Optical Characteristics Of Dual-periodical Photonic Crystal Heterostructures

IC that integrates the required circuit elements on a small piece of semiconductorchips,semiconductor devices, makes circuit miniaturization, lows power and cost,revolutionizes IT. When the miniaturization of integrated circuits reaches a certain scale asMoore’s Law predicted, electrons which performances as a carrier in the integrated circuits, isbound to restrict the enhancement of IT. To achieve a breakthrough on the size of the device,information transmission speed, efficiency and quality, we must rely on new materials,photonic crystals with a photon as a carrier can compensate for this defect. Photonic crystalspossess the characteristics of regulating the transmission of electromagnetic waves andformatting photonic bandage. In recent years, photonic crystals as a new material havebecome a hot topic, and researchers pay more and more attention to applications of photoniccrystal devices. The basic research on the photonic crystals evolves constantly to a relativelymature. But there are rare reports on the combined effect of the light and power. This papergives a report on this point with an objective of dual-periodical photonic crystalheterostructures.The characteristics of photonic band gap (PBG) of a one-dimensional (1-D) photoniccrystal (PC) with dual-periodical heterostructures (A~mB~n)~Nare studied by methods ofcombining numerical calculation and theoretical analysis. The essay puts emphasis on thecase of the PC with complex refractive index layers, as well as the meso-piezooptic effect ofthe strained PC. The main work and achievements include the following aspects:First of all, the paper gives a comprehensive introduction to photonic crystals includingthe concept of the basic principles, theory, research methods and preparation methods and its application prospects.Second, the characteristics of photonic band gap (PBG) of a one-dimensional (1-D)photonic crystal (PC) with dual-periodical heterostructures (A~mB~n)~Nare studied by transfermatrix method. Given the perfect electrolytes, the results show that photonic crystal can forma photonic bandage with an adjustment in numbers of defect modes and the width of bandages.The refractive index affects weakly on photonic bandages, thus the photonic crystal can bemade into a multi-channel narrow band filters with a adjustable performance. This photoniccrystal is sensitive to the incident angle, the transmission peaks moves to the direction of shortwave and the PBG becomes narrower as the incident angle grows. The numbers of defectmodes are determined by m and n, not by N.Finally, the paper puts emphasis on the case of the PC with complex refractive indexlayers, as well as the meso-piezooptic effect of the strained PC. The investigation results showthat the transmittance peaks gain if the imaginary part is negative. With the increase of theabsolute of the imaginary part, the transmittance peaks increase firstly then decrease evenoccur attenuation lastly. However, the transmittance peaks are absorbed if the imaginary partis positive. On the case of the strained PC, the variation of transmittance peaks presents ashape of L as the stain increases.In summary, this paper studies the characteristics of photonic band gap (PBG) of aone-dimensional (1-D) photonic crystal (PC) with dual-periodical heterostructures (A~mB~n)~N,makes an analysis and calculation of the refraction in the case of the strained (A~mB~n)~N,whichis so-called microscopic piezophotonic effect.