Optically induced waveguiding in semiconductor optical amplifiers

Summary form only given.Soliton waveguiding effects have been investigated in an active double heterostructure diode structure employed as a nonlinear medium. It was observed that the nonlinearities due to reverse band filling in active semiconductor amplifiers give rise to a spectral region where self-focusing takes place for photon energies very slightly below the energy corresponding to the peak of the gain. The sample consisted of a standard double heterojunction GaAs-AlGaAs laser diode structure.