Amplitude noise of 40-GHz pulses from a subharmonically synchronous mode-locked semiconductor laser

The broad-band amplitude noise of 40-GHz pulses from a subharmonically synchronous mode-locked (SSML) semiconductor laser is investigated. Experiments show that the amplitude noise of pulses generated from a SSML laser depends on the amplitude noise and pulsewidth of injected pulses, frequency detuning and subharmonic numbers.