Nonlinear modal propagation analysis method in multimode interference coupler for operation development

All-Optical Signal Processing by Nonlinear Multimode Interference in Ta2O5 Waveguides

“…In the theoretical framework, nonlinear MMI have been intensively studied for their spectral and spatial properties; , however, in the experimental framework, nonlinear MMI have been described in mode-locking fiber lasers, which were possible due to the improved interaction length in a laser cavity and the precisely tuned refractive index sensors due to the nonlinear Kerr effect . All-optical power-dependent switching had never been experimentally demonstrated prior to this work.…”