title: Exact radial dependence of the field in a nonlinear dispersive dielectric fiber: bright pulse solutions.
abstract: The propagation of nonlinear optical pulses in fibers is discussed, taking into account physical effects arising from nonlinearity, dispersion, and transverse confinement. The wave equation is solved by treating the radial dependence of the field in an exact way. The conditions supporting bright solitary waves are presented and compared with previous results.
authors.forename: D N
authors.initials: DN
authors.lastname: Christodoulides
authors.forename: R L
authors.initials: RL
authors.lastname: Joseph