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In this paper, we propose a plasmon-induced transparency (PIT) metamaterialstructure composed of Ag nanomaterials with polarization sensitivity. Themetamaterial model consists of three bright modes with different resonantfrequencies. The optical properties of the structure are further investigatedusing finite difference time domain (FDTD) method. The results show that theconversion between single-band PIT and dual-band PIT effects can be achieved bychanging the polarization degree of the incident light, the number oftransparent windows can be changed from one to two, and the process isaccompanied by the conversion of bright and dark modes and the change of theresonance wavelength of the transmission peak. In addition, When the light ispolarized in the Y-direction, the two transparency windows have differentrefractive index sensitivities, with FOM values of 5.94/RIU and 5.65/RIU,respectively.

Dynamically tunable electromagnetically induced transparency-like metamaterial structure based on polarization sensitivity