Effect of Refractive Indez of Dielectric on Transmission Properties for Metal/Dielectric/Metal Photonic Crystal
The effect of refractive index of dielectric on transmission properties for metal/dielectric/metal photonic crystal (M/D/MPhC) by changing a thin dielectric layer was studied experimentally.We measured zero-order transmission spectra of three different M/D/MPhC samples in the middle infrared region and found that the transmission peaks shifted regularly along with the refractive index change,owing to the role of surface plasmon polaritons (SPP) coupling in the M/D/MPhC. The position of transmission peak for M/D/MPhC is not only determined by the periodic structure on top Au film but is also affected by the refractive index of intermediate dielectric.By analyzing the relationship between transmission peaks and effective refractive index of a thin dielectric layer sandwiched by two gold layers,we find that the transmission properties for M/D/MPhC depend strongly on both the material property and the refractive index of dielectric being sandwiched by two metal films. The transmission peak sensitive nature to the refractive index of a thin dielectric layer in M/D/MPhC is promising in applications of biochemical sensing and tunable integrated plasmonic devices.
transmission enhancement M/D/MPhC refractive indez of dielectric SPP
Gongli Xiao Yiping Huang Zongming Bao
State Key Laboratory of ASIC & System,Department of Microelectronics,Fudan University,Shanghai 20043 State Key Laboratory of ASIC & System,Department of Microelectronics,Fudan University,Shanghai 20043
国际会议
2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)
长沙
英文
1043-1046
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）