Low noise subpicosecond pulse generation from a 22 GHz AlInGaAs multiple quantum well laser by direct RF modulation

Here we present 860 fs pulses from a monolithic AlInGaAs multiple quantum well two-section MLL fabricated by employing a very simple self-aligned wet etching technique. By using Benzocyclobutene (BCB) as the isolation layer and minimizing the metal pad size, we are able to modulate the SA at 22 GHz and synchronize the laser to an external source. By doing so we achieve very effective FHML (280 fs timing jitter) which shows distinct advantages over other methods.