Papers by Keyword: Nonlinear Schrödinger Equation

Abstract: This paper uses the split-step Fourier transform method to solve the higher-order nonlinear Schrödinger equation for the transmission of the soliton pulse in the optical fiber, studies the evolution laws of the generation and transmission of the short pulse by changing intracavity dispersion distribution and validates the mode locking and transmission characteristics of the pulse under dispersion management.

Abstract: We established a deep-sea internal wave detection model based on the nonlinear Schrödinger (NLS) equation and Synthetic Aperture Radar (SAR) images, and applied the model to the Malin Shelf edge, located at UK Continental Shelf, west of Scotland, to retrieve internal wave parameters. We selected the SAR images of internal waves at Malin Shelf edge, combined NLS equation with the action spectrum balance equation and Bragg scattering model, retrieved the amplitudes and phase velocities of the internal waves at Malin Shelf edge, and compared these data with those retrieved by the model based on KdV equation and those observed at the same period. The results show that the error between the data retrieved by our model and the measured data is very small, while the difference between the data retrieved by the detection model based on KdV equation and the measured data is significant. In addition, the phase velocities, calculated in our model and the model based on KdV equation, are both close to the measured data. Consequently, our model is valid and more accurate for the parameter inversion of internal waves in deep-sea area.