Theoretical analysis of a nanoscale plasmonic filter based on a rectangular metal-insulator-metal waveguide
Theoretical analysis of a nanoscale plasmonic filter based on a rectangular metal-insulator-metal waveguide
复制标题
基于矩形金属-绝缘体-金属波导的纳米级等离子体滤波器的理论分析
DOI：
10.1088/0022-3727/43/38/385102
复制
发表时间：
2010-09-29
影响因子：
3.4
通讯作者：
Cui, Yiping
中科院分区：
文献类型：
--
作者：
Yun, Binfeng;Hu, Guohua;Cui, Yiping
提出了一种基于金属-绝缘体-金属波导组成的矩形环形谐振器的紧凑型纳米级表面等离子体激元带通滤波器。利用时域有限差分法，详细分析了结构参数对SPP带通滤波器传输特性的影响。结果表明，所提出的SPP滤波器具有较窄的透射峰，并且可以通过改变谐振器的腔长来线性调谐相应的谐振波长。此外，还可以通过改变输入/输出MIM波导和谐振器之间的耦合间隙来调节通带的透射率。此外，还考虑了金属损耗和色散对滤光片响应的影响。这种简单的带通SPP滤波器非常适合于高密度SPP光波导的集成。
A compact and nanometric surface plasmon polariton (SPP) band-pass filter based on a rectangular ring resonator composed of metal-insulator-metal waveguides is proposed. Using the finite difference time domain method, the effects of the structure parameters on the transmission characteristics of this SPP band-pass filter are analysed in detail. The results show that the proposed SPP filter has narrow transmission peaks and the corresponding resonance wavelengths can be linearly tuned by altering the resonator's cavity length. Moreover, the transmission ratios of the pass bands can be tuned by changing the coupling gaps between the input/output MIM waveguides and the resonator. Also the metal loss and dispersion effects on the filter responses are included. The simple band-pass SPP filter is very promising for high-density SPP waveguide integrations.