中文摘要：

采用有限元法,研究了基于石墨烯/金属混合纳米光栅的太赫兹（THz）滤波器。混合光栅可构成纳米腔阵列,利用腔中磁场法布里-珀罗谐振效应,制作了THz滤波器。该滤波器对波长的选择不易受外界环境的影响,而且其滤波波长可动态调控;另外,可通过增加石墨烯的层数增强其滤波能力。

英文摘要：

A terahertz （THz） filter based on graphene/metal hybrid nanogratings is studied with the finite element method. Nanoeavity arrays can be formed by the hybrid gratings. A THz filter is prepared by using the magnetic Fabray-Perot resonance effect in the nanocavity. The wavelength choice performance of this filter is unaffected by the external environments and the filtering wavelength can also be dynamically controlled. In addition, the filtering performance of this filter can be enhanced via the increase of the graphene layer number.