Mode-Locked Lasers with “Thin” Quantum Wells in 1.55 μm Spectral Range

We present the results of an experimental study of two-section semiconductor lasers with active region consisting of three 3.1 nm InGaAs/InGaAlAs quantum wells. Passive mode-locking regime with a repetition rate of 10 GHz is realized. Different approaches have been compared to determine the stability of pulse repetition.