Electrically PumpedInGaAsP/InPMicroring Optical Amplifiers andLasers withSurface Passivation

InGaAsP/InP microring lasers andoptical amplifiers providing gainat1550nm are demonstrated. Themicrorings provide about 10dBofgaininpulsed mode.Sulfur passivation is used toreduce carrier loss tosurface recombination. ©2005 Optical Society ofAmerica OCIScodes: (250.5980) Semiconductor optical amplifiers, (250.5300) Photonic integrated circuits