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A 1D chain of magnetic photonic crystals with an asymmetric primitive structure

A magnetic photonic crystal, asymmetric technology, applied in the optical field, can solve the problems of the theoretical mechanism of one-dimensional magnetic photonic crystal chain, the realization method is not deep enough and perfect, to promote miniaturization and tunability, and solve the problem of large lateral size , the effect of reducing difficulty

Inactive Publication Date: 2018-10-02
HUAIYIN TEACHERS COLLEGE
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Problems solved by technology

At present, people's understanding of the theoretical mechanism and realization methods related to the nonreciprocity of one-dimensional magnetic photonic crystal chains is not deep and perfect, especially the research on the relationship between nonreciprocity and symmetry is in its infancy, and more in-depth research is needed. Research

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  • A 1D chain of magnetic photonic crystals with an asymmetric primitive structure
  • A 1D chain of magnetic photonic crystals with an asymmetric primitive structure
  • A 1D chain of magnetic photonic crystals with an asymmetric primitive structure

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0019] This application is supported by the General Program of Natural Science Research in Universities in Jiangsu Province (16KJB510004), the Key Research and Development Program of Huai’an City (Industry and Information Technology) (HAG2015039), and the 2016 Jiangsu University Student Practical Innovation Training Program (201610323020Z).

[0020] In an embodiment of the present invention, a one-dimensional magnetic photonic crystal chain with an asymmetric elementary struct...

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Abstract

The invention discloses a one-dimensional magneto-photonic crystal chain with an asymmetric primitive structure. A T-shaped primitive is adopted, the one-dimensional magneto-photonic crystal chain is formed through lattice constant a periodic array. The primitive can also adopt space asymmetry structures such as a triangle and a semicircle. The primitive adopts a ferrite material, and a background material is an isotropic medium such as air. Accordingly, space inversion, time reversal and mirror symmetry are broken simultaneously, the one-dimensional magneto-photonic crystal chain with the asymmetric primitive structure is constructed, and one-way bulk wave mode transmission is achieved. By means of an energy band structure, energy transfer simulation and experiments, it is verified that the structure has good one-way transmission. The one-dimensional magneto-photonic crystal chain has the advantages of being arranged in a regulable and flexible mode and the like.

Description

technical field [0001] The invention relates to the field of optics, in particular to a one-dimensional magnetic photonic crystal chain with an asymmetric elementary structure. Background technique [0002] Over the past few decades, nonreciprocal optical devices, such as optical isolators, which allow light beams to travel in one direction while strongly suppressing backscatter, have attracted a lot of attention. The traditional implementation of non-reciprocal transmission devices mainly relies on the magneto-optical Faraday effect under the condition of an external bias magnetic field, but the Faraday rotator is relatively bulky, which hinders the miniaturization design of the device. In 2008, Z. Wang et al. experimentally studied that in the magnetic photonic crystal with a tetragonal lattice structure, because the k-point annexation is broken, there is an edge state with one-way transmission, and the effective Hamiltonian method is used to calculate and verify the duali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02B6/26
CPCG02B1/005G02B6/2746
Inventor 李清波孙慧玲周平孙红兵季景
Owner HUAIYIN TEACHERS COLLEGE
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