Long All-Active Monolithic Mode-Locked Lasers With Surface-Etched Bragg Gratings

We have fabricated 4.4-mm-long monolithic InAlGaAsP-InP mode-locked lasers with integrated deeply surface etched distributed Bragg reflector (DBR) mirrors. The lasers produce 3.7-ps transform-limited Gaussian pulses with 10-mW average output power and 250-fs absolute timing jitter. The performance of the DBR lasers is compared to the performance of Fabry-Perot mode-locked lasers from the same wafer and to the performance of earlier reported long monolithic DBR mode-locked lasers and is found to be better.