Design Of Two - Dimensional Photonic Crystal Device And Its Optical Transmission Characteristics

The electromagnetic behavior in the structure of media cycle aroused extensiveresearch in recent years. Media periodic structure, the so-called photonic crystals, existsphotonic band gaps(Photonic Band-Gap, referres to as PBG) also called photonic band orphotonic band gaps, and photonic band is the specific attributes of photonic crystals.Photonic crystals have many important applications, such as photonic crystalfiber,photonic crystal mirror, photonic crystal WDM,nonlinear photonic crystaldevices,all-optical diode. The method of currently photonic crystal band structure andoptical transmission characteristics are: the plane wave expansion method (PWE), finitedifference time-domain(FDTD), transfer matrix method (TMM), finite elementmethod(FEE) and so on. In this article, the study mainly dues with the figures of MEEP,which has good two-dimensional photonic crystal transmittance and MPB on the band gapof two-dimensional photonic crystal. The study of the impact of changes in the structure oftransmittance and band gap, provides a theoretical basis for the experimental productionand applications.All-LED is considered an important element in the future all-optical informationprocessing technology,and photonic crystal optical flow as a control platform will becomea wholly-LED research foundation. Heterojunction structure based on photonic crystalall-LED is currently a hot topic. To get a much better one-way transmissioncharacteristics is a goal of the study. By constantly changing the two-dimensional photoniccrystals is much easier than looking for a much higher rate designed transmissive andmore simple full LED photonic crystal structure.According to the above theory to design aheterojunction photonic crystal diode with optimization surface, by continuouslysimulation and optimization through non-orthogonal photonic crystal structure at theheterojunction interface.Which in turns enhanced photonic crystal diode unidirectionaltransmission and transmission bandwidth. Then design a simple two-dimensional siliconphotonic crystal slab nano-cavities air slots on the SOI silicon heterojunction tablet.By changing the composition of the two-dimensional photonic crystal surfacestructure of the heterojunction orthogonal design,can improve a variety of high-contrastfull-LED unidirectional transmission, as well as achieving a one-way transmission withina wider band gap. The designing of a novel and simple two-dimensional photonic crystalslab nano-cavities air tank on SOI silicon heterojunction,has greatly improved the qualityfactor of the microcavity, which makes the air tank nano chambering of light muchstronger.