High speed 1.3 /spl mu/m AlGaInAs DFB-LD with /spl lambda//4-shift grating

1.3 /spl mu/m AlGaInAs DFB-LD with /spl lambda//4-shift grating has been developed for the first time. The light output power over 5 mW at 85/spl deg/C has been obtained for the DFB-LD. Relaxation oscillation frequency (fr) as high as 11.2 GHz@5 mW at a negative detuning of -10 nm has been attained. Clearly opened eye diagram at 10 Gbps modulation has been also confirmed at 75/spl deg/C, which demonstrate excellent transmission characteristics. Stable operation over 1700 hours at 10 mW@85/spl deg/C in the preliminary life test has been confirmed.