.Properties of defect mode and optical enhancement of 1D photonic crystals with a defect layer of negative refractive index material[J].Optoelectronics Letters,2005,1(3):198-200 Properties of defect mode and optical enhancement of 1D photonic crystals with a defect layer of negative refractive index material CHEN Xian-feng SHEN Xiao-ming JIANG Mei-ping SHI Du-fang [1]Department of Information Science, Jiangsu Polytechnic University, Changzhou 213016, China [2]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China Abstract:       The band gap properties of one-dimensional photonic crystals with a defect layer of negative refractive index materials are studied. The defect mode width is bigger than that of conventional one-dimensional photonic crystals with a defect layer of positive refractive index materials. The defect mode of the former is different from that of the latter, shifts towards the direction of high frequency (short wavelength), and has a bigger shifting velocity. Furthermore the effects on the transmission properties of the former photonic crystals caused by change in the position of the defect layer of negative refractive index are investigated. Finally the optical enhancement of the former photonic crystals is also investigated. Hits: 3681 Download times: 180 View Full Text    Download reader