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A plasmonic route for the integrated wireless communication of subdiffraction-limited signals

查看全文 作　　者：Hao Chi [1]Zhang;Le Peng [1]Zhang;Pei Hang [1]He;Jie [1]Xu;Cheng [1]Qian;Francisco J.Garcia-[2,3]Vidal;Tie Jun [1]Cui 高影响力作者 机构地区：[1]State Key Laboratory of Millimeter Waves,Southeast University,210096 Nanjing,China;[2]Departamento de Fisica Teorica de la Materia Condensada and Condensed Matter Physics Center(IFIMAC),Universidad Autonoma de Madrid,Madrid,Spain;[3]Donostia International Physics Center(DIPC),Donostia/San Sebastian,Spain高影响力机构 出　　处：《Light(Science & Applications)》索引2020年第9卷第1期,共9页高影响力期刊 基　　金：funded by the National Key Research and Development Program of China(Grant Nos.2017YFA0700201,2017YFA0700202,and 2017YFA0700203);by the National Natural Science Foundation of China(Grant Nos.61571117,61631007,61701108,and 61871127);by the 111 Project(Grant No.111-2-05);support from the QuantERA program of the European Commission with funding by the Spanish AEI through project PCI2018-09314;from the“Maria de Maeztu”program for Units of Excellence in R&D(MDM-2014-0377). 摘　　要：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. 关 键 词：COMMUNICATION spatially DIFFRACTION
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