title: Inverse scattering transform for the derivative nonlinear Schrödinger equation with nonvanishing boundary conditions.
abstract: An inverse scattering transform for the derivative nonlinear Schrödinger equation with nonvanishing boundary conditions is derived by introducing an affine parameter to avoid constructing Riemann sheets. A one-soliton solution simpler than that in the literature is obtained, which is a breather and degenerates to a bright or dark soliton as the discrete eigenvalue becomes purely imaginary. The solution is mapped to that of the modified nonlinear Schrödinger equation by a gaugelike transformation, predicting some sub-picosecond solitons in optical fibers.
authors.affiliation: Department of Physics, Jinan University, Guangzhou 510632, People's Republic of China. xiangjun-chen@21cn.com
authors.forename: Xiang-Jun
authors.initials: XJ
authors.lastname: Chen
authors.forename: Wa Kun
authors.initials: WK
authors.lastname: Lam