Light Propagation in Curved Silver Nanowire Plasmonic Waveguides
Light Propagation in Curved Silver Nanowire Plasmonic Waveguides
复制标题
弯曲银纳米线等离子体波导中的光传播
DOI：
10.1021/nl104514m
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发表时间：
2011-04-01
期刊：
影响因子：
10.8
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Wang, Wenhui;Yang, Qing;Wang, Zhong Lin
由金属纳米线制成的等离子体波导在集成光子器件和电子器件中具有重要的应用潜力。在光传播期间由NW的弯曲引起的能量损失在影响其作为等离子体激元波导的性能方面是关键的。我们报告的弯曲晶体银NW等离子体波波导的纯弯曲损耗的特性，通过解耦的弯曲和传播引起的能量损失。还测定了纯弯曲引起的能量衰减系数，其与弯曲半径呈指数关系。采用时域有限差分法（FDTD）进行了理论模拟，模拟结果与实验结果吻合较好。
Plasmonic waveguides made of metal nanowires (NWs) possess significant potential for applications in integrated photonic and electronic devices. Energy loss induced by bending of a NW during light propagation is critical in affecting its performance as a plasmonic waveguide. We report the characterization of the pure bending loss in curved crystalline silver NW plasmonic waveguicles by decoupling the energy loss caused by bending and propagation. The energy attenuation coefficiency due purely to bending was also determined, which exhibited an exponential relationship with the bending radius. Finite-difference-time-domain (FDTD) methods were utilized for theoretical simulations, which matched the experimental results well.