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Method for generating dynamic photon crystal from unidimensional photon crystal by temperature control

A three-dimensional photonic crystal and photonic crystal technology, which is applied in the field of dynamic photonic crystal generation, can solve the problems of difficulty in manufacturing, and achieve the effect of reducing the difficulty of experiments.

Inactive Publication Date: 2007-07-11
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The technology of the present invention solves the problem: overcomes the difficult problem of experimental production in the prior art, and provides a simple and feasible method for producing dynamic photonic crystals, which uses temperature-modulated one-dimensional photonic crystals with multilayer film structures to produce dynamic photonic crystals, and does not It involves the production of two or three-dimensional photonic crystal structures and the filling experiments of liquid crystal materials. The photonic band gap is shifted by temperature modulation of the refractive index of the film material, and there are many film materials that can be applied to the present invention, greatly reducing the Easy and flexible

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  • Method for generating dynamic photon crystal from unidimensional photon crystal by temperature control
  • Method for generating dynamic photon crystal from unidimensional photon crystal by temperature control

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Embodiment Construction

[0013] The present invention will be further described in conjunction with accompanying drawings.

[0014] Figure 1 shows a one-dimensional photonic crystal in which high and low refractive index materials are alternately arranged in a periodic structure. The refractive indices of the two materials in the figure are n 1 , n 2 , assuming n 1 >n 2 ; The thicknesses of the two materials are h 1 , h 2 ;The lattice constant is a, a=h 1 + h 2 ; The thickness of the two materials, namely the lattice constant a, is related to the wavelength of the incident light. The production material can be TiO 2 , or ZrO 2 , or Al 2 o 3 , or MgO, or SiO 2 Wait.

[0015] Example 1 Take the incident light wavelength as 420nm as an example, TiO 2 and SiO 2 The refractive index is n 1 = 2.55 and n 2 =1.45, the widths of the two materials are h 1 =50.11nm (TiO 2 ), h 2 =81.77nm (SiO 2 ).

[0016] Example 2 Take the incident light wavelength as 550nm as an example, TiO 2 and SiO ...

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Abstract

The temperature control one dimensional optical crystalline dynamic optical crystalline generating method has a heating oven connected to the multi film one dimensional optical crystalline, with the temperature of the one dimensional crystalline changing with the temperature changing of the heating oven, and the resulted refraction rate change of the film material, forming dynamic optical crystalline with the offset of the photon forbidden band. It only relates to one dimensional optical crystalline generating dynamic ones with greatly reduced experiment difficulty and greatly increased flexibility.

Description

technical field [0001] The invention relates to a method for generating a dynamic photonic crystal, which belongs to the technical field of photonic crystals. Background technique [0002] The concept of photonic crystals was first proposed in 1987 by Yablonovitch of the Bell Communications Research Center in the United States and John of the Physics Department of Princeton University. Photonic crystal is a kind of artificial structure material with periodic distribution of dielectric constant. When electromagnetic wave propagates in it, it is subject to multiple scattering. The interference between scattered waves makes photonic crystal have an energy band structure similar to that of solid crystal. There is a photonic band gap between the bands. Since the concept of photonic crystals was put forward, the theoretical aspect has been mainly to calculate and test the optical properties of static photonic crystals; the device aspect is mainly to study passive optical devices ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01G02B6/122C30B5/00G02B1/00
Inventor 张晓玉高洪涛王长涛邢廷文姚汉民
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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