The Impact Of The Defect Structure To The Transmission Spectrum Of Photonic Crystal Single-negative Materials

Through the study of photonic crystals, in theory, experiments and applications have been distributed to attract widespread attention because of the special optical properties of photonic crystal. The photonic crystal structure can be well controlled optical path propagation path, but also the modern science of semiconductor materials and precision processing technology is well likely to become the basis of material for the optoelectronics industry. Photonic crystal production process will inevitably mixed with the magazine. In photonic crystals doped with the introduction of the physical characteristics of the material structure in the photonic crystal defect would destroy the original periodic structure or cycle unit, causing the band gap of the photonic crystal structure change. Since the introduction of the defect, the original intact photonic crystal band-gap structures will have a very strong photon localization, the formation of the defect mode.Light transmission characteristics of the negative one-dimensional photonic crystal single defect structure using the transfer matrix method. First discuss a single negative one-dimensional photonic crystal with defect structure of the transmission spectrum of the reflection spectrum and the light field, analyze the impact of the defect structure of the defect mode of one-dimensional photonic crystal single-negative materials. After the discovery of the numerical simulation, the optical thickness of the defect structure will affect the center frequency and spatial distribution of the defect mode, the defect layer surrounding the dielectric material parameters also affect the optical properties of defects. Therefore, changing the number of defect layer and the position of the photonic crystal defect modes position to move and may lead to the defect mode splitting.In order to achieve the dynamic adjustment of the light wave transmission process, try to select the doping of the material permittivity and magnetic permeability with field change as defects in the photonic crystal layer, so that you can by changing the applied electric field or magnetic field on the defect mode regulation of the dynamic adjustment of the lightwave transmission. In two single-negative materials in alternating one-dimensional photonic crystal growth from the incorporation of a periodic array of single-negative material defect layer, there is always a defect mode within the structure of the band structure, and the two defect modes the position will move with the changes in the purpose of change or defect layer thickness of defect layers.