CN102520480B - Multi-medium-coupling three-dimensional photonic crystal and method for designing and manufacturing multi-medium-coupling three-dimensional photonic crystal - Google Patents
Multi-medium-coupling three-dimensional photonic crystal and method for designing and manufacturing multi-medium-coupling three-dimensional photonic crystal Download PDFInfo
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- CN102520480B CN102520480B CN201110406205.6A CN201110406205A CN102520480B CN 102520480 B CN102520480 B CN 102520480B CN 201110406205 A CN201110406205 A CN 201110406205A CN 102520480 B CN102520480 B CN 102520480B
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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
The present invention relates to a kind of multimedium coupling three-D photon crystal and design and production method thereof.Specifically refer to the three-D photon crystal that simultaneously comprises two or more dielectric materials.
Background technology
Photonic crystal refers to that specific inductive capacity (or refractive index) is a kind of sandwich of three-dimensional arrangement on three dimensions.Yablornovitch and the John independent concept of proposition photonic crystal when research suppressed the spontaneous radiation of atom and light local respectively in 1987.Similar with traditional crystalline material, in the time that specific inductive capacity is subject to modulating in three dimensions, will present the band structure similar to solid-state electronic crystal, the electromagnetic wave of energy among band gap can not be propagated in this structure.When the wave frequency of work is during in optical band, custom is referred to as photonic crystal or photonic band gap structure.When the wave frequency of work is during in microwave frequency band scope, custom is referred to as electromagnetic bandgap structure.For studying conveniently, unified " photonic crystal " this concept of continuing to use.
The most basic characteristic of photonic crystal is forbidden photon band and photon local.In addition, researchist has also found slow wave and the transmission of super slow wave and negative refraction at photonic crystal.The various new applications of photonic crystal are all the character of these Uniques based on photon crystal structure itself.Catoptron, optical waveguide resonant cavity are several basic areas of photonic crystal applications.Because photonic crystal has band gap properties, therefore just can obtain reflectivity by appropriate design and approach 100% catoptron.Based on the design of catoptron, be easy to just can obtain various high efficiency wave filter (as low-pass filter, Hi-pass filter, bandpass filter, narrow-band filter etc.).From reverberator, utilize the different band gap features of TE and TM polarization in photonic crystal just can obtain various polarizers.By introduce appropriate line defect in mirror design, just can obtain excellent optical waveguide.And by introduce appropriate point defect in mirror design, just can obtain the resonator cavity of high-quality-factor.Concerning realizing these characteristics of photonic crystal, wider band gap is more conducive to control electromagnetic transmission in wider scope.
The band gap of photonic crystal can recently be controlled by change structure, filling rate and height dielectric.About different three-dimensional structures, as yard structure, diamond lattic structure photonic crystal have had many research reports.And the article of Kirihara etc. " by changing the electromagnetic transmission of periodic Control of electromagnetic crystals " (Solid State Communications, 124 phases, 2002,135-139 page) study the impact on photonic band gap by diamond lattic structure Cyclic stretch, essence is that the filling rate by changing photon crystal structure is controlled electro-magnetic bandgap, has obtained the more photonic crystal of broad-band gap after stretching.Article " with microwave-medium powder preparation millimeter wave electro-magnetic bandgap crystal " (the Joural of American Ceramics Society of Lv Xuesong etc., 9 2009 phases, 371-378 page) study the impact on electro-magnetic bandgap separately of differing dielectric constant microwave dielectric material.But based on the restriction of manufacturing technology, in above these researchs, photonic crystal is all only to comprise the two media material that is just situated between, and the photonic crystal that simultaneously comprises two or more dielectric materials not studies have reported that so far.This is the complicacy due to three-dimensional structure, adds that the medium material that simultaneously the comprises inconsistency in moulding, dry and sintering process all makes its manufacture very difficult.
Summary of the invention
The object of the present invention is to provide a kind of multimedium coupling three-D photon crystal and design and production method thereof.
