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Nanoscale Surface Plasmon All-Optical Diode Based on Plasmonic Slot Waveguides

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Abstract

A nanoscale surface plasmon all-optical diode is proposed based on a plasmonic slot waveguide having an asymmetric plasmonic grating in the center. The asymmetric configuration of the plasmonic grating and the unique dispersion relations of the plasmonic slot waveguide ensure the nonreciprocal transmission properties. High transmittance contrast ratio of 1,150 is achieved theoretically. The performance of the surface plasmon all-optical diode does not have any high power requirement. This may open a new way for the study of integrated photonic devices based on surface plasmons.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China under grants 61077027, 10874010, 10821062, 90921008, and 10434020 and the National Basic Research Program of China under grant 2007CB307001.

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Authors and Affiliations

  1. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871, People’s Republic of China

    Xiaoyong Hu, Yingbo Zhang, Xinan Xu & Qihuang Gong

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  1. Xiaoyong Hu
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  2. Yingbo Zhang
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  3. Xinan Xu
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  4. Qihuang Gong
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Correspondence to Xiaoyong Hu or Qihuang Gong.

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Hu, X., Zhang, Y., Xu, X. et al. Nanoscale Surface Plasmon All-Optical Diode Based on Plasmonic Slot Waveguides. Plasmonics 6, 619–624 (2011). https://doi.org/10.1007/s11468-011-9243-2

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  • DOI: https://doi.org/10.1007/s11468-011-9243-2

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