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A Compact Graphene Modulator Based on Localized Surface Plasmon Resonance with a Chain of Metal Disks

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Abstract

Most graphene electro-optic modulators based on the electro-refractive modulation are composed of Mach-Zehnder interferometer or microring resonator structures and have a relative compact size comparing with dielectric ones. To further shrink the footprint, we use the localized surface plasmon resonance of a chain of three metal disks to realize a submicron graphene modulator, whose length can be reduced to less than 1 μm. The proposed graphene modulator has an extinction ratio of 5.5 dB with a length of only 740 nm. And the insertion loss, 3-dB bandwidth, and power consumption of the modulator are 1.9 dB, 83.4 GHz, and 8.55 fJ/bit respectively.

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Funding

This work was supported by the National Science Foundation of Jiangsu Province Grant (BK 20161429) and the National Natural Science Foundation of China under Grant (61601118).

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Authors and Affiliations

  1. Advanced Photonics Center, Southeast University, Nanjing, 210096, China

    Jinyu Luan, Pengfei Zheng, Huimin Yang, Guohua Hu, Ruohu Zhang, Binfeng Yun & Yiping Cui

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  1. Jinyu Luan
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  2. Pengfei Zheng
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  3. Huimin Yang
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  4. Guohua Hu
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  5. Ruohu Zhang
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  6. Binfeng Yun
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  7. Yiping Cui
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Correspondence to Binfeng Yun or Yiping Cui.

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Luan, J., Zheng, P., Yang, H. et al. A Compact Graphene Modulator Based on Localized Surface Plasmon Resonance with a Chain of Metal Disks. Plasmonics 14, 1949–1954 (2019). https://doi.org/10.1007/s11468-019-00995-w

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  • DOI: https://doi.org/10.1007/s11468-019-00995-w

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