Multi-medium-coupling three-dimensional photonic crystal and method for designing and manufacturing multi-medium-coupling three-dimensional photonic crystal

A photonic crystal, multi-medium technology, applied in the direction of light guide, optics, optical components, etc., can solve the problems of inconsistent manufacturing, complex three-dimensional structure, and no research report on photonic crystals.

Inactive Publication Date: 2012-06-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, based on the limitation of manufacturing technology, the photonic crystals in the above studies only contain two kinds of dielectric materials, high and low, and there are no research reports on photonic crystals containing more than two kinds of dielectric materials.
This is due to the complexity of the three-dimensional structure, coupled with the inconsistency of multiple dielectric materials included in the molding, drying and sintering processes, making it very difficult to manufacture

Method used

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  • Multi-medium-coupling three-dimensional photonic crystal and method for designing and manufacturing multi-medium-coupling three-dimensional photonic crystal
  • Multi-medium-coupling three-dimensional photonic crystal and method for designing and manufacturing multi-medium-coupling three-dimensional photonic crystal
  • Multi-medium-coupling three-dimensional photonic crystal and method for designing and manufacturing multi-medium-coupling three-dimensional photonic crystal

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Experimental program
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Effect test

Embodiment 1

[0028] attached figure 1 It is a periodic layered diamond structure of multiple dielectric photonic crystals. Select a variety of suitable dielectric materials (dielectric constants are ε 1 , ε 2 , ε 3 ......), using rapid prototyping and multi-step gel injection molding method to prepare multi-media coupled photonic crystals. attached figure 1 In the first periodic layer, the dielectric constant is ε 1 When the first medium is about to solidify, the second medium ε is injected into the second periodic layer 2 , when the second medium is about to solidify, inject the third medium ε into the third periodic layer 3 , and so on, can be prepared as attached figure 1 A photonic crystal containing multiple media at the same time. The prepared multi-medium coupling photonic crystal can be a multi-medium coupling photonic crystal containing a resin structure, and can also be a pure ceramic photonic crystal after drying, degreasing and sintering.

Embodiment 2

[0030] attached figure 2 It is a periodic cross diamond structure three dielectric photonic crystals. Select two suitable dielectric materials (dielectric constants are ε 1 , ε 2 ), using rapid prototyping and multi-step gel-casting methods to fabricate multi-media coupled photonic crystals. attached figure 2 In the first periodic layer, the dielectric constant is ε 1 When the first medium is about to solidify, the second medium ε is injected into the second periodic layer 2 , inject the first medium ε into the third periodic layer when the second medium is about to solidify 1 , re-inject the second medium ε into the fourth periodic layer when the medium of the third periodic layer is about to solidify 2 , and so on, can be prepared as attached figure 2 Photonic crystals with periodic crossed diamond structure containing three media at the same time. The prepared multi-medium photonic crystal can be a multi-medium coupled photonic crystal containing a resin structur...

Embodiment 3

[0032] attached image 3 It is a periodic nested diamond structure three dielectric photonic crystals. Select two suitable dielectric materials (dielectric constants are ε 1 , ε 2 ), using rapid prototyping and multi-step gel-casting methods to fabricate multi-media coupled photonic crystals. The diamond structure is shelled by CAD software to obtain a multi-media diamond structure model composed of an air diamond structure, a resin diamond structure, and an air anti-diamond structure nested with each other. attached to image 3 The first medium ε is injected into the air diamond structure in 1 , and then inject the second medium ε into the air antidiamond structure 2 , obtained by medium ε after vacuum freeze-drying 1 , resin and medium ε 2 A periodic nested diamond structure consisting of three dielectrics coupled with photonic crystals

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Abstract

The invention discloses a multi-medium-coupling three-dimensional photonic crystal and a method for designing and manufacturing the multi-medium-coupling three-dimensional photonic crystal. The multi-medium-coupling three-dimensional photonic crystal has super-wide band gaps in wider frequency and is easy to manufacture. According to the invention, the multi-medium-coupling three-dimensional photonic crystal disclosed by the invention periodically contains a plurality of dielectric materials with different dielectric constants; the multi-medium-coupling three-dimensional photonic crystal comprises two forms, i.e. periodic cascading and periodic intersection, and is manufactured by adopting a rapid prototyping and a multi-step injection molding method; the multi-medium-coupling three-dimensional photonic crystal disclosed by the invention contains more than two dielectric materials, the Bragg scattering is strengthened due to the dielectric constant ratio (refractive index ratio) among the dielectric materials, therefore, band gaps wider than those of a single-dielectric-material photonic crystal are obtained.

Description

technical field [0001] The invention relates to a multi-media coupled three-dimensional photonic crystal and a design and manufacture method thereof. Specifically, it refers to a three-dimensional photonic crystal containing two or more dielectric materials. Background technique [0002] Photonic crystal refers to a composite structural material whose dielectric constant (or refractive index) is three-dimensionally arranged in three-dimensional space. Yablornovitch and John independently proposed the concept of photonic crystals in 1987 when they studied the suppression of atomic spontaneous emission and light localization respectively. Similar to traditional crystal materials, when the dielectric constant is modulated in three-dimensional space, it will present an energy band structure similar to that of solid-state electronic crystals, and electromagnetic waves with energy in the band gap will not be able to propagate in this structure. When the working electromagnetic w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122G02B6/13
Inventor 李涤尘梁庆宣杨改孙坤田小永
Owner XI AN JIAOTONG UNIV
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