Demonstration of all-optical switching in a GaInAsP distributed feedback waveguide

All-optical threshold operation and set-reset operation are successfully demonstrated in a GaInAsP waveguide with a Bragg reflector. In order to integrate the bistable device with other optical functional devices, it is the most promising way to use distributed Bragg reflectors for optical feedback. An intensity-dependent Bragg condition derives all-optical switching in a Bragg reflector-loaded waveguide having an intensity-dependent refractive index.