Plasmon-Induced Transparency and High-Performance Slow Light in a Plasmonic Single-Mode and Two-Mode Resonators Coupled System
Plasmon-Induced Transparency and High-Performance Slow Light in a Plasmonic Single-Mode and Two-Mode Resonators Coupled System
复制标题
等离激元单模和双模谐振器耦合系统中的等离激元诱导透明度和高性能慢光
DOI：
10.1109/jlt.2017.2648819
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发表时间：
2017-05-01
影响因子：
4.7
通讯作者：
Xia, Jingsong
中科院分区：
文献类型：
--
作者：
Lu, Qi;Wang, Zhenzheng;Xia, Jingsong
研究了等离子体激元单模和双模谐振腔耦合系统的等离子体激元诱导透明和慢光特性。裸态PIT效应源于缝隙腔中的辐射驻波模与环形腔中的两个次辐射行波模之间的相消干涉。建立了描述该系统的理论模型，分析结果与数值模拟结果吻合较好。我们的结构和类似的耦合谐振器结构之间的差异。通过调整结构参数可以调节透明窗口，并详细讨论了两种类型的PIT线型。数值计算结果表明，具有弱分辨和等双峰的PIT窗口具有高性能的慢光。该系统的延迟带宽积大于1，具有超低色散，延迟为1比特，脉冲失真可忽略不计。
We investigatethe plasmon-induced transparency (PIT) and slow-light properties in a plasmonic single-mode and two-mode resonators coupled system. The bare-state PIT effect originates from the destructive interference between a radiant standing-wave mode in the slot cavity and two subradiant travelling-wave modes in the ring resonator. A theoretical model is established to describe this PIT system, and the analytical results agree well with the numerical simulations. The difference between our structure and similar coupled resonators structures is shown. The transparency window can be tuned by adjusting the structural parameters, and two types of PIT lineshape are discussed in detail. The numerical results reveal that the PIT window with weakly resolved and equal doublet peaks exhibits high-performance slow light. A delay-bandwidth product larger than 1 and ultralow dispersion are obtained, and a delay of 1 bit with negligible pulse distortion is achieved in the proposed system.