284 results about "Photonic crystal structure" patented technology

The invention discloses an independent regulation and control method for a photonic crystal double-band high-Q resonance mode and a resonant cavity, and the method comprises the steps: designing an initial resonant cavity which is a photonic crystal structure which is periodically arranged and has high rotational symmetry, respectively calculating quality factors under all modes on two high-symmetry points of a first unit cell of the minimum repeatable unit, and screening out BIC modes with infinite quality factors; optimizing the parameters of the first unit cells, so that the BIC modes of the two high-symmetry points are located at the required frequency; a first disturbance variable quantity is added into a first unit cell, and only the rotational symmetry is reduced, so that the BIC mode of the center point of the Brillouin region is adjusted to be a quasi-radiation mode; and adding a second disturbance variable quantity, and only folding the other high-symmetry point to the center of the Brillouin region so as to adjust the BIC mode of the other high-symmetry point into a quasi-radiation mode. According to the invention, one variable is regulated and controlled to only influence the quality factor of one resonance but not influence the performance of the other resonance.

The invention discloses a Janus cotton fabric with radiation refrigeration and antibacterial functions and a preparation method thereof.The preparation method creatively achieves multifunctional integration through multistage structural design and interface engineering and specifically comprises the steps that 1, a bionic silicon dioxide nano sheath layer grows on the surface of cotton fiber in situ through a controllable sol-gel method; the monodispersity of the nanoparticles is ensured by optimizing the ratio of the TEOS to the silane coupling agent; (2) introducing high-refractive-index nanoparticles to construct a dual-scale photonic crystal structure, and enhancing solar spectrum reflection by using a plasma resonance effect; (3) performing hydrophilic interface modification by adopting a biomacromolecule self-assembly technology to form a super-hydrophilic antibacterial layer; and (4) constructing a super-hydrophobic interface on the single side of the fabric through precise spraying, and finally forming a Janus structure with an asymmetric wetting gradient. The preparation process is mild in condition and high in controllability, and the obtained Janus fabric has excellent antibacterial performance (the antibacterial rate gt; 99.5%) and radiation refrigeration performance (daytime sub-environment temperature drop gt; 8 DEG C).

The invention discloses a method for preparing an iridescent cuprous oxide nanoparticle photonic crystal, which is characterized in that monodisperse spherical particles are obtained through a method for controlling the crystal form of cuprous oxide nanoparticles, so that the monodisperse spherical particles can be self-assembled into a three-dimensional ordered photonic crystal structure, thereby generating gorgeous iridescent color. The invention relates to a method for preparing iridescent cuprous oxide nanoparticle photonic crystals, which adopts monodisperse spherical cuprous oxide nanoparticles with a polycrystalline structure as a structural unit, and is synthesized by the following steps: 1) dissolving high-molecular-weight polyvinylpyrrolidone, trisodium citrate and soluble bivalent copper salt in a mixed solvent of polyethylene glycol and water; stirring until the materials are completely dissolved; (2) dropwise adding a strong alkali solution into the solution prepared in the step (1), vigorously stirring, quickly adding a reducing agent, and stopping after the reaction is completed under stirring; and 3) separating a reaction product, washing and drying in vacuum.

The invention discloses a colored photovoltaic module based on a photonic crystal coating technology and a preparation method thereof. According to the invention, nano monodisperse spheres with an organic structure coated with an inorganic structure are creatively prepared, meanwhile, the high-temperature-resistant organic-inorganic hybrid prime coat with a short-chain anchoring entanglement structure is adopted, and the two structures are perfectly matched to obtain a photonic crystal structure which can resist high temperature and strong illumination for a long time and has strong mechanical properties; the device is especially suitable for color photovoltaic use in a harsh environment. The colored photovoltaic module obtained by the invention has gorgeous metallic luster texture and can realize the characteristic of changing colors along with angles, and compared with a traditional colored photovoltaic module, the electric efficiency of the power generation module is higher, and the requirement of personalized building colored photovoltaic integration can be met.

