Abstract
The relation between pulse time delay and pulse width via Brillouin slow light is studied. We demonstrate Brillouin slow light for the pulse durations from 1.2 to 15 ns in conventional optical fibers (SMF-28).Our experimental results show that when the depletion of the pump power is not negligible (pump and probe powers are comparable), for narrow pulse (<15 ns) the delay time increases linearly with Brillouin gain, expressed as ΔTd≈α(τ)G , where time-delay coefficient α(τ) is pulse width τ dependent and the delay rate (ns/dB) increases as a function of pulse width, which indicates that the third-order dispersion in the pulse propagation can not be neglected for the wide spectral content of the short pulse (in comparison with the SBS gain bandwidth).
© 2006 IEICE
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