Photonic crystal filter and preparation method thereof

A photonic crystal and filter technology, applied in the field of photonic crystal filters and their preparation, can solve the problems of filter fading and filtering efficiency, and achieve the effects of wide application range, not easy to fade, and high filtering efficiency

Active Publication Date: 2022-05-13
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the above-mentioned problems of the prior art, the application provides a preparation method of a photonic crystal filter to solve the problem of fading and low filtering efficiency of the filter in the prior art technical issues

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  • Photonic crystal filter and preparation method thereof
  • Photonic crystal filter and preparation method thereof
  • Photonic crystal filter and preparation method thereof

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Embodiment 1

[0127] This embodiment discloses a method for preparing a photonic crystal filter, including:

[0128] Obtain the target object image, and the target images are the color patterns of the micron-wide chromaticity card, hue circle, sunflower, and hue block.

[0129] Extract the color area distribution information in the target object image;

[0130] Call the preset relationship model between the structural information of the photonic crystal unit cell and the color, and based on the color region distribution information, obtain the target structure information of the photonic crystal unit cell corresponding to each color region in the target object image; where the photonic crystal unit cell is Spiral grating structure;

[0131] Determine the target array information on the preset substrate based on the color region distribution information and the target structure information of the photonic crystal unit cell corresponding to each color region;

[0132] A photocurable glue dr...

Embodiment 2

[0137] This embodiment discloses a method for preparing a photonic crystal filter, including:

[0138] The difference between Embodiment 2 and Embodiment 1 is that the image of the target object is different, please refer to Figure 9 , Figure 9 It is a characterization diagram of the filtering structure of a photonic crystal filter provided in the embodiment of the present application; specifically, the photonic crystal unit cells with a width of 1 micron are arranged periodically in one direction to prepare a photonic crystal filter with 7 line structures ( Figure 9 The line widths from left to right in the figure are 2 microns, 4 microns, 6 microns, 8 microns, 10 microns, 12 microns, and 14 microns), and the above-mentioned photonic crystal filter was filtered and observed under a dark field microscope, and it was found that the first The filtering structure of columns (2 microns in width) has weak color rendering ability, and the brightness is basically saturated when t...

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Abstract

The invention relates to a photonic crystal filter and a preparation method thereof. The method comprises the following steps: acquiring a target object image, wherein the target object image corresponds to a filtering pattern of a photonic crystal filter; extracting color area distribution information in the target object image; calling a preset relation model between structure information and colors of the photonic crystal unit cells, and obtaining target structure information of the photonic crystal unit cells corresponding to each color region in the target object image based on the color region distribution information; wherein each photonic crystal unit cell is of a spiral grating structure; based on the color region distribution information and the target structure information of the photonic crystal unit cell corresponding to each color region, target array information on the preset substrate is determined; and performing photonic crystal array processing on a preset substrate based on the target array information to form a target photonic crystal array corresponding to the target array information, thereby obtaining the photonic crystal filter. According to the invention, the reflection bandwidth is relatively narrow, the filtering efficiency is relatively high, and color fading is not easy to occur.

Description

technical field [0001] The present application relates to the technical field of micro-nano optics and photonic crystal manufacturing, in particular to a photonic crystal filter and a preparation method thereof. Background technique [0002] Photonic crystals refer to artificial periodic dielectric structures with photonic band gap (Photonic Band-Gap, referred to as PBG) characteristics. The so-called photonic band gap means that waves in a certain frequency range cannot propagate in this periodic structure. The periodic parameters and material properties can realize the selective transmission or reflection of specific wavelengths in the visible light range, thus realizing the application of photonic crystals in the field of visible light filters. [0003] The structure of photonic crystals is like the periodic appearance of ions in semiconductor materials at lattice nodes (where each atom is located). Photonic crystals periodically appear in certain positions of high refrac...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G02B1/00G02B5/20G02B6/122G02B6/124
CPCG02B1/005G02B5/201G02B6/1225G02B6/124
Inventor陶虎维帅秦楠
OwnerSHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI