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Design method based on non-uniform transmission broadband PB super surface

A design method and non-uniform technology, applied in the field of communication, can solve problems that restrict practical applications, achieve the effect of suppressing volatility and improving efficiency

Pending Publication Date: 2020-10-02
陕西宛鸣信息科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transmission vortex light is affected by the bandwidth and efficiency of the transmission system, which seriously restricts its practical application. How to realize a broadband and high-efficiency transmission vortex light generator has become an important issue for scientists.

Method used

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  • Design method based on non-uniform transmission broadband PB super surface
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  • Design method based on non-uniform transmission broadband PB super surface

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Embodiment Construction

[0027] 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.

[0028] In order to solve the above technical problems, please refer to the attached figure 1 To accompanying drawing 8; The present invention provides a kind of design method based on non-uniform transmission broadband PB metasurface, and this method can be used for designing broadband vortex light generator, comprises the steps:

[0029] S1. It is theoretically deduced that when the phase difference between two linear polarizations satisfies |φ x -φ y |=π a...

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Abstract

The invention provides a design method based on a non-uniform transmission broadband PB super surface. The method can be used for designing a broadband vortex light generator. The method comprises thefollowing steps: theoretically deriving that when the phase difference between the two linear polarizations meets the equation that |phi<x>-phi<y>|=pi and the transmission amplitude meets the equation that |T<x>|=|T<y>|=1, high-efficiency transmission of a PB unit can be realized, and establishing a broadband PB metasurface working equation which is shown in the description, wherein f is any frequency in a frequency range from f<1> to f<2>, and a transmission phase of a right-handed circularly polarized wave during excitation of a left-handed circularly polarized wave is represented, i.e.,a super surface has a consistent phase change rate. Compared with the prior art, the vortex light generator designed on the basis of the unit has the advantages of being large in bandwidth, high in circular polarization purity, high in efficiency and the like, and a new research thought is provided for development of the broadband vortex light generator.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a design method based on non-uniform transmission broadband PB (Pancharatnam-Berry) metasurface. Background technique [0002] The incident wave and the transmitted wave of the transmission system are separated in physical space, so it avoids the unfavorable factors such as the shielding of the feed source and the interference between the reflected wave and the incident wave in the reflection system, and is more convenient and practical in practical applications. strong, but the transmission system is a two-port channel, we should not only pay attention to the transmitted wave, but also pay attention to the reflected wave, so the design of the transmission metasurface is more complicated, and how to realize the high-efficiency transmission metasurface is urgently needed. important problems to solve. [0003] Vortex light refers to a class of light beams carrying The phas...

Claims

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Application Information

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IPC IPC(8): G06F30/10
CPCG06F30/10Y02D30/70
Inventor 贾冰张屾
Owner 陕西宛鸣信息科技有限公司
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