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Photonic crystal of two-dimensional graphene-like duplex structure

A technology of photonic crystals and ene complexes, applied in optics, optical components, instruments, etc., can solve the problem of low band gap ratio, achieve the effect of increasing band gap ratio and strong controllability

Inactive Publication Date: 2014-07-02
SHANDONG UNIV
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  • Application Information

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Problems solved by technology

[0006] The simple structure of traditional two-dimensional photonic crystals has a low band gap

Method used

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  • Photonic crystal of two-dimensional graphene-like duplex structure
  • Photonic crystal of two-dimensional graphene-like duplex structure
  • Photonic crystal of two-dimensional graphene-like duplex structure

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Embodiment 1

[0028] A two-dimensional graphene-like compound structure photonic crystal, comprising a flat base, periodically arranged primitive cell units 1 arranged on the flat base, each primitive cell unit 1 includes a first dielectric and a second dielectric , the dielectric constant of the first dielectric is different from the dielectric constant of the second dielectric; each cell unit 1 includes a regular hexagonal cylindrical hollow structure 4 formed by the first dielectric, in the regular hexagonal cylindrical hollow structure 4 A cylindrical dielectric column 2 arranged axially; a second dielectric is filled in the regular hexagonal hollow structure, and the second dielectric is filled between the regular hexagonal hollow structure 4 and the cylindrical dielectric column 2; Cylindrical dielectric pillars 3 are arranged between the primitive cells 1; the material of the cylindrical dielectric pillars 2 and 3 is the first dielectric.

[0029] The first dielectric is gallium arse...

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Abstract

A photonic crystal of a two-dimensional graphene-like duplex structure comprises a tabulate base part. Primitive cell units are periodically arranged on the tabulate base part, and each primitive cell unit comprises a first dielectric medium and a second dielectric medium. Each primitive cell unit comprises a hexagon prism-shaped hollow structure which is formed by one first dielectric medium and a cylindrical dielectric cylinder which is axially arranged in each hexagon prism-shaped hollow structure, each hexagon prism-shaped hollow structure is filled with one second dielectric medium, and each second dielectric medium is filled into the gap between the corresponding hexagon prism-shaped hollow structure and the cylindrical dielectric cylinder. The cylindrical dielectric cylinders are arranged between the adjacent primitive cell units, and the cylindrical dielectric cylinders are made of the first dielectric media. The structure parameter is optimized, so that the maximal TE band gap rate of 55.89% is obtained so far. According to the photonic crystal of the two-dimensional graphene-like duplex structure, the duplex structure is introduced, compared with a simple periodic structure, forbidden band modulating controllability is higher, and it is of great significance to designing and manufacturing two-dimensional photonic crystals.

Description

technical field [0001] The invention relates to a two-dimensional graphene-like compound structure photonic crystal, which belongs to the technical field of information optical photonic crystals. Background technique [0002] A photonic crystal refers to a periodic dielectric structure with a photonic band gap, and light whose frequency falls within the photonic band gap cannot propagate. Photonic crystals can be divided into one-dimensional photonic crystals, two-dimensional photonic crystals and three-dimensional photonic crystals according to the dimensionality of the photonic band gap in space. One-dimensional, two-dimensional and three-dimensional photonic crystals correspond to the periodic arrangement of dielectrics in one-dimensional, two-dimensional and three-dimensional directions. Two-dimensional photonic crystals generally have a dielectric constant of ε a A circular or square dielectric column with a dielectric constant ε b in a two-dimensional periodic arran...

Claims

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Application Information

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IPC IPC(8): G02B5/00
Inventor 杨修伦范冉冉黄哲王林辉
Owner SHANDONG UNIV
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