The Theory Research On Omni-directional Dielectric Reflector Of One-Dimensional Photonic Crystal

Photonic crystal is a manual construct with different dielectric periodic array in the space. As an unnatural crystal, it has the same character with the solid crystal: such as has definite photonic band-gap construct, has the stop band in some frequency. The appearance of photonic crystal offers an easier, more flexible method to control the light wave's movement. It cans great improve the performance of the integration of optical path which base on the different construct of photonic crystal. Recent years, the theories about photonic crystal developed quickly, and some kinds of new devices have been designed. The experiments also have made a great progress although developed a little slowly. In near-infrared, the design of photonic crystal in visible light area can be realized. The study of photonic crystal has a deep effect on the optical field. Because the work in photonic crystal has many aspects, so this paper mainly analyzes photonic band gap (PBG) theory and discusses its practical application—omni-directional dielectric reflector.Omni-directional dielectric reflector as the third generation of reflection device, it has the characters of all direction and high reflectivity, it integrates the advantages of dielectric and metal reflection device. In the basic analyzing of the omni-directional dielectric reflector fundamental, this paper deeply analyzes some crucial factors that affect omni-directional reflection band of the one-dimensional photonic crystal, and provides a design method for omni-directional dielectric reflector. Through the complete analyses of the one-dimensional photonic crystal, this paper presents a method which suit for some special frequency and broad omni-directional reflection band. If the selection of material is allowable, omni-directional dielectric reflector working in visible light and ultraviolet could become possible.Furthermore, this paper also summarizes the existing producing methods of photonic crystal, modern manufacturing techniques and the research development of material which affects the produce of photonic crystal. At the same time, this paper quotes and analyzes the latest research developments of the one-dimension photonic crystal. The one-dimension photonic crystal adopts traditional film producing techniques, it is easy to realize by experimental ways, so it has widely been used in practical applications.At last, this paper discusses the prospect and the present problems of photonic crystal. The behavior of light traveling in PC is much more complicated than that in normal medium, it's very complex. Researching how light propagates in photonic crystal can enrich our knowledge about it. Supper prism effect of photonic crystal has potential use in near field imaging and WDM system.