SeminarsBand Gap Optimization for Photonic Crystals (Part II: Result and Discussion)
141
reads
Photonic Band Gap (PBG) materials are artificial, periodic, dielectrics that enable engineering of the most fundamental properties of electromagnetic waves. These properties include the laws of refraction, diffraction, and spontaneous emission of light. The optimal design of photonic band gaps for two-dimensional hexagon is considered. We use the finite element method to get the discretization. The dielectric function is smooth and changed by a generalized gradient ascent method. Numerical results show that the maximum band-gap ratio for hexagonal structure which consists of silicon and air is about 24% for simultaneous transverse magnetic and transverse electric modes.
reads
Yu-Chen Shu
2009-02-27
15:30:00 - 17:00:00
308 , Mathematics Research Center Building (ori. New Math. Bldg.)
Photonic Band Gap (PBG) materials are artificial, periodic, dielectrics that enable engineering of the most fundamental properties of electromagnetic waves. These properties include the laws of refraction, diffraction, and spontaneous emission of light. The optimal design of photonic band gaps for two-dimensional hexagon is considered. We use the finite element method to get the discretization. The dielectric function is smooth and changed by a generalized gradient ascent method. Numerical results show that the maximum band-gap ratio for hexagonal structure which consists of silicon and air is about 24% for simultaneous transverse magnetic and transverse electric modes.