Propagation of electromagnetic waves in a one-dimensional photonic crystal containing two defects

We study analytically using the green function approach,the transmission through a one-dimensional photonic crystal formed by a periodic stack of two different materials. the refractive index of these materials are n1 = 1.47 and n2 = 1.87 and their thicknesses are d1 = 0.4 and d2 = 0.6. we insert in the one-dimensional photonic crystal,two defect layers of refractive index n01 and n02,and their thicknesses d01and d02.the numerical results show the apparition of defects modes inside the gap caused by the introduction of defect layers in the photonic structure. the position of the defects layers affect the transmission peaks; when defects layers are near in structure,the transmission peaks are distant in the band gap,and when defect layers are distant,the transmission peaks appear to be approached. © 2017,university of mohammed premier oujda morocco.