Nguyen V.H., Tai L.X.T., Bugar I., Longobucco M., Buczynski R., Malomed B.A., Trippenbach M.
We experimentally investigate a nonlinear switching mechanism in a dual-core highly nonlinear optical fiber. We focus the input stream of femtosecond pulses on one core only, to identify transitions between inter-core oscillations, self-trapping in the cross core, and self-trapping of the pulse in the straight core. A model based on the system of coupled nonlinear Schrödinger equations provides surprisingly good agreement with the experimental findings.
Optics Letters, 2020, vol. 45(18), pp. 5221-5224, doi: 10.1364/OL.404039