A plasmonic route for the integrated wireless communication of subdiffraction-limited signals
A plasmonic route for the integrated wireless communication of subdiffraction-limited signals
复制标题
亚衍射限制信号集成无线通信的等离子体路径
DOI：
10.1038/s41377-020-00355-y
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Tie Jun Cui
中科院分区：
文献类型：
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作者：
Hao Chi Zhang;Le Peng Zhang;Pei Hang He;Jie Xu;Cheng Qian;Francisco J. Garcia-Vidal;Tie Jun Cui
完美透镜、超透镜和时间反转镜可以支持和空间分离倏逝波，这是探测远场亚波长信息的基础。然而，这些方法的固有局限性阻碍了动态区分亚衍射限制信号的系统的发展。利用欺骗表面等离子激元（SPPs）的物理优点，我们证明了亚衍射限制信号可以在平面集成SPP信道上传输，具有低损耗、低信道干扰和高增益，并且可以以非常低的环境灵敏度辐射。此外，我们展示了如何在视距无线传输后区分空间耦合的深亚衍射限制信号。作为一个可视化的演示，我们利用我们的等离子体方案在亚波长信道上实现了两个电影在视线上的实时高质量无线通信，显示出比传统方法明显的优势。
Perfect lenses, superlenses and time-reversal mirrors can support and spatially separate evanescent waves, which is the basis for detecting subwavelength information in the far field. However, the inherent limitations of these methods have prevented the development of systems to dynamically distinguish subdiffraction-limited signals. Utilizing the physical merits of spoof surface plasmon polaritons (SPPs), we demonstrate that subdiffraction-limited signals can be transmitted on planar integrated SPP channels with low loss, low channel interference, and high gain and can be radiated with a very low environmental sensitivity. Furthermore, we show how deep subdiffraction-limited signals that are spatially coupled can be distinguished after line-of-sight wireless transmission. For a visualized demonstration, we realize the high-quality wireless communication of two movies on subwavelength channels over the line of sight in real time using our plasmonic scheme, showing significant advantages over the conventional methods.