# Solitons in a PT-symmetric χ(2) coupler.

@article{gren2017SolitonsIA, title={Solitons in a PT-symmetric $\chi$(2) coupler.}, author={M. {\"O}gren and Fatkhulla Kh. Abdullaev and Vladimir V. Konotop}, journal={Optics letters}, year={2017}, volume={42 20}, pages={ 4079-4082 } }

We consider the existence and stability of solitons in a χ(2) coupler. Both the fundamental and second harmonics (SHs) undergo gain in one of the coupler cores and are absorbed in the other one. The gain and loss are balanced, creating a parity-time (PT) symmetric configuration. We present two types of families of PT-symmetric solitons having equal and different profiles of the fundamental and SHs. It is shown that the gain and loss can stabilize solitons. The interaction of stable solitons is…

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