T. Papakyriakopoulos et al., Optical clock repetition-rate multiplier for high-speed digital optical logic circuits, OPTICS LETT, 24(11), 1999, pp. 717-719
Repetition-rate multiplication has been shown by use of a fiber ring oscill
ator with a semiconductor optical amplifier as the gain medium and by use o
f fast saturation and recovery of the amplifier from an external optical pu
lse train. Repetition-frequency multiplication up to 6 times and up to 34.6
8-GHz frequency have been achieved. (C) 1999 Optical Society of America.