All-optical transistor operation based on the bistability principle in nonlinear distributed feedback GaInAsP-InP waveguide: a transient perspective

We demonstrated all-optical transistor operation based on the bistability principle in nonlinear distributed feedback GaInAsP-InP waveguide. By increasing the pump power above a certain limit, the probe transmission that operates in the bistable regime can turn from switching to transistor mode. The unstable state is shown to play a crucial role in distinguishing the probe transmission artifacts between switching and transistor mode.