▎ 摘　　要

NOVELTY - The beam has a plating a layer of graphene strip along the y direction on the substrate 1, then paving a layer 2, then plating four triangular graphene blocks again, at last, paving the layer of 2, plating the layer with graphene strips along the x direction, the substrate is silicon. The thickness H1 is equal to 0.7 microns, material 2 is a dielectric layer with a silicon constant of 1.4, thickness H2 = H3 = 20 nm, the period of structure x direction is Px, Px= 10 microns. The period of the structure y direction is Py, Py= 10-10 m.m. USE - Terahertz polarization beam splitter for use in optoelectronic device. Uses include but are not limited to photoelectric switch, light modulator, light absorber, slow light device and various sensors. ADVANTAGE - The terahertz polarization beam splitter has high extinction ratio (PER) and low insertion loss (IL). The working frequency point of the polarizing beam can be tuned by changing the Fermi level of the graphene, which provides a reliable result based on the tunable polarizing device of graphene. The novel structure design and excellent performance is expected to be widely applied to the design of the optoelectronic device in the future. The three-graphene structure can realize the function of separating two orthogonal polarization states on the space. DESCRIPTION OF DRAWING(S) - The drawing shows the three-dimensional periodic unit structure schematic diagram of the terahertz polarization beam splitter based on graphene plasma induced transparency.