## 3 Results and Discussions  
Figure 2 presents the simulated transmission spectra of the RTM device obtained by moving the SRR-2 and SRR-4 meta-atoms along the positive \(x\)-axis direction in TE and TM modes. The values of \(y_{2}\) and \(y_{4}\) are kept at the initial positions. It has two resonances at 0.49 THz and 0.92 THz for the initial state (\(x_{2}\), \(x_{4}\)) = (16, 16) in TE mode, which is shown as the black curve in Figure 2a. By moving the position of (\(x_{2}\), \(x_{4}\)) from (16, 16) to (32, 32) along the positive \(x\)-axis direction in TE mode, the first resonance is blue-shifted from 0.49 THz to 0.54 THz. The tuning range is 50 GHz. The second resonance is blue-shifted from 0.92 THz to 0.96 THz with a tuning range of 40 GHz. In TM mode, there are three initial resonances at 0.50 THz, 0.67 THz and 0.91 THz as shown by the black curve in Figure 2b. The first resonance is slightly red-shifted from 0.50 THz to 0.48 THz, the second resonance is red-shifted from 0.67 THz to 0.65 THz, and the third resonance is red-shifted from 0.91 THz to 0.89 THz. These results indicate that the reconfigured SRR meta-atoms have minor THz tunability in TE and TM modes. In order to investigate the influence of moving the SRR-1 and SRR-2 meta-atoms, the values of \(x_{1}\) and \(x_{2}\) are kept at the initial positions while \(y_{1}\) and \(y_{2}\) are changed. The simulated transmission spectra are obtained by moving the SRR-1 and SRR-2 meta-atoms along positive \(y\)-axis direction in TE and TM modes as shown in Figure 3a,b, respectively. In TE mode, there are two initial resonances at 0.49 THz and 0.92 THz. When (\(y_{1}\), \(y_{2}\)) moves to (32, 32), the resonances are almost identical. It is because the TE-field coupling effect within the inner SRR meta-atoms has no change along \(x\)-axis direction. In TM mode, there are three resonances at 0.50 THz, 0.67 THz and 0.91 THz for the initial state of (\(y_{1}\), \(y_{2}\)) = (16, 16). By moving the (\(y_{1}\), \(y_{2}\)) position to above (20, 20), the first and third resonances vanish gradually, and the second resonance shifts to 0.72 THz for (\(y_{1}\), \(y_{2}\)) = (32, 32). These properties are suitable for the metamaterial to be used in the tunable polarized multiresonance application. Figure 2: Simulated transmission spectra of the RTM device obtained by moving the SRR-2 and SRR-4 meta-atoms along the positive \(x\)-axis direction in (**a**) transverse electric (TE) and (**b**) transverse magnetic (TM) modes. Figure 4 shows the simulated transmission spectra of the RTM device obtained by moving the SRR-2 and SRR-4 meta-atoms along the positive \(y\)-axis direction in TE and TM modes. The \(x_{2}\) and \(x_{4}\) values are set to the initial positions, i.e., (16, 16). The \(y_{2}\) and \(y_{4}\) values are moved from \(16\)\(\upmu\)m to \(32\)\(\upmu\)m and from \(-16\)\(\upmu\)m to \(0\)\(\upmu\)m, respectively. When the SRR-2 and SRR-4 meta-atoms are moved from the position (\(16,-16\)) to (\(20,-12\)), a sharp resonant peak at the first resonance appears, which is the bright-mode resonance in the EIT analog owing to the stronger electromagnetic coupling energy between the asymmetrical SRRs. In TE mode, there are two resonant modes of the RTM device, which are broadband resonance generated by the localized surface plasmons within SRR meta-atoms and the narrowband resonance produced by the surface diffraction wave from the periodic SRR array. When they are tuned to superimpose, these two resonances will couple together and then generate a Fano-resonance. Therefore, the RTM device exhibits the EIT analog characteristic. In order to understand the interactions between the THz wave and the SRR array, an electromagnetic field monitor is set in the SRR array. The corresponding electromagnetic field distributions are shown in Figure 5 to illustrate the electric field (E-field) and magnetic field (H-field), respectively. When the position of (\(y_{2}\), \(y_{4}\)) changes continuously, the resonance is slightly blue-shifted with a tuning range of \(20\) GHz.