio optical intensity modulation and optical fiber sensing, and belongs to the technical field of optical fiber integrated devices. (2) Background technology [0002] Optical modulators play an important role in optical communication systems due to their low insertion loss and fixed broadband characteristics, but for most optical fiber modulators, an additional electro-optical device needs to be added to the optical fiber transmission system , which not only increases the complexity of the system, but also brings serious insertion loss. Therefore, it is a requirement of modern communication systems to realize an optical modulator with simple structure and low insertion loss. Among them, the electro-optic modulator has a better application prospect because it can be directly combined with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/225G02F1/21G02F1/01G02F1/00
CPCG02F1/2252G02F1/212G02F1/0115G02F1/0018
Inventor 陈明王鹤轩王天让苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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