Integrability and trajectory confinement in $\mathcal{P}\mathcal{T}$-symmetric waveguide arrays

I V Barashenkov, Frank Smuts, Alexander Chernyavsky

We consider $\mathcal{P}\mathcal{T}$-symmetric ring-like arrays of optical waveguides with purely nonlinear gain and loss. Regardless of the value of the gain-loss coefficient, these systems…