Yang Bao Jia, Zhou Yong Jin, Xiao Qian Xun
Opt Express. 2015 Aug 10;23(16):21434-42. doi: 10.1364/OE.23.021434.
We have investigated the fundamental and high-order spoof localized surface plasmons (LSPs) modes in the proposed corrugated ring resonator printed on a thin dielectric substrate with or without ground plane. An efficient and ease-of-integration method to excite spoof LSPs in the textured ring resonator has been adopted to suppress unwanted high-order modes and enhance fundamental modes. A multi-band-pass filter has been proposed and numerically demonstrated. Experimental results at the microwave frequencies verify the high performances of the corrugated ring resonator and the filter, showing great agreements with the simulation results. We have also shown that the fabricated device is sensitive to the variation of the refraction index of materials under test, even when the material is as thin as paper.
我们研究了印刷在有或没有接地平面的薄介质基板上的波纹环形谐振器中的基模和高阶类局域表面等离子体（LSPs）模式。采用了一种在纹理环形谐振器中激发类LSPs的高效且易于集成的方法，以抑制不需要的高阶模式并增强基模。提出并通过数值验证了一种多带通滤波器。微波频率下的实验结果验证了波纹环形谐振器和滤波器的高性能，与仿真结果高度吻合。我们还表明，即使被测材料薄如纸张，所制造的器件对其折射率的变化也很敏感。
