Chen Pixin, Liang Ruisheng, Huang Qiaodong, Yu Zhe, Xu Xingkai
Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China.
Opt Express. 2011 Apr 11;19(8):7633-9. doi: 10.1364/OE.19.007633.
The wide Metal-Insulator-Metal (WMIM) structure is proposed and its characteristics are analyzed numerically using finite-difference time-domain (FDTD) method. Simulations show that power can be periodically transferred between its two Metal-Insulator (MI) interfaces while power is injected asymmetrically. Novel plasmonic filters and optical directional couplers (ODCs) based on WMIM structure are proposed, which work similarly as traditional dielectric devices. Due to the simple structures without thin metal gaps, our result may provide an alternative way to realize the fabrication of nanoscale optical devices.
提出了一种宽金属-绝缘体-金属（WMIM）结构，并使用时域有限差分（FDTD）方法对其特性进行了数值分析。模拟结果表明，当功率不对称注入时，功率可以在其两个金属-绝缘体（MI）界面之间周期性地传输。基于WMIM结构提出了新型等离子体滤波器和光定向耦合器（ODC），它们的工作方式与传统介电器件类似。由于结构简单且没有薄金属间隙，我们的结果可能为实现纳米级光学器件的制造提供一种替代方法。
