Impact of near-PT symmetry on exciting solitons and interactions based on a complex Ginzburg-Landau model

摘要: We present and theoretically report the influence of a class near-parity-time-(PT-) symmetric potentials with spectral filtering parameter $\alpha_2$ nonlinear gain-loss coefficient $\beta_2$ on solitons in complex Ginzburg-Landau (CGL) equation. The do not admit entirely-real linear spectra any more due to existence coefficients or $\beta_2$. However, we find that most stable exact can exist second quadrant $(\alpha_2, \beta_2)$ space, including corresponding axes. More intriguingly, centrosymmetric two points space possess imaginary-axis (longitudinal-axis) linear-stability spectra. Furthermore, an unstable mode be excited another by adiabatic change Other fascinating properties associated are also examined detail, such as interactions energy flux. These results useful for related experimental designs applications.