The invention provides a photonic crystal surface emitting laser and a manufacturing method thereof, the photonic crystal surface emitting laser comprises a gain assembly and a photonic crystal assembly, and the gain assembly comprises a semiconductor substrate, a carrier transport layer and an active layer which are stacked in sequence; the photonic crystal assembly comprises a silicon-on-insulator structure and a photonic crystal structure formed on the silicon-on-insulator structure; the active layer and the photonic crystal structure are combined in a bonding mode so that light feedback and surface emission can be achieved through the photonic crystal structure when the active layer emits light. According to the photonic crystal surface emitting laser and the manufacturing method thereof, the key components of the photonic crystal surface emitting laser are separately manufactured and integrated through bonding, so that the manufacturing process is simplified, the manufacturing cost is reduced, the yield is improved, the process of each module can be independently optimized, and the risk of failure of the whole process is reduced.

A two-dimensional photonic crystal surface emitting laser includes an n-doped substrate, an n-doped cladding layer, an active layer, a photonic crystal layer, a p-doped cladding layer and a p-doped contact layer arranged in sequence from top to bottom. The photonic crystal layer includes a base material and a plurality of unit cells arranged periodically, each unit cell includes a first different-refractive index region, a second different-refractive index region and a third different-refractive index region that have a different refractive index from the base material. The surface emitting laser based on the photonic crystal structure may maintain single-mode operating characteristics of a device under a large mode field area, so that a high-power single-mode surface emitting laser may be achieved.

The invention discloses a photonic crystal hydrogel-based thermochromic intelligent window material as well as a preparation method and application thereof. The photonic crystal hydrogel-based thermochromic intelligent window material is obtained by filling a three-dimensional photonic crystal structure with a temperature-sensitive hydrogel prepolymerization solution and then curing the three-dimensional photonic crystal structure; the preparation method comprises the following steps: adding a temperature-sensitive monomer, modified cellulose and a cross-linking agent into deionized water, carrying out ultrasonic dispersion, stirring under an ice bath condition until the materials are completely dissolved, adding an initiator, stirring until the materials are dissolved, adding N, N, N ', N'-tetramethylethylenediamine, and uniformly stirring to obtain the temperature-sensitive hydrogel prepolymer. The photonic crystal hydrogel-based thermochromic intelligent window material prepared by the invention can regulate and control the window transmittance in real time according to the environment temperature, and has a sensitive thermochromic effect and excellent infrared shielding performance.

The invention relates to a method for preparing a multi-anti-counterfeiting patterned photonic crystal structure color-forming fabric by a screen printing method. The method comprises the following steps: S1, preparing a high-mass fraction nano-microsphere color paste and an ultraviolet fluorescent printing color paste for structural coloring; S2, applying a screen printing method to scrape the ultraviolet fluorescent printing color paste on the surface of a hydrophobic fabric to prepare a first ultraviolet fluorescent anti-counterfeiting pattern with anti-counterfeiting information; S3, scraping the slurry on the surface of the hydrophobic fabric with the first ultraviolet fluorescent anti-counterfeiting pattern obtained in S2 by a screen printing method to prepare a hydrophilic transparent pattern base layer and completely cover the first ultraviolet fluorescent anti-counterfeiting pattern; S4, scraping the high-mass fraction nano-microsphere color paste on the surface of the hydrophilic transparent pattern base layer obtained in S3 to prepare a second photonic crystal anti-counterfeiting pattern; S5, heating the fabric on which the nano-microsphere color paste is scraped obtained in S4 to obtain the multi-anti-counterfeiting patterned photonic crystal structure color-forming fabric.

The invention provides a color dynamic film and a preparation method and application thereof, and belongs to the technical field of optical imaging. The colored dynamic film provided by the invention comprises a colored micro-pattern layer, a bonding layer and a cylindrical lens array layer which are sequentially laminated, the colorized micro-pattern layer comprises a flexible thin film material and a micro-pattern structure which protrudes out of or sinks into the flexible thin film material; the micro-pattern structure is formed by a two-dimensional hole array structure or a columnar array structure; or the micro-pattern structure is formed by filling three-dimensional colloidal microspheres; a difference exists between the period of the micro-pattern structure and the period of the cylindrical lens array layer. According to the invention, the two-dimensional hole array structure or the columnar array structure is used for rasterizing and filling the micro-pattern, or the three-dimensional colloidal microspheres are used for filling to form a three-dimensional photonic crystal structure, the color effect presented by the formed micro-pattern structure is not limited by an observation visual angle, and obvious colored dynamic patterns can be observed in all directions.