Technical scheme of the present invention is achieved in that
The dielectric material that has periodically comprised multiple differing dielectric constant in multimedium coupling three-D photon crystal, described photonic crystal comprises periodically stacked and two kinds of forms of intersection:
Periodically stacked multimedium coupling three-D photon crystal refers to: three-dimensional photon crystal structure is equally divided into two parts or more parts, in every part, fill respectively the medium of differing dielectric constant, finally form the photonic crystal that simultaneously contains multiple differing dielectric constant medium;
The multimedium three-D photon crystal periodically intersecting refers to: will have in the photonic crystal of periodicity three-dimensional structure, ground floor is filled the first medium, and the second layer is filled the second medium, and the 3rd layer recharges the first medium, the 4th layer recharges the second medium, by that analogy; Or in every one deck, intersection is filled different medium; Or the mutually nested filling of two media forms multimedium photonic crystal.
Described three-dimensional structure comprises the redundant organism of three-dimensional column diamond lattic structure and spherical diamond lattic structure and diamond lattic structure, yard structure.
Used medium material comprises all stupaliths, fluent material and ultralow temperature metal material; The coupling of described multimedium refers between stupalith, the medium of multiple differing dielectric constant is coupled separately between fluent material or between ultralow temperature metal material, or between stupalith, fluent material and ultralow temperature metal material, medium intercouples.
A manufacture method for multimedium coupling three-D photon crystal, comprises the following steps:
First adopt CAD software to carry out structural design according to electromagnetic theory and utilize photocureable rapid shaping to manufacture resin mould, and preparing ceramic size or fluent material, ultralow temperature metal material;
Secondly, adopt multistep injection molding to prepare multimedium coupling three-D photon crystal;
Be directed to periodically stacked photonic crystal, injection molding is carried out to communication type design with shell, every kind of structure corresponding to dielectric material has a grouting port and a connected entrance, and the height of connected entrance is parallel with the peak of the shared structure of corresponding medium.By after a kind of dielectric paste injection molding, seal grouting port and connected entrance with plasticine, then carry out the injection molding of the second medium, by that analogy, finally obtain multimedium three-D photon crystal.
For with the photonic crystal of mutually nested structure, to in the middle of the superstructure of injection molding shell, separate with dividing plate by medium kind, for the injection molding of the first medium counter structure, another side, for the injection molding of the second medium counter structure, finally obtains multimedium coupling three-D photon crystal on one side.
The present invention, compared with traditional three-D photon crystal, has following characteristics:
1. the photonic crystal in the present invention comprises two or more dielectric materials, and the specific inductive capacity between medium material has been strengthened Bragg diffraction than (refractive index ratio), has obtained than the wider band gap of Single Medium material photonic crystal;
2. adopt rapid prototyping mould to solve the Problems in forming of multimedium coupling photonic crystal in conjunction with multistep injection molding, given full play to the advantage of photocureable rapid shaping on Design and manufacture, for photonic crystal has been established solid foundation to device development.
By the description of the drawings and specific embodiments below, will show more clearly feature of the present invention.
Brief description of the drawings
Fig. 1 is three kinds of photon dielectric crystals of the stacked diamond lattic structure of periodicity
Fig. 2 periodically intersects three kinds of photon dielectric crystals of diamond lattic structure
Fig. 3 is three kinds of photon dielectric crystals of nested diamond lattic structure periodically
Fig. 4 periodically intersects yard structure medium photonic crystal
Fig. 5 manufactures the method schematic diagram of multimedium coupling photonic crystal according to embodiment 1
Fig. 6 manufactures the method schematic diagram of multimedium coupling photonic crystal according to embodiment 3
Embodiment
Embodiment 1
Accompanying drawing 1 is the stacked diamond lattic structure medium photonic crystal of periodicity.(specific inductive capacity is respectively ε to choose multiple suitable dielectric material
1, ε
2, ε
3), utilize rapid shaping and multistep gel injection-moulding legal system for the multimedium photonic crystal that is coupled.In accompanying drawing 1, period 1 layer is that specific inductive capacity is ε
1the first medium, the first medium by curing toward second round layer inject the second medium ε
2, when the second medium soon solidifies, inject the third medium ε to period 3 layer
3, by that analogy, the photonic crystal that comprises medium when can preparing as accompanying drawing 1.Prepared multimedium coupling photonic crystal can be the multimedium coupling photonic crystal that comprises resin structure, can be also the pure ceramic photonic crystal after super-dry, degreasing and sintering processes.
