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 2. Forward reflection (red solid line), backward reflection (blue dash–dot–dot line) and transmission (black dotted line) spectra as the functions of wavelength. The related parameters are η1 = η2 = η = 0.2 × 1013 rad s−1, Γ1 = Γ2 = 1.45η, and g = 2.98 × 1013 rad s−1.