Optical pulse generation with high repetition rate by sinusoidally-driven InGaAs/InAlAs multiquantum well modulator

A 20 GHz optical pulse train was generated by a sinusoidally-driven InGaAs/InAlAs multiquantum well intensity modulatoroperating at low voltages (from -2 to -3 V DC biaswith a 3.2 V peak-to-peak RF signal). An approximately transform-limited optical pulse train width of 8 ps and a spectral widthof 40 GHz were obtained. >