Optical short pulse generating device

An optical pulse generating device, comprising:

• a continuously oscillating semiconductor laser;
• a first semiconductor electroabsorption optical modulator for performing intensity modulation of the output light of said semiconductor laser;
• a second electroabsorption optical modulator for performing intensity modulation of the output light from said first electroabsorption optical modulator;
• a sinusoidal voltage generator for generating a sinusoidal voltage for driving said first and second electroabsorption optical modulators;
• a DC voltage generator for applying a DC bias voltage to said first and second electroabsorption optical modulators;
• and
• a delay circuit inserted between said second electroabsorption optical modulator and said sinusoidal voltage generator for delaying said sinusoidal voltage from said sinusoidal voltage generator for a period of time corresponding to its phase reversal.