Trapping of surface plasmon waves in graded grating waveguide system
Trapping of surface plasmon waves in graded grating waveguide system
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DOI：
10.1063/1.4733477
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发表时间：
2012-07
影响因子：
4
通讯作者：
Guoxi Wang;Hua Lu;Xueming Liu
中科院分区：
文献类型：
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作者：
Guoxi Wang;Hua Lu;Xueming Liu
我们提出了一种具有显著慢光效应的渐变光栅等离子体系统，用于高限制表面等离子体波的传输。理论分析和数值模拟表明，SP波在等离子体波导中的局域位置与工作频率有关。结果表明，慢光效应随传输速率的增加而增强。所提出的超紧凑的配置提供了一个大的捕获带宽为90太赫兹，这可能会发现在慢光系统，特别是光学缓冲器的良好应用的优势。
We have proposed a graded grating plasmonic system with a significant slow-light effect for the propagation of high-confinement surface plasmon (SP) wave. Theoretical analysis and numerical simulations show that the localized position of SP wave in the plasmonic waveguide is dependent on the operating frequency. It is found that the slow-light effect exhibits an obvious enhancement with propagation. The proposed ultracompact configuration offers the advantage of a large trapping bandwidth of 90 THz, which may find excellent applications on slow-light systems, especially optical buffers.