The invention discloses a photonic crystal topological optimization method, a photonic crystal topological optimization device and electronic equipment. The method comprises the following steps: determining an objective function according to the inherent frequency of a phononic crystal structure on adjacent two-order dispersion curves; determining a preset constraint condition, wherein the preset constraint condition comprises one or more of a minimum size constraint, a static stiffness constraint and a volume constraint; determining the maximum value of the target function based on a preset constraint condition and a preset optimization function, and determining the density of each photonic crystal unit according to the maximum value; and determining unit cells of the photonic crystal according to the density of each photonic crystal unit. According to the photonic crystal topological optimization method, the manufacturability of the structure is ensured by applying the minimum size constraint, the static stiffness constraint and the volume constraint, meanwhile, the maximum band gap of the photonic crystal structure can be effectively captured by maximizing the target function by taking the band gaps of the two adjacent orders as the target function, the vibration reduction performance of the structure is improved, and the performance of the photonic crystal is improved. Therefore, the photonic crystal with collaborative design of manufacturability and vibration reduction characteristics is realized.

The invention discloses a high-color-fastness structural color film and a preparation method thereof, and belongs to the technical field of structural color films, and the preparation method comprises the following steps: S1, adding modified nano colloidal microspheres and carbon black into absolute ethyl alcohol, and carrying out ultrasonic dispersion for 40 min to obtain a microsphere dispersion liquid; s2, uniformly spreading the microsphere dispersion liquid on a smooth and flat polyfluortetraethylene plate, and drying at 40-45 DEG C to obtain a modified microglobulin photonic crystal template; and S3, injecting the modified polyurethane precursor solution into the modified microglobulin stone photonic crystal template, vacuumizing, defoaming, and curing at 80 DEG C to obtain the high-color-fastness structural membrane. According to the invention, the modified nano colloidal microspheres and the carbon black are taken as assembly elements of the photonic crystal, so that the stability of the structural color film is improved, and meanwhile, under the synergistic effect of the modified polyurethane precursor solution, cracks can be effectively prevented, and the photonic crystal structure is prevented from being damaged, so that the color fastness and durability of the structural color film are improved.

The invention relates to an energy valley photonic crystal structure, an optical waveguide and an optical beam splitter. According to the energy valley photonic crystal structure, the time reversal symmetry of lattice space is broken by changing the ratio of the silicon dielectric cylinders to air in the photonic crystal, namely the duty ratio of lattices, and the energy valley photonic crystal (VPC) with C3 symmetry is obtained, so that topological phase change is achieved, and higher stability is achieved. The optical waveguide provided by the invention has a good unidirectional transmission characteristic, and has good robustness for defects such as introduced cavities, disorder, sharp turns and the like. The light beam splitter has two different boundary states, light splitting can be achieved at multiple frequencies, the beam splitting ratio of the light splitter fluctuates within the range of 0.2-4.9 along with the change of the incident light frequency, and equal power light beam splitting can be achieved at multiple frequencies.

A laser diode component is described including: a semiconductor layer stack having an active zone for emitting laser radiation, a photonic crystal structure having a plurality of structured portions, contacts for electrically contacting the laser diode component, one contact having a plurality of contact portions arranged in recesses of the semiconductor layer stack (2), wherein the contact portions penetrate the active zone.

The invention relates to the technical field of garment materials, and discloses a bionic polymer for a garment material and a preparation method of the bionic polymer. Through the synergistic effect of the bionic micro-nano composite particles and the light / temperature double-response microspheres, the garment fabric is endowed with multiple dynamic functions: based on a photonic crystal structure and bionic shark skin textures, the fabric can realize intelligent optical regulation and control and fluid resistance reduction; the reversible cross-linked network enables the material to have self-repairing capability, and the service life is obviously prolonged; meanwhile, the biological enzyme auxiliary degradation unit is combined with the polylactic acid chain segment, so that efficient and controllable degradation of the fiber in the waste stage is realized, and the bottleneck that a traditional bionic polymer is difficult to recycle is broken through. In addition, the micro-fluidic spinning process enables the distribution uniformity of functional units to be improved by more than 50% by accurately regulating and controlling the sea island structure, and ensures the stable synergy of air permeability, waterproofness, mechanical strength and other properties. According to the invention, high wear resistance is maintained, and environment self-adaption and green and sustainable characteristics are realized at the same time.

