T. Papakyriakopoulos et al., 20-GHz broadly tunable and stable mode-locked semiconductor amplifier fiber ring laser, OPTICS LETT, 24(17), 1999, pp. 1209-1211
We present an actively mode-locked fiber ring laser that uses a single acti
ve semiconductor optical amplifier device to provide both gain and gain mod
ulation from an external optical pulse train. The laser source generated 4.
3-ps pulses at 20 GHz over a 16-nm tuning range and is stable against envir
onmental changes and simple to build. (C) 1999 Optical Society of America.