COHERENT STRUCTURES IN WEAKLY BIREFRINGENT NONLINEAR-OPTICAL FIBERS

This article studies two coupled nonlinear Schrodinger equations that govern the pulse propagation in weakly birefringent nonlinear optical fibers. The coherent structures for these equations, such as vector so litons and localized oscillating solutions, are studied analytically a nd numerically. Three types of localized oscillating structures are id entified and their functional forms determined by perturbation methods . In some of these structures, infinite oscillating tails are present. The implications of these tails are also discussed.