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Published on: December 22, 2015
Band-pass plasmonic slot filter with band selection and spectrally splitting capabilities
Feifei Hu1, Huaxiang Yi, Zhiping Zhou
1State Key Laboratory on Advanced Optical Communication Systems and Networks, Peking University, Beijing, 100871, China.
Abstract:
An ultra-compact surface plasmon polaritons (SPPs) narrow band-pass filter based on a slot cavity is proposed and numerically investigated. Attributed to the coupled resonances in the cavity, the filter demonstrates pass-band selection capability. Also, by varying the positions of output waveguides, the filter shows the spectrally splitting function. Moreover, the combination of the adjustments to the length/width of the slot cavity and to the coupling distance provides more flexibility in design for the locations and widths of the pass-bands of the proposed filter.
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