Physical Sciences and Mathematics Commons^™

Broadband Sbs Slow Light In An Optical Fiber, Zhaoming Zhu, Andrew M.C. Dawes, Daniel J. Gauthier, Lin Zhang, Alan E. Willner

Andrew M C Dawes

In this paper, we investigate slow light via stimulated Brillouin scattering (SBS) in a room temperature optical fiber that is pumped by a spectrally broadened laser. Broadening the spectrum of the pump field increases the linewidth Δωp of the Stokes amplifying resonance, thereby increasing the slow-light bandwidth. One physical bandwidth limitation occurs when the linewidth becomes several times larger than the Brillouin frequency shift ΩB so that the anti-Stokes absorbing resonance substantially cancels out the Stokes amplifying resonance and, hence, the slow-light effect. We find that partial overlap of the Stokes and anti-Stokes resonances can actually lead to an enhancement …