期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 43, 期 38, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/43/38/385102
关键词
-
资金
- National Science Foundation of China [60907025]
- Science Foundation of Southeast University [KJ2009358]
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.
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