Study Of Optical Property Of One-dimensional Photonic Crystal

One-dimensional photonic crystal is made up of the two materials the refractive index n1 and n2 respectively, alternately arranged in one direction component, while in the other two directions are evenly distributed. Thus, the traditional multi-layer membrane structure is also a special one-dimensional photonic crystal. As the one-dimensional photonic crystal has the advantages of being simple production to attract particular concern, likely to become key material in the all-optical communications field .It have a high theoretical value and broad application prospects. In this paper, both theoretical and experimental band structure and its characteristics were studied, in order to study a variety of one-dimensional photonic crystal properties. The main contents include:1. Introduce the basic concepts of photonic crystals and photonic crystal applications the basic principles used, including photonic crystals with theories, it illustrates the development of photonic crystals and several applications.2. According to the transfer matrix method using C language programming, calculating the one-dimensional photonic crystal band structure and transmission characteristics. One-dimensional photonic crystal in the visible range of S wave and P wave of the transmission spectra were simulated using such methods. Analysis the impact of different polarization incident angle and the number of change in the dielectric layer on one-dimensional photonic band gap by changes in the transmission spectra. There will be a photonic band gap, when the photonic crystal cycle number reaches a certain value. With further increase in the number of periods, there will be more obvious increases reaching to a peak. Then the rate of increase gradually decreased. And the band gap center wavelength ?0 position remains unchanged. Lattice constant and filling rate have great influence to some extent determines the band gap width, center wavelength. Regardless of the P wave or S wave, photonic band gap move to the short wavelength direction with the increasing incident angle. When the S wave incident photonic crystals, photonic band gap will be wider with incident angle increasing. When the P wave incident photonic crystals, photonic forbidden band will be wider with the incident angle increasing. Found that the thickness of the transmission defect mode peak has a clear regulatory role, the transmission peak will increase as the thickness increases. Then the peak transmission rate will immediately reduce with the thickness gradually increasing. And with the increase of the refractive index of defect layer, the center wavelength of defect mode position also shifted to lower frequency, while the peak transmission increases.3. Using vacuum coating methods produced one-dimensional photonic crystals which constituted by zirconium dioxide and silicon dioxide two mediums, and testing one-dimensional photonic samples. By comparing the results with theoretical calculations, found that experimental results tally with calculated results.