  In this paper, a new structure is proposed which is expected to realize
dual-band electromagnetically induced transparency (EIT)-like effect in
terahertz spectrum. It can be regarded as a metamaterial of grating-like
elements composed of dual-band U-shaped resonators. The near-field coupling
between bright modes can produce EIT-like effect. After optimizing the
parameters, our numerical simulated results are in good agreement with the
theoretical analysis. The EIT-like effect can significantly reduce the group
speed near the transparent window, may gain more significant potential
applications in slow-light transmission and optical storage.
