Wang Jicheng, Wang Xiaosai, Shao Hongyan, Hu Zheng-Da, Zheng Gaige, Zhang Feng
School of Science, Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi, 214122, China.
Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, 912, Beijing, 100083, China.
Nanoscale Res Lett. 2017 Dec;12(1):9. doi: 10.1186/s11671-016-1791-0. Epub 2017 Jan 5.
Plasmonically induced transparency (PIT) in a multicavity-coupled graphene-based waveguide system is investigated theoretically and numerically. By using the finite element method (FEM), the multiple mode effect can be achieved, and blue shift is exhibited by tunable altering the chemical potential of the monolayer graphene. We find that the increasing number of the graphene rectangle cavity (GRC) achieves the multiple PIT peaks. In addition, we find that the PIT peaks reduce to just one when the distance between the third cavity and the second one is 100 nm. Easily to be experimentally fabricated, this graphene-based waveguide system has many potential applications for the advancement of 3D ultra-compact, high-performance, and dynamical modulation plasmonic devices.
对多腔耦合石墨烯基波导系统中的表面等离激元诱导透明（PIT）进行了理论和数值研究。通过使用有限元方法（FEM），可以实现多模效应，并且通过可调谐改变单层石墨烯的化学势呈现蓝移。我们发现，石墨烯矩形腔（GRC）数量的增加会实现多个PIT峰。此外，我们发现当第三个腔与第二个腔之间的距离为100 nm时，PIT峰减少到只有一个。这种基于石墨烯的波导系统易于通过实验制造，对于推进3D超紧凑、高性能和动态调制等离子体器件具有许多潜在应用。
