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Related Experiment Videos

Coupled-resonator-induced plasmonic bandgaps.

Yujia Wang, Chengwei Sun, Qihuang Gong

    Optics Letters
    |October 14, 2017
    PubMed
    Summary

    Researchers created subwavelength plasmonic bandgaps using waveguide-resonator structures, significantly shrinking device size and enabling high integration for photonic circuits.

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    Area of Science:

    • Plasmonics
    • Nanophotonics
    • Metamaterials

    Background:

    • Conventional plasmonic crystals use periodic metallic structures.
    • These structures are larger than wavelengths, limiting photonic integration density.

    Purpose of the Study:

    • To experimentally realize plasmonic bandgaps in subwavelength structures.
    • To reduce the size of plasmonic bandgap devices for higher integration.

    Main Methods:

    • Utilized a coupled-resonator effect in subwavelength waveguide-resonator structures.
    • Developed an analytic model and phase analysis for explanation.
    • Performed experimental and simulation studies.

    Main Results:

    • Achieved subwavelength plasmonic bandgaps, reducing structure size to approximately λ²/13.
    • Demonstrated large fabrication tolerances exceeding 20%.
    • Expanded the physics of plasmonic bandgaps beyond periodic metallic structures.

    Conclusions:

    • Subwavelength waveguide-resonator structures offer a pathway to miniaturized plasmonic bandgaps.
    • The robust and compact nature facilitates high integration on chips.
    • This approach enhances the potential for advanced photonic integration circuits.

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