Embodiment 2
Accompanying drawing 2 is periodically to intersect three kinds of photon dielectric crystals of diamond lattic structure.(specific inductive capacity is respectively ε to choose two kinds of suitable dielectric materials
1, ε
2), utilize rapid shaping and multistep gel injection-moulding legal system for the multimedium photonic crystal that is coupled.In accompanying drawing 2, period 1 layer is that specific inductive capacity is ε
1the first medium, the first medium by curing toward second round layer inject the second medium ε
2, when the second medium soon solidifies, inject the first medium ε to period 3 layer
1, be about to refill the second medium ε to period 4 layer while solidifying at period 3 layer medium
2, by that analogy, the periodicity that comprises three kinds of media when can preparing as accompanying drawing 2 is intersected diamond lattic structure photonic crystal.Prepared multimedium photonic crystal can be the multimedium coupling photonic crystal that comprises resin structure and two media, can be also the pure ceramic photonic crystal that comprises two kinds of potteries and air after super-dry, degreasing and sintering processes.
Embodiment 3
Accompanying drawing 3 is three kinds of photon dielectric crystals of the nested diamond lattic structure of periodicity.(specific inductive capacity is respectively ε to choose two kinds of suitable dielectric materials
1, ε
2), utilize rapid shaping and multistep gel injection-moulding legal system for the multimedium photonic crystal that is coupled.Described diamond lattic structure is taken out shell processing by CAD software, obtains the multimedium diamond lattic structure model of air diamond lattic structure, resin-diamond structure, the mutually nested composition of Air Reverse diamond lattic structure.In the air diamond lattic structure in accompanying drawing 3, inject the first medium ε
1, then in Air Reverse diamond lattic structure, inject the second medium ε
2, after vacuum freeze drying, obtain by medium ε
1, resin and medium ε
2three kinds of medium coupling photonic crystals of the nested diamond lattic structure of the periodicity that comprises three kinds of media of composition
Embodiment 4
Accompanying drawing 4 is periodically to intersect yard structure medium coupling photonic crystal.(specific inductive capacity is respectively ε to choose two kinds of suitable dielectric materials
1, ε
2), utilize rapid shaping and multistep gel injection-moulding legal system for the multimedium photonic crystal that is coupled.The adjacent long column body of every layer injects respectively two kinds of different dielectric material ε
1, ε
2, long column body corresponding to the long column body that upper strata is corresponding and lower floor is interconnected.Prepared multimedium photonic crystal can be the multimedium photonic crystal that comprises resin structure and two media, can be also the pure ceramic photonic crystal that comprises two kinds of potteries and air after super-dry, degreasing and sintering processes.
Embodiment 5
Manufacture the method for multimedium coupling photonic crystal according to embodiment 1.Shown in accompanying drawing 51 is the first medium grouting port; The 2nd, connected entrance, effect is to ensure that the first medium can only reach the structure height of design; 3,4 is respectively the first and the second medium, the 5th, and resin mould, the 6th, grouting shell.Specific implementation method is from 1 injection by ready the first dielectric paste, in the time that slurry height reaches the height of 2 connected entrances, unnecessary slurry can, from 2 outflows, now be blocked 1 and 2 mouthful with plasticine, injects fast from model top by preprepared slurry 2.The shell on top is wider, and the effect of this design is to have two, and the one, in the time injecting the first dielectric paste, slurry arrives after intermediate altitude, and unnecessary slurry can flow to the space on side, finally from 2 mouthfuls of outflows, avoids flowing in the structure on top; The 2nd, while injecting the second dielectric paste from model top, slurry can flow out from surrounding, make slurry evenly downward as far as possible, avoid the second dielectric paste to concentrate certain a bit to push the first medium downwards, thereby cause that two media mixes mutually, after slip casting completes through solidifying, obtain after freeze drying the multimedium coupling photonic crystal that comprises resin structure and two media, the pure ceramic photonic crystal that comprises two kinds of potteries and air that also can be after degreasing and sintering processes.
