Abstract
Independent delay control of multi-channel signals based on stimulated
Brillouin scattering slow light is proposed and demonstrated for the first
time by using a multiple longitudinal mode fiber laser. Two independent
broadband Brillouin pumps are generated by a fiber ring laser, which use a
semiconductor optical amplifier as gain medium. The spectrum of each pump is
comprised of a large number of longitudinal lasing modes, separated by 7 MHz
and spanning a bandwidth of 11.6 and 11.2GHz,
respectively. The multi-channel broadband Brillouin slow light is
demonstrated by using 8 Gb/s data signals. The signals in both channels are
continuously delayed by as much as 80 ps at 21dBm pump
power, and the maximal delay-time with error free operation (bit error rate
$< 10<sup>-9</sup>) are up to 56.4 and 56 ps at 19dBm
pump power.
© 2011 IEEE
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