A reciprocal electromagnetically induced transparency (EIT) effect is proposed in the complementary metasurface structure, which is composed of metal orthogonal strips beside a silicon substrate. The EIT effect of reciprocity is obtained whether the incident wave propagates from the positive (+z) or reverse (−z) direction. A multiband EIT window is also obtained in the structure of horizontal strip and substrate silicon as bright mode and vertical strip as dark mode by the finite difference time domain (FDTD) method. The transmission mechanism is interpreted by giving the current surface and electric field distributions at certain frequencies. A polarization insensitive EIT can be realized theoretically due to the structure is symmetrical in the x and y directions. The effective permittivity of the structure was calculated by the method of inversion to reveal the transmission spectra. These results can be applied in many areas, such as multiband slow-light devices, active sensin...

中文翻译：

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多频带相互极化不灵敏性在超表面上电磁感应产生的透明性

在互补的超表面结构中提出了相互的电磁感应透明性（EIT）效应，该结构由硅衬底旁边的金属正交条组成。无论入射波是从正（+ z）还是反向（-z）方向传播，都获得了互易性的EIT效果。通过有限差分时域（FDTD）方法，在水平条带和衬底硅的结构中，以亮模式和垂直条带为暗模式也获得了多频带EIT窗口。通过给出某些频率下的电流表面和电场分布来解释传输机制。由于结构在x和y方向上对称，因此理论上可以实现对偏振不敏感的EIT。通过反演方法计算结构的有效介电常数，以显示透射光谱。这些结果可应用于许多领域，例如多频带慢光设备，有源传感...