Numerical Simulation Analysis of an Optical Virtual Probe Based on Surface Plasmon Polaritonic Band-gap Structures
A 2D optical virtual probe based on surface plasmon polaritons (SPP) in a bandgap structure with a rectangular profile is proposed and investigated numerically by means of finite difference time domain (FDTD) method. The dependence of the distributions of the confined optical fields on different structure parameters is numerically analyzed. The results indicate that with the proper structure design, the full width at half maximal (FWHM) of the confined beam can keep constant in a certain distance range, and the field intensity of the confined virtual probe can be enhanced greatly by SPP. Compared with the optical virtual probe based on interference of evanescent waves, this type of virtual probe has merits of high intensity and high sensitivity, and is likely to promise for the applications in nano-photonics devices based on SPP.
Qingyan Wang Jia Wang Shulian Zhang
State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision Instruments, Tsinghua University, Beijing, 100084, China
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
1509-1514
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）