文章基本信息

标题：Tuning the hybridization of plasmonic and coupled dielectric nanowire modes for high-performance optical waveguiding at sub-diffraction-limited scale
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作者：Yusheng Bian ; Qihuang Gong
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2014
卷号：4
DOI：10.1038/srep06617
出版社：Springer Nature
摘要：We report the realization of low-loss optical waveguiding at telecommunication wavelength by exploiting the hybridization of photonic modes guided by coupled all-dielectric nanowires and plasmon waves at planar metal-dielectric interfaces. The characteristics of the hybrid plasmon polaritons, which are yielded by the coupling between two types of guided modes, can be readily tuned through engineering key structural parameters of the coupled nanowires and their distances to the metallic surfaces. In addition to exhibiting significantly lower attenuations for similar degrees of confinement as compared to the conventional hybrid waves in single-dielectric-nanowire-based waveguides, these hybridized plasmonic modes are also capable of enabling reduced waveguide crosstalk for comparable propagation distances. Being compatible with semiconductor fabrication techniques, the proposed guiding schemes could be promising candidates for various integrated photonic devices and may lead to potential applications in a wide variety of related areas.