One-way bulk wave transmission method of gyromagnetic photonic crystal with honeycomb structure

A magnetophotonic crystal and magnetophotonic crystal technology, applied in optics, optical components, nonlinear optics, etc., can solve the problem of non-reciprocal transmission of body waves, and achieve the effect of stable transmission process and wide incident angle

Active Publication Date: 2019-06-04
HUAIYIN TEACHERS COLLEGE
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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for one-way bulk wave transmission of gyromagnetic photonic crystals with a honeycomb structure, which solves the problem of non-reciprocal bulk wave transmission using a honeycomb structure

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  • One-way bulk wave transmission method of gyromagnetic photonic crystal with honeycomb structure
  • One-way bulk wave transmission method of gyromagnetic photonic crystal with honeycomb structure
  • One-way bulk wave transmission method of gyromagnetic photonic crystal with honeycomb structure

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] This application is supported by the National Natural Science Foundation of China (61701187), the General Program of Natural Science Research in Universities in Jiangsu Province (16KJB51004), the Key Research and Development Program (Industry and Information Technology) (HAG2015039), and the 2016 Jiangsu University Student Practical Innovation Training Program (201610323020Z) )support.

[0024] The invention provides a technical solution: a method for o...

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Abstract

The present invention discloses a unidirectional body wave transmission method for the gyromagnetic photonic crystal of a honeycomb structure. The method comprises the steps of S1, selecting the gyromagnetic photonic crystal lattices of a honeycomb structure, wherein the gyromagnetic photonic crystal lattices of the honeycomb structure comprise two staggered triangular lattices; S2, realizing the spatial symmetry breaking by utilizing cylinders of different sizes in the staggered lattices; S3, applying a bias magnetic field on the cylinders, and realizing the time-reversal symmetry breaking by utilizing the external bias magnetic field. Based on the unidirectional body wave transmission method for the gyromagnetic photonic crystal of the honeycomb structure honeycomb structure, the spatial symmetry breaking is realized by cylinders of different sizes in the staggered lattices of the gyromagnetic photonic crystal of a two-dimensional honeycomb lattice structure. Meanwhile, through applying an external bias magnetic field, the time-reversal symmetry breaking is realized. As a result, the non-reciprocal transmission problem of the unidirectional body waves of the gyromagnetic photonic crystal is solved. The whole transmission process is stable, and the incident angle of the non-reciprocal transmission is wider.

Description

technical field [0001] The invention relates to the technical field of unidirectional bulk wave transmission of photonic crystals, in particular to a method for unidirectional bulk wave transmission of gyromagnetic photonic crystals with a honeycomb structure. Background technique [0002] In optics, space-reversal symmetry interacts with time-reversal symmetry to constrain the physical properties of the wave vector k. In order to have a significant non-reciprocal transmission, when the space and time reversal symmetry are broken at the same time, the non-reciprocal photonic crystal can produce a single-pass phenomenon, that is, ω(k)≠ω(-k) , k, -k represent a pair of relative transmission wave vectors. For example, under the action of an external saturated magnetic field in a gyromagnetic photonic crystal, the diagonal term of the magnetic permeability has an imaginary part, which breaks the time-reversal symmetry and produces a unidirectional boundary state. In addition, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02F1/09
CPCG02B1/005G02F1/09
Inventor 李清波陈贵宾孙慧玲周平季景
Owner HUAIYIN TEACHERS COLLEGE
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