Numerically reversing the nonlinear wave propagation in single-mode optical fiber

We have demonstrated the inverse operation of nonlinear light wave propagation in a single-mode optical fiber by using the inverse split-step Fourier method. Most effects are reversible, with some numerical distortion depending on system parameters. The idea of performing an inverse operation to wave propagation in a single-mode fiber unveiled a new aspect of studying nonlinear effects in a single-mode fiber and may provide new approaches to tackle some nonlinear problems in optical fiber communications.