Based on the nonlinear Schroedinger equation describing pulse propagation in photonic crystal fibers(PCF),we investigate the effect of pulse chirp on supercontinuum generation in the case of anomalous dispersion by numerical simulation and discuss the way to controlling supercontinuum generation by using pulse chirp.It is shown that both the positively and negatively chirped pulses slow down the spectral broadening comparing with the chirp-free pulse,especially in the case of the negative chirp.This phenome...
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