We propose a graphene based metasurface to investigate the function of switchable polarization selective wave manipulation in THz regime by using the finite-difference time-domain (FDTD) method. The proposed metasurface consists of two layers of graphene arrays, polymer dielectric spacer and a gold mirror film, which can be switched between two states by simply biasing the two graphene layers ON and OFF with the designed voltage and zero voltage without reconfiguring the Fermi energy distribution. One state is for x polarized wave manipulation and the other is for y polarization incidence. Then, the functions of switchable polarization selective anomalous reflection and focusing effect for 6 THz wave are realized by configuring the structure with specific values of Fermi energy. Moreover, we also designed the structure to focus at other spatial positions and another working frequency of 5.5 THz by reconfiguring the Fermi energy distributions.

The predecessor of China Optics was China Optics and Applied Optics Digest, which was founded in 1985. At that time, it was the only retrieval journal in the field of optics in China. At the end of 2008, China Optics and Applied Optics Digest was renamed 《中国光学》的前身是1985年创办的《中国光学与应用光学文摘》，当时是国内光学领域唯一的检索刊物。2008年底《中国光学与应用光学文摘》转型更名为《中国光学与应用光学》期刊，刊载内容突破了文摘的限制，正式成为学术刊物。