Ultra High Repetition Rate Optical Pulse Generation by Continuous Light Injection into a Continuous Wave Operated Distributed Feedback Laser

We present a new method to generate short optical pulses with repetition rates from 20 to beyond 100 GHz based on the injection technique. No electrical modulation current is required. The light injection from one continuous wave (CW) operated multi quantum well (MQW)-DFB-laser into another generates stable sinusoidal laser pulses. Transmission of the pulses over a dispersion shifted fibre (DSF) generates solitons with the desired pulse width and a time bandwidth product of 0.315.