The invention discloses a thin-film lithium niobate electro-optical modulator, and relates to the technical field of electro-optical modulators, and the thin-film lithium niobate electro-optical modulator comprises a substrate layer bonded with a thin-film lithium niobate layer, and a lumped electrode and a topological photonic crystal structure which are arranged on the substrate layer. The topological photonic crystal structure comprises a first topological photonic crystal and a second topological photonic crystal which is in mirror symmetry with the first topological photonic crystal; the first topological photonic crystal and the second topological photonic crystal form a topological interface state on the thin-film lithium niobate layer by a symmetry plane; the lumped electrodes are distributed on the two sides of the topological photonic crystal structure. According to the thin-film lithium niobate electro-optical modulator, the first topological photonic crystal structure and the second topological photonic crystal structure are in mirror symmetry, and the lumped electrodes are arranged on the two sides of the topological photonic crystal structures, so that the overall size of the thin-film lithium niobate electro-optical modulator can be reduced while the modulation speed is kept.

The invention relates to the technical field of functional polymer composite materials, in particular to an intermediate film for laminated glass based on color generation of a photonic crystal structure and a preparation method of the intermediate film. The intermediate film comprises a thermoplastic resin matrix and a three-dimensional photonic crystal structure region dispersed in the thermoplastic resin matrix, wherein the three-dimensional photonic crystal structure region is formed by self-assembly of monodisperse microspheres, and the central wavelength of a photonic forbidden band of the region is located in a visible light range. According to the invention, a three-dimensional photonic crystal structure is constructed in the intermediate film, and structural color generation is generated by utilizing selective reflection of the photonic band gap effect on visible light with a specific wavelength. According to the laminated glass, the color is generated by interference of light instead of absorption of chemical pigments, so that the color can be continuously and regularly changed along with the change of an observation angle or an incident light angle, the dynamic and changing visual aesthetic feeling is given to the laminated glass, and the higher requirements of the fields of modern buildings, automobiles and the like on dynamic aesthetics and personalized appearance are met.

The invention discloses a colored heat insulation type radiation refrigeration film based on hollow SiO2 microspheres and a preparation method thereof, and belongs to the technical field of new materials. The monodisperse hollow SiO2 microspheres are used for preparing a three-dimensional photonic crystal structure color, the hollow structure can form a high refractive index ratio with a polymer and endow the film with a beautiful structural color, the heat conductivity of the material is reduced, the purposes of heat insulation and heat preservation are achieved, and the heat management capacity is effectively improved. The micron-sized particles for reflecting sunlight are large in particle size and cannot be filled in gaps of the photonic crystal structure to damage the structural color, the polymer for film forming permeates into the gaps of the photonic crystal structure, and the micron-sized particles and the photonic crystal are cured in the polymer film, so that the film forming effect is improved. The problem that the structural color and the radiation refrigeration material are poor in bonding strength is solved. The daytime net refrigeration power of the prepared film can reach 95.6 W / m < 2 >, the temperature of a building can be reduced by 9.7 DEG C, raw materials are low in cost and easy to obtain, a metal reflecting layer is not needed, the preparation method is simple, and the film is expected to be applied to energy-saving buildings on a large scale.

The invention provides a multi-junction cascade photonic crystal surface emitting laser and a preparation method thereof. The multi-junction cascade photonic crystal surface emitting laser comprises a substrate; the three-dimensional photonic crystal structure is arranged on the substrate, the three-dimensional photonic crystal structure comprises a longitudinal periodic structure formed by a plurality of laminated structures which are sequentially stacked in the vertical direction of the substrate, each laminated structure comprises an active layer and a photonic crystal layer, and the photonic crystal layer provides optical feedback for the active layer to form optical resonance; a transverse periodic structure is formed in each photonic crystal layer; and the plurality of tunnel junctions are arranged between the two adjacent laminated structures and are used for electrically connecting the two adjacent laminated structures.

The invention belongs to the technical field of nano photonic crystal micromachining, and particularly relates to a suspended photonic crystal film and a preparation method thereof. Sequentially depositing an aluminum oxide layer, a silicon dioxide layer and a silicon nitride layer on the silicon substrate, and then forming a patterned photonic crystal structure by etching the silicon nitride layer; part of the silicon substrate is removed through dry etching, the exposed aluminum oxide layer and the exposed silicon dioxide layer are sequentially removed through a wet etching or dry etching synergistic process, and the suspended photonic crystal film is obtained. Through the design of the composite sacrificial layer and the inverted etching strategy, the problems of structure collapse, etching residue and low alignment precision in the traditional process are solved, and the method is suitable for the fields of Moire photonics, integrated photonics and the like.

