Improved Slope Efficiency of InAs/InP Quantum Dash Mode-Locked Lasers

This paper presents the performance of InAs/InP quantum dash (QDash) mode-locked lasers with different number of QDash layers. Decreasing the number of QDash layers leads to a markedly reduced threshold and improved slope efficiency. This provides insight toward the application of QDash mode-locked laser to the field of optical transmission for all-optical networks.