40 GHz AlGaInAs/InP 1.55 μm passively mode-locked laser with low divergence angle and timing jitter

A novel 40 GHz passively mode-locked AlGaInAs/InP 1.55 μm laser was demonstrated with low divergence angle (12.7° × 26.3°), timing jitter of 440 fs (100 Hz–100 MHz), and RF linewidth of 25 kHz.