Wavelength tuning of GaInAsP/InP integrated laser with butt-jointed built-in distributed Bragg reflector

Abstract

Fine tuning of lasing wavelength was achieved with a butt-jointed built-in DBR laser integrated with an additional tuning waveguide. The plasma effect of the injected carrier was utilised. The wavelength shift of 4.0 Å was demonstrated by an injected tuning current of 4.1 mA.