光学学报, 2014, 34 (s2): s223005, 网络出版: 2014-12-02
基于双层石墨烯波导的可调谐布拉格光栅滤波器 
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Tunable Bragg Grating Filter Based on the Double Graphene Layer Waveguides
光栅 布拉格光栅滤波器 时域有限差分法 石墨烯 表面等离子体 gratings Bragg grating filter finite difference time domain method graphene surface plasmons
摘要
由于石墨烯与电介质交界面所产生的表面等离子体效应，双层石墨烯波导器件尺寸可以压缩到纳米量级，同时由于石墨烯的电可调特性，可以利用外电压实现波导传输特性的灵活调控。基于这些特性，提出一种可调谐双层石墨烯波导布拉格光栅滤波器。时域有限差分法仿真结果证明，通过改变石墨烯的化学势可以实现滤波器阻带位置的调整。
Abstract
Because of the generated surface plasmons at the interface between the graphene and the dielectric, the device size of double graphene layer waveguide can be compressed in nano scale. Meanwhile, due to the tunability of the graphene, the transmission properties of graphene waveguide can be flexibly modulated by external voltage. According to these characteristics, a tunable double graphene layer Bragg grating filters is proposed. And the finite difference-time domain (FDTD) simulation results show that the stopband position of filter can be adjusted by changing the chemical potential of graphene.
冯霞, 闫连山, 王鲁俊, 潘炜, 罗斌. 基于双层石墨烯波导的可调谐布拉格光栅滤波器[J]. 光学学报, 2014, 34(s2): s223005. Feng Xia, Yan Lianshan, Wang Lujun, Pan Wei, Luo Bin. Tunable Bragg Grating Filter Based on the Double Graphene Layer Waveguides[J]. Acta Optica Sinica, 2014, 34(s2): s223005.
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