title: Nonlinear asymmetric pulse distortion in long optical fibers.
abstract: Short pulses propagating in long optical fibers are shown to be asymmetrically distorted as a result of a nonlinear effect that is not included in the conventional nonlinear Schrödinger equation describing nonlinear pulse propagation. This effect may be responsible for pulse asymmetries observed in recent experiments.
authors.forename: D
authors.initials: D
authors.lastname: Anderson
authors.forename: M
authors.initials: M
authors.lastname: Lisak