The invention provides a multi-wavelength integrated light source system and a manufacturing method thereof, the multi-wavelength integrated light source system comprises a PCSEL array and a photon integrated circuit, the PCSEL array comprises a plurality of PCSEL units, and photonic crystal structures of at least two PCSEL units in the plurality of PCSEL units are configured to have mutually different preset geometric parameters so as to respectively emit light with different wavelengths; the photonic integrated circuit comprises at least one wavelength division multiplexer; the photonic integrated circuit is formed on the photonic integration platform, and the PCSEL array and the photonic integrated circuit are physically bonded in a hybrid integration mode, so that light of different wavelengths emitted from at least two PCSEL units is coupled to different input ends of the wavelength division multiplexer.

The present invention relates to a photonic crystal coating, a preparation method, and its application, belonging to the technical field of photonic crystal structure color generation. The photonic crystal coating comprises the following components, measured in parts by weight: 100 parts of a hard-core-soft-shell nanosphere dispersion, 1 to 8 parts of a leveling agent, 0.1 to 0.4 parts of a stray light absorber, and 0 to 6 parts of a high-boiling-point additive. The photonic crystal coating is directly prepared from hard-core-soft-shell colloidal nanospheres. The resulting structural color coating exhibits excellent structural stability (associated with high color fastness), high color saturation, and a significant iridescent effect.

The invention discloses a three-dimensional asymmetric photonic crystal laser and a preparation method thereof. An epitaxial structure of the three-dimensional asymmetric photonic crystal laser comprises an N-type electrode, an N-type InP substrate, an N-type Al < x > < 1 > In < 1-x > < 1 > As upper limiting layer, a quantum well active region, a P-type Al < y > < 1 > In < 1-y > < 1 > As electron barrier layer, a P-type Ga < z > < 1 > In < 1-z > < 1 > Asz < 2 > P < 1-z > 2 functional layer, a P-type Al < x > < 2 > In < 1-x > < 2 > As lower limiting layer, a P-type InP connecting layer, a bottom insulating layer and a P-type electrode, wherein a three-dimensional asymmetric photonic crystal is etched on the P-type GaInAsP functional layer, and a chiral characteristic is introduced by destroying the symmetry of the photonic crystal, so that the P-type GaInAsP functional layer vertically emits a single-mode light beam with left-handed or right-handed circular polarization. By designing an asymmetric photonic crystal structure, efficient output of circularly polarized light beams is achieved, polarization selectivity and light beam quality are remarkably improved, and the advantages of low divergence angle and high light beam stability are achieved.

Semiconductor lasers and methods of forming the same are disclosed. A semiconductor laser includes a substrate and an epitaxial structure. The epitaxial structure grows on a substrate along a first direction and comprises an active region stacking structure and a photonic crystal structure. Wherein the active region stacking structure comprises a plurality of active regions stacked in the first direction, and the photonic crystal structure is located on the side, away from the substrate, of the active region stacking structure in the first direction. Laser generated by the semiconductor laser is emitted from the substrate or from one side far away from the substrate along a first direction.

The invention discloses a stealth coating material for aviation aircrafts. According to the invention, a three-layer composite structure design is adopted; the intelligent sensing layer is composed of graphene quantum dots and a piezoelectric nanofiber composite network, so that real-time sensing of electromagnetic wave signals is realized; the tunable metamaterial layer comprises a liquid crystal elastomer matrix and nickel-titanium alloy nanowires dispersed in the liquid crystal elastomer matrix, and electromagnetic parameters of the material are dynamically adjusted by applying an electric field or a temperature field; vanadium dioxide nanoparticles, a photonic crystal structure and carbon nanotube aerogel are integrated in the multispectral stealth layer, and radar, infrared and visible light multispectral synergistic stealth is achieved. The coating is further integrated with a microencapsulation repairing agent and an intelligent control system, and has the self-repairing and self-adaptive adjusting functions. Compared with the prior art, 0.1-40 GHz ultra-wide frequency band radar wave absorption is achieved, the radar cross section is reduced by 25-30 dB, the infrared radiation characteristic is reduced by 80% or above, the surface density is only 1.2-1.5 kg / m, the weight is reduced by 65% compared with a traditional coating, and a key material technical support is provided for a new generation of stealth aircrafts.

