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One-dimensional symmetrical Fibonacci quasi-optical crystal, preparation method thereof and optical instrument

A Fibonacci quasi-optical crystal technology, applied in the optical field, can solve the problem that the wavelength band cannot be effectively turned on and off, and achieve good modulation performance

Inactive Publication Date: 2018-09-28
谢逸音
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  • Abstract
  • Description
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Problems solved by technology

[0008] However, the inventors found that when using a general one-dimensional Fibonacci quasi-optical crystal to modulate and control the light output, there is a problem that it cannot be effectively turned on and off in some wavelength bands.

Method used

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  • One-dimensional symmetrical Fibonacci quasi-optical crystal, preparation method thereof and optical instrument
  • One-dimensional symmetrical Fibonacci quasi-optical crystal, preparation method thereof and optical instrument
  • One-dimensional symmetrical Fibonacci quasi-optical crystal, preparation method thereof and optical instrument

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Embodiment approach 1

[0054] Figure 4 is a schematic diagram showing a beam of light vertically passing through an asymmetric Fibonacci or symmetric Fibonacci-like quasi-optical crystal. The amplitude of the optical field in the nth layer can be written as

[0055]

[0056] The first item on the right represents the light field component propagating forward in the nth layer, A n is the amplitude of its electric field, and the second item on the right represents the light field component propagating backward in the nth layer, B n is the amplitude of its electric field, k n is the Bonisian of light in layer n, z n is the position of the interface between the (n-1)th layer and the nth layer. Considering the continuity of the optical field amplitude and magnetic field amplitude (that is, the derivative of the optical field amplitude) at the interface between the two layers, we can obtain the following iterative relationship

[0057]

[0058]

[0059]

[0060]

[0061]

[0062] w...

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Abstract

The invention discloses a one-dimensional symmetrical Fibonacci quasi-optical crystal, a preparation method thereof and an optical instrument. The one-dimensional symmetrical Fibonacci quasi-optical crystal includes a first optical material layer B and a second optical material layer A, the first optical material layer B and the second optical material layer A are arrayed according to a Fibonaccisequence to form N groups of optical layers which do not include a group S0 but merely include a group S1, a group S2, ... and a group SN, wherein the N groups of optical layers meet the following iteration relation that S0={B}, S1={A}, SN={SN-2SN-1}, and N is greater than or equal to 2. The optical instrument includes the one-dimensional symmetrical Fibonacci quasi-optical crystal. According to the one-dimensional symmetrical Fibonacci quasi-optical crystal and the optical instrument, transmission of light can be better modulated.

Description

technical field [0001] The invention relates to the field of optics, in particular to a quasi-optical crystal formed according to the arrangement of Fibonacci numbers, a preparation method thereof and an optical device using the quasi-optical crystal. Background technique [0002] The Fibonacci sequence is widely used in modern physics, quasi-crystal structure, optics, chemistry and other fields. One-dimensional Fibonacci quasi-optical crystals can modulate the transmission of light beams. For example, in some wavelength bands (band gap region) light beams cannot pass through the crystal, while in other wavelength bands (conduction band region) light beams can pass through the crystal, thereby realizing light modulation. Therefore, in recent years, one-dimensional Fibonacci quasi-optical crystals have attracted great interest and a lot of research has been done (see Non-Patent Documents 1-3). [0003] prior art literature [0004] non-patent literature [0005] Non-Paten...

Claims

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Application Information

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IPC IPC(8): G02B1/00
CPCG02B1/005
Inventor 谢逸音
Owner 谢逸音
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