A plasmonic waveguide end-coupled to two plasmonic cavities in a non-Hermitian quantum system for dual-band unidirectional reflectionlessness |
Hang Yang,Fei Zhao,Ling-Xue Yu,De-Xiu Qiu,Cheng-Shou An,Ying-Qiao Zhang,Xing-Ri Jin |
Figure 4. The forward (a) and backward reflection (b) spectra as the functions of wavelength and coupling strength g between two PCs, respectively. The related parameters are η1 = η2 = η = 0.2 × 1013 rad s−1, Γ1 = Γ2 = 1.45η, and g is variable. |