Nonlinear pulse propagation in the neighborhood of the zero-dispersion wavelength of monomode optical fibers

Nonlinear pulse propagation is investigated in the neighborhood of the zero-dispersion wavelength in monomode fibers. When the amplitude is sufficiently large to generate breathers (N > 1 solitons), it is found that the pulses break apart if λ - λ0is sufficiently small, owing to the third-order dispersion. Here λ0denotes the zero-dispersion wavelength. By contrast, the solitary-wave (N = 1) solution appears well behaved for arbitrary λ - λ0. Implications for communication systems and pulse compression are discussed.