title: Coupled-mode theory approach to nonlinear pulse propagation in optical fibers.
abstract: The formalism of coupled-mode theory is adopted for describing nonlinear pulse propagation in optical fibers, the coupling being induced by the nonlinear part of the refractive index. This approach describes in a natural way the influence of the waveguide, and in principle allows of the possibility of investigating soliton propagation when more than one mode is excited.
authors.forename: B
authors.initials: B
authors.lastname: Crosignani
authors.forename: C H
authors.initials: CH
authors.lastname: Papas
authors.forename: P D
authors.initials: PD
authors.lastname: Porto