Periodically conjugated solitons in dispersion-managed optical fiber

We present an analysis of long-distance propagation for short optical solit ons in a nonlinear optical fiber incorporating the effects of periodic phas e conjugation and dispersion management. The analysis includes the Raman se lf-frequency shift, third-order dispersion, and nonlinear dispersion. The p eriodic conjugation compensates for the group velocity dispersion, self-pha se modulation and Raman self-frequency shift; we show that stable pulse pro pagation results from the the balance of the (negative) third-order dispers ion and the nonlinear dispersion. Judicious choice of the dispersion map ne gates perturbations due to linear loss; the analysis predicts parameters fo r the dispersion map that minimize pulse distortion. (C) 2000 Elsevier Scie nce B.V. All rights reserved.