High-power, widely-tunable sampled grating DBR laser integrated with a semiconductor optical amplifier

We have demonstrated a high-power widely tunable SG-DBR semiconductor laser monolithically integrated with a SOA. Chip power in excess of 55 mW and SMSR > 40 dB across a 40 nm tuning range have been achieved. Over 13 dBm fiber-coupled power was demonstrated across 85 50-GHz ITU L-band channels.