Embodiment 6
Manufacture the method for multimedium coupling photonic crystal according to embodiment 3.Structure shown in accompanying drawing 6 is that Fig. 3 structure adds shell, and centre separates diamond lattic structure and anti-diamond lattic structure with dividing plate.First by the first medium ε
1slurry inject air diamond lattic structure; Then by the second medium ε
2inject anti-diamond lattic structure, two media slurry is through solidify, comprised medium ε after freeze drying simultaneously
1, medium ε
2multimedium coupling three-D photon crystal with three kinds of media of resin.
Claims (2)
1. a manufacture method for multimedium coupling three-D photon crystal, comprises the following steps:
First adopt CAD software to carry out structural design according to electromagnetic theory and utilize photocureable rapid shaping to manufacture resin mould, and preparing ceramic size, fluent material or ultralow temperature metal material;
Secondly, adopt multistep injection molding to prepare multimedium coupling three-D photon crystal; Used medium material comprises all stupaliths, fluent material and ultralow temperature metal material; The coupling of described multimedium refers between stupalith, the medium of multiple differing dielectric constant is coupled separately between fluent material or between ultralow temperature metal material, or between stupalith, fluent material and ultralow temperature metal material, medium intercouples;
Be directed to periodically stacked photonic crystal, injection molding is carried out to communication type design with shell, every kind of structure corresponding to dielectric material has a grouting port and a connected entrance, the height of connected entrance is parallel with the peak of the shared structure of corresponding medium, by after the first dielectric paste injection molding, seal grouting port and connected entrance with plasticine, then at the first medium by the injection molding that carries out the second medium in curing, by that analogy, finally obtain multimedium three-D photon crystal;
Periodically stacked multimedium coupling three-D photon crystal refers to: three-dimensional photon crystal structure is equally divided into two parts or more parts, in every part, fill respectively the medium of differing dielectric constant, finally form the photonic crystal that simultaneously contains multiple differing dielectric constant medium.
2. method according to claim 1, is characterized in that, is directed to the photonic crystal of mutually nested structure, chooses two kinds of suitable dielectric materials, and specific inductive capacity is respectively ε
1, ε
2, utilize rapid shaping and multistep gel injection-moulding legal system for the multimedium photonic crystal that is coupled, diamond lattic structure is taken out shell processing by CAD software, obtain air diamond lattic structure, resin-diamond structure, the multimedium diamond lattic structure model of the mutually nested composition of Air Reverse diamond lattic structure, in the middle of the superstructure of injection molding shell, diamond lattic structure and anti-diamond lattic structure are separated with dividing plate by medium kind, in air diamond lattic structure, inject the first medium, then in Air Reverse diamond lattic structure, inject the second medium, after vacuum freeze drying, obtain by the first medium, three kinds of medium coupling photonic crystals of the nested diamond lattic structure of the periodicity that comprises three kinds of media of resin and the second medium composition.
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| US10580611B2 (en) | 2014-08-21 | 2020-03-03 | Raytheon Company | Rapid 3D prototyping and fabricating of slow-wave structures, including electromagnetic meta-material structures, for millimeter-wavelength and terahertz-frequency high-power vacuum electronic devices |
| CN106547039B (en) * | 2016-11-08 | 2019-07-23 | 西安铂力特增材技术股份有限公司 | A kind of preparation method of SiC photonic crystal |
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| JP5038218B2 (en) * | 2007-05-15 | 2012-10-03 | キヤノン株式会社 | Manufacturing method of three-dimensional photonic crystal |
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| CN1955768A (en) * | 2005-10-26 | 2007-05-02 | 佳能株式会社 | Three-dimensional photonic crystal and functional device including the same |
| CN1959451A (en) * | 2005-10-26 | 2007-05-09 | 佳能株式会社 | Three-dimensional photonic crystal and function device including the same |
| CN101717989A (en) * | 2009-11-13 | 2010-06-02 | 西安交通大学 | Three-dimensional photonic crystal manufacturing method |
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