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27 November 2012 Subwavelength dielectric-loaded plasmonic waveguides based on a core-shell structure
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A new type of subwavelength plasmonic waveguide based on a core-shell structure has been proposed. It is based on a semicylinder-shape dielectric-loaded plasmonic waveguide supporting the excitation of surface plasmon polaritons (SPPs). Simulation results reveal that the proposed waveguide exhibit a better trade-off in terms of mode localization and propagation length when compared to the traditional dielectric-loaded plasmonic waveguide. In addition, a ring resonator formed with the proposed waveguide shows a perfect performance with 1.8nm bandwidth and 23dB extinction ratio.
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Bing Shen, Yongqing Huang, Xiaomin Ren, Qi Wang, Xia Zhang, Xiaofeng Duan, Dong Zhang, and Jinghua Hu "Subwavelength dielectric-loaded plasmonic waveguides based on a core-shell structure", Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 855505 (27 November 2012);

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