期刊
PLASMONICS
卷 8, 期 2, 页码 1017-1022出版社
SPRINGER
DOI: 10.1007/s11468-013-9504-3
关键词
Subwavelength; Plasmonic; Comb-like filter; Resonators
资金
- National Basic Research Program of China [2011CB301800]
- Chinese Ministry of Education [313049]
- Southwest Jiaotong University
A subwavelength plasmonic comb-like filter is proposed by using dual symmetric slot cavities which are placed between two parallel metal-insulator-metal (MIM) structure waveguides. The structure can be considered as a resonance loop which consists of slot cavity resonators and MIM waveguide resonators. The reflective wavelength range and channel spacing are determined by the lengths of slot cavities and MIM waveguides, respectively. Three, four, and five reflective channels with high reflection are achieved in a small wavelength range. Higher channel count can be available by increasing the length or the real part of effective index of MIM waveguides. Such a device can find applications in various optical systems such as wavelength demultiplexing components.
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