Temporal wave trapping from dynamical pump pulses

Temporal reflection in nonlinear optical fibers provides a powerful framework for manipulating light. In this work, we theoretically and experimentally demonstrate a novel, to the best of our knowledge, mechanism for wave trapping induced by the dynamical evolution of a single high-order soliton pulse. Experimental measurements performed in a 5-km-long nonlinear dispersion-shifted fiber confirm the coexistence of reflected, transmitted, and trapped components, in excellent agreement with theoretical predictions. These results establish a simple and versatile route toward dynamic temporal waveguiding using a single optical pulse, opening new opportunities for all-optical control and manipulation of ultrafast signals.