High Peak Power, Narrow RF linewidth Asymmetrical Cladding Quantum Dash Mode- Locked Lasers

In this letter we report the development of asymmetrical cladding single section InAs/InP quantum dash mode-locked laser. The asymmetrical cladding structure allows to decrease the internal losses and to increase the optical eigenmode mode size. We have measured continuous wave power superior to 400 mW and RF linewidth as narrow as 550 Hz for passive mode-locking. We have compressed the optical signal using the dispersion of SMF fiber and we have measured the delay between groups of optical modes for different SMF length. With the appropriate SMF length we have obtained a quasi-null delay. In this configuration, subpicosecond pulses with 18 W peak power have been demonstrated for 10 GHz MLL. These performances demonstrate the potential of InAs/InP MLL for frequency comb generation up to THz domain and high peak power optical pulses generation.