Structure Design Of Two Dimensional Photonic Crystal

In recent years, the development of photonic Crystal is a revolution in the information age, such as the rapid development of semiconductor technology impact on information technology, particularly in information processing technology, the rapid development of science and technology makes the photonic crystal integrated technology and all optical electronic technology has become more and more mature. Due to the unique bandgap properties of photonic crystals, and find out a way to make the photonic crystal band gap maximum becomes the key to the development of the photonic crystal. In this paper, based on the two-dimensional photonic crystals structure, the crystal band structure optimization is studied and discussed, divided into the following three parts.(1)The photonic band gap system research, the concept of photonic crystal, and realize the importance of optimizing the band structure and methods, including the main characteristics of photonic crystal, theory research and practical application of the main problems in the present study. And through the establishment of mathematical model, simulation bandgap photonic crystal is discussed in detail, the simulation principle based on the plane wave expansion method.(2)The detailed study of the band structure of two-dimensional photonic crystals with different lattice structure comparison, on the basis of fixing the filling ratio and the dielectric constant ratio, simulate the band structure of different hole photonic crystal of different structure. By observing the simulation graph and analysis the data in,find out the best structure of different hole.(3)For the defects of the simulation results, on the basis of fixed dielectric constant, stimulate the different photonic crystals with the filling ratio from 0 to 1.Verify the result of fixed filling ratio, and analyzes the advantages and disadvantages of each structure of photonic crystal lateral comparison, and sums up the best filling ratio of different structure to provide theoretical guidance for the different practical fabrication of photonic device.