Step-by-Step Method for Solving Coupled Nonlinear Schrödinger Equations

Implementation of coupled nonlinear Schrödinger equations using the split-step method, primarily designed for digital simulation of high-power mode-locked gain fiber lasers. The simulation process consists of four key steps: fiber loss transmission, dispersion, nonlinear effects, and gain. Program organization includes 'finding' as the main driver function with supporting sub-functions for each physical process.