Hua Jiaojiao, Wu Fan, Xu Zhongfeng, Wang Wenhui
School of science, Xi'an Jiaotong University, Xi'an, 710049, China.
Sci Rep. 2016 Sep 28;6:34418. doi: 10.1038/srep34418.
Surface plasmon polaritons (SPPs)-based nanowire (NW) waveguides demonstrate promising potentials in the integrated nanophotonic circuits and devices. The realization of controlling SPPs propagation in NWs is significant for the performance of nanophotonic devices when employed for special function. In this work, we report the effect of symmetry breaking degrees on SPPs propagation behavior in manually fabricated branched silver NW structures. The symmetry breaking degree can be tuned by the angle between main NW and branch NW, which influences the emissions at the junction and the main NW terminal in a large extent. Our results illustrate the significance of symmetry breaking degree on SPPs propagation in NW-based waveguides which is crucial for designing the future nanophotonic circuits.
基于表面等离激元极化激元（SPPs）的纳米线（NW）波导在集成纳米光子电路和器件中展现出了巨大的潜力。当用于特殊功能时，实现对纳米线中SPPs传播的控制对于纳米光子器件的性能至关重要。在这项工作中，我们报告了对称性破缺程度对人工制备的分支银纳米线结构中SPPs传播行为的影响。对称性破缺程度可以通过主纳米线和分支纳米线之间的角度进行调节，这在很大程度上影响了节点处和主纳米线末端的发射。我们的结果说明了对称性破缺程度对基于纳米线的波导中SPPs传播的重要性，这对于设计未来的纳米光子电路至关重要。
