Laterally gain-coupled 1.57 mu m DFB lasers with chromium surface grating and self-aligned Ti/Pt/Au ohmic contact
30 March 2000
A simple method for fabricating gain coupled DFB lasers with lateral surface chromium Bragg gratings and self-aligned low capacitance ohmic contacts is reported. These InGaAsp/InP lasers show monomode emission with a sidemode suppression ratio of 40dB. For 243 mu m long devices a continuous wave threshold current of 17mA was measured at room temperature.