Photonic crystal waveguide diagonal mode interference FANO resonant structure

A technology of photonic crystal waveguide and resonance structure, which is applied in the direction of optical waveguide light guide, light guide, optics, etc., can solve the problems of complex and asymmetric structure of photonic crystal Fano resonance, and achieve the effect of simple and symmetrical structure and reduced volume

Inactive Publication Date: 2019-04-23
SHENZHEN UNIV
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Problems solved by technology

However, the existing literature reports that the construction of controllable photonic cry

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  • Photonic crystal waveguide diagonal mode interference FANO resonant structure
  • Photonic crystal waveguide diagonal mode interference FANO resonant structure
  • Photonic crystal waveguide diagonal mode interference FANO resonant structure

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Embodiment Construction

[0027] In the following, the invention will be further described with reference to the drawings and specific implementations. It should be noted that, provided that there is no conflict, the following embodiments or technical features can be arbitrarily combined to form new embodiments. .

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0029] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "upper", "lowe...

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Abstract

The invention discloses a photonic crystal waveguide diagonal mode interference FANO resonant structure. The structure comprises a two-dimensional photonic crystal linetype waveguide formed through distribution of a plurality of dielectric cylinders with the refractive index, the two-dimensional photonic crystal linetype waveguide comprises two waveguide ports and one point defect resonant cavity,wherein the two waveguide ports are arranged on the two sides of the point defect resonant cavity, the point defect resonant cavity comprises four dielectric cylinders and one point defect dielectriccylinder with one cross section being square or similar to square, two dielectric cylinders are symmetrically arranged on the two sides of the point defect dielectric cylinder respectively, and the centers of the four dielectric cylinders and the point defect dielectric cylinder are distributed and arranged at equal intervals. The structure provided by the invention is compact, bright mode and dark mode of Fano resonance can be conveniently controlled, and Fano resonance is easy to achieve integration with other photonic crystal parts.

Description

Technical field [0001] The invention relates to the field of photonic crystal point defect mode distribution and Fano resonance, in particular to a Fano resonance structure caused by the diagonal mode interference of a photonic crystal waveguide. Background technique [0002] In recent years, photonic crystals have been a hot field for people to study optical devices. Photonic crystals are crystal structures composed of materials with different dielectric constants arranged in a periodic lattice. When electromagnetic waves propagate in the photonic crystal, Bragg scattering causes the electromagnetic waves to be modulated to form a band structure, and the electromagnetic waves in the forbidden band cannot propagate at all. The introduction of defects in the photonic crystal can realize the guidance and control of electromagnetic waves, so that various devices with different functions can be obtained, such as photonic crystal lasers, filters, sensors, etc. [0003] Fano resonance ...

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Application Information

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IPC IPC(8): G02B6/122G02B6/12
CPCG02B6/12G02B6/1225G02B2006/12061G02B2006/12078
Inventor 欧阳征标安银冰孙一翎
Owner SHENZHEN UNIV
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