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