期刊
OPTICS EXPRESS
卷 19, 期 10, 页码 9976-9985出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.009976
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资金
- National Natural Science Foundation of China [10804004, 10821062, 90921008]
- National Basic Research Program of China [2007CB307001, 2009CB930504]
Using strong couplings of different Fabry-Perot (FP) resonators in metal-insulator-metal waveguides, a compact plasmonic wavelength demultiplexer is numerically demonstrated with high wavelength resolution. In the demultiplexer, it is found that new right-angle resonators emerge with bandwidth narrower than that of the isolated FP resonators. These narrowband right-angle resonators interfere with the broadband FP resonators, resulting in Fano-line shapes in the transmission spectra. Consequently, these sharp and asymmetric Fano-line shapes considerably increase the resolution of wavelength demultiplexing, which is significantly narrower than the full width of the isolated FP resonator. (C) 2011 Optical Society of America
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