Tunable Fano Resonance in Asymmetric MIM Waveguide Structure
AbstractA plasmonic waveguide coupled system that uses a metal-insulator-metal (MIM) waveguide with two silver baffles and a coupled ring cavity is proposed in this study. The transmission properties of the plasmonic system were investigated using the finite element method. The simulation results show a Fano profile in the transmission spectrum, which was caused by the interaction of the broadband resonance of the Fabry-Perot (F-P) cavity and the narrow band resonance of the ring cavity. The Fabry-Perot (F-P) cavity in this case was formed by two silver baffles dividing the MIM waveguide. The maximum sensitivity of 718 nm/RIU and the maximum figure of merit of 4354 were achieved. Furthermore, the effects of the structural parameters of the F-P cavity and the ring cavity on the transmission properties of the plasmonic system were analyzed. The results can provide a guide for designing highly sensitive on-chip sensors based on surface plasmon polaritons. View Full-Text
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Zhao, X.; Zhang, Z.; Yan, S. Tunable Fano Resonance in Asymmetric MIM Waveguide Structure. Sensors 2017, 17, 1494.
Zhao X, Zhang Z, Yan S. Tunable Fano Resonance in Asymmetric MIM Waveguide Structure. Sensors. 2017; 17(7):1494.Chicago/Turabian Style
Zhao, Xuefeng; Zhang, Zhidong; Yan, Shubin. 2017. "Tunable Fano Resonance in Asymmetric MIM Waveguide Structure." Sensors 17, no. 7: 1494.
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