title: Dark-soliton generation in optical fibers.
abstract: We study the generation of dark-pulse solitons in nonlinear-optical fibers in the normal dispersion regime. We demonstrate that dark solitons may be created as pairs by an arbitrary dark pulse without a threshold and obtain the parameters of the generated solitons. The cases of soliton creation by a boxlike dark pulse and a random Gaussian pulse are also described.
authors.forename: S A
authors.initials: SA
authors.lastname: Gredeskul
authors.forename: Y S
authors.initials: YS
authors.lastname: Kivshar