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Response Line-Shapes in Compact Coupled Plasmonic Resonator Systems

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Abstract

A compact plasmonic coupled-resonator system, consisting of a stub resonator and baffles in the metal–insulator–metal waveguide, is numerically investigated with the finite element method. Simulations show that sharp and asymmetric response line-shapes can occur in the system. The asymmetric line-shapes in the transmission spectra depend on the relative positions of the resonant wavelengths between the single-stub resonator and the inner resonator constructed by the baffle and the stub resonator, while the other part of the transmission spectra (except the asymmetric part) maintains the spectral features of the structure constructed by the baffles. An analytic model and a relative phase analysis based on the scattering matrix theory are used to describe and explain this phenomenon. These sharp and asymmetric response line-shapes are important for improving the nano-plasmonic devices’ performances.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (grant nos. 11204018, 61177085, 60937003, 51172030, 11134001, and 90921008) and the National Basic Research Program of China (grant nos. 2010CB923200, 2009CB930504, and 2013CB328704).

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Authors and Affiliations

  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Jianjun Chen, Ru Zhang, Zhongliang Deng & Jinghua Xiao

  2. School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Jianjun Chen, Ru Zhang & Jinghua Xiao

  3. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871, China

    Zhi Li & Qihuang Gong

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  1. Jianjun Chen
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  2. Zhi Li
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  3. Ru Zhang
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  4. Zhongliang Deng
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  5. Jinghua Xiao
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  6. Qihuang Gong
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Correspondence to Jianjun Chen.

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Chen, J., Li, Z., Zhang, R. et al. Response Line-Shapes in Compact Coupled Plasmonic Resonator Systems. Plasmonics 8, 1129–1134 (2013). https://doi.org/10.1007/s11468-013-9520-3

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  • DOI: https://doi.org/10.1007/s11468-013-9520-3

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