The present invention discloses a preparation method based on an integrated cuprous oxide photocathode. The method includes the preparation of a protein template, the step of preparing a hole transport layer on a conductive substrate, the formation of an inverse protein cuprous oxide photonic crystal structure, and the preparation of a protective layer. Its feature lies in that the step of preparing the photocathode based on the multiple modification of cuprous oxide photonic crystals includes: self-assembling a nanoscale protein template on the substrate with a hole transport layer, then electroplating cuprous oxide and a protective layer by an electrochemical method, and finally forming a multifunctional photocathode with an inverse protein photonic crystal structure through a high-temperature pyrolysis method or a solvent adsorption and desorption method. The multi-layer modified inverse protein Cu2O photocathode obtained by the present invention presents an ordered porous structure and exhibits the characteristics of a photonic crystal. By controlling the size of the protein template, the internal morphology of the inverse protein photonic crystal is regulated, and with the assistance of superimposing multi-layer functional thin films, three goals are achieved: a, improving the light capture ability of the material; b, increasing the photogenerated charge separation efficiency and accelerating the transfer of photogenerated electrons-holes from the bulk to prevent their self-oxidation; c, and avoiding the self-reduction of cuprous oxide through the presence of the protective layer. In the photo-electrochemical catalytic carbon dioxide reaction, the integrated Cu2O photocathode efficiently converts carbon dioxide into carbon monoxide (Φ STC = 1.6%, Yeild CO = 46.7 mmol / h).

A micro LED panel having a micro LED array and the system and method to manufacture the micro LED panel are provided in the present disclosure. The micro LED array includes at least one micro LED structure. The micro LED structure at least includes: a mesa structure and a photonic crystal structure array, which is formed in the mesa structure, thereby realizing higher directional light emission, simpler structure and lower cost. Furthermore, the re-growth layer is formed on at least one part of the sidewall of mesa structure, which decreases the non-radiation recombination at the sidewall surface of the mesa structure, improving the light emission efficiency and the image quality.

A surface-emitting laser device and a method for manufacturing and operating the same are disclosed. The surface-emitting laser device comprises an active layer, a semiconductor layer optically coupled to the active layer, and a photonic crystal structure disposed within the semiconductor layer. The device further comprises a laser region and a detector region. The laser region includes a first set of electrical contacts located on opposite sides of the active layer and the semiconductor layer, and generates the output field of the device. The detector region includes a second set of electrical contacts located on opposite sides of the active layer and the semiconductor layer, and located outside the first laser region. The detector region is configured to generate an output current proportional to the output field. The presence of the detector region within the device improves the structure and power monitoring techniques compared to the prior art.

The application provides a yttrium barium copper oxide photonic crystal and a preparation method thereof. 7‑x The photonic crystal structure is composed of periodic yttrium barium copper oxide (YBa2Cu3O 7‑x ) superconducting material circular crystal columns, the lattice constant is 2630nm, and the radius of the circular crystal column is 500nm. The photonic crystal can change the position and width of the band gap by changing the light incidence angle, so that the middle infrared band gap is realized. The photonic crystal is prepared by adopting a magnetron sputtering method to prepare a yttrium barium copper oxide film on a strontium titanate single crystal substrate, and then adopting a focused ion beam method to process the yttrium barium copper oxide film into a periodic nanostructure composed of yttrium barium copper oxide circular crystal columns, so that the yttrium barium copper oxide photonic crystal is obtained. The preparation method of the yttrium barium copper oxide photonic crystal is simple and easy to control.

The embodiment of the application is suitable for the technical field of photonic crystal design, and provides a photonic crystal design method, device, computer equipment and storage medium, the photonic crystal design method comprises: determining the structure of a photonic crystal to be generated; generating a data set according to the structure; training a deep neural network model using the data set; constructing a reinforcement learning model, the reinforcement learning model comprising an agent; using the agent and the deep neural network model, output a plurality of predicted structures, any of the predicted structures comprising a corresponding band gap structure. The photonic crystal design method can improve the efficiency of generating photonic crystals that meet the design requirements, and can search for the photonic crystal structure to be taken in the storage space that stores a large number of search effective photonic crystal structures, ensuring the efficiency and accuracy of photonic crystal design.