| Affiliation: | (1) Center for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, 310027 Yu-Quan, Hangzhou, P.R. China;(2) Department of Electromagnetic Theory, Royal Institute of Technology, 10044 Stockholm, Sweden |
| Abstract: | A 2-state genetic algorithm (GA) approach is used to design a two-dimensional (2D) anisotropic photonic crystal of square lattice with a maximal absolute band gap. The unit cell is devided equally into many small squares, and each filling pattern of squares with two dielectric materials corresponds to a binary number. As a numerical example, the GA gives a 2D Te structure with a relative width of the absolute band gap of about  . After a further optimization, a new structure is obtained with a relative width of the absolute band gap of about  .Received: 1 November 2003, Published online: 9 April 2004PACS: 42.70.Qs Photonic bandgap materials - 78.20.Ci Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity) - 02.70.-c Computational techniques |
