Systematical research on the characteristics of a vertical coupled Fabry-Perot plasmonic filter
- 作者：Lin Liu ; Xia Hao ; angle13317224012@163.com ; Yutang Ye ; Juanxiu Liu ; Zhenlong Chen ; Yuncen Song ; Ying Luo ; Jing Zhang ; Liang Tan
- 关键词：Surface plasmon polariton ; Filter ; Fabry&ndash ; Perot
- 刊名：Optics Communications
- 出版年：2012
- 期刊代码：50_00304018
- 类别：ph
- 出版时间：15 May, 2012
- 卷：285
- 期：10-11
- 页码：2558-2562
- 文件大小：866 K
摘要
A nanometric surface plasmon polariton (SPP) filter based on a vertical coupled metal-insulator-metal (MIM) Fabry-Perot resonator is proposed and analyzed. The transmission characteristics of the SPP filter are analyzed in detail by using the finite difference time domain method. And the resonance condition derived by the numerical method is consonant with the analytic model based on the Fabry-Perot model, which includes the metal loss and dispersion effects. And the simulation results show that multiple transmission dips can be formed and the resonance wavelengths of the transmission dips can be altered by the Fabry-Perot cavity length and width. Also the extinction ratio and the quality factor of the filter are affected by the barrier thickness of the coupling region. The proposed nanometric plasmonic filter is simple and very promising for the SPP waveguides platform.