Optical solitons in $\mathcal{P}\mathcal{T}$-symmetric nonlinear couplers with gain and loss

N. V. Alexeeva, I. V. Barashenkov, Andrey A. Sukhorukov +1

We study spatial and temporal solitons in the $\mathcal{P}\mathcal{T}$ symmetric coupler with gain in one waveguide and loss in the other. Stability properties of the high- and low-frequency…