1 Plasmonic refractive index sensor with high figure of 2 merit based on concentric - rings resonator 3
نویسندگان
چکیده
A plasmonic refractive index (RI) sensor based on metal-insulator-metal (MIM) 11 waveguide coupled with concentric double rings resonator (CDRR) is proposed and investigated 12 numerically. Utilizing the novel supermodes of the CDRR, the FWHM of the resonant wavelength 13 can be modulated, and a sensitivity of 1060 nm/RIU with high figure of merit (FOM) 203.8 is realized 14 in the near-infrared region. The unordinary modes as well as the influence of structure parameters 15 on the sensing performance are also discussed. Such plasmonic sensor with simple framework and 16 high optical resolution could be applied to on-chip sensing systems and integrated optical circuits. 17 Besides, the special cases of biosensing and triple rings are also discussed. 18
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تاریخ انتشار 2017