Numerical methods for generalized nonlinear Schrödinger equations
- Čiegis, Raimondas
- Amiranashvili, Shalva
- Radziunas, Mindaugas
2010 Mathematics Subject Classification
- 35Q55 65M70 65M06
2008 Physics and Astronomy Classification Scheme
- 02.70.Hm 02.70.Bf 02.60.Jh 42.81.Dp
- Nonlinear Schrödinger Equation, Splitting algorithm, Pseudo-spectral scheme, Finite-difference scheme, Numerical experiments
We present and analyze different splitting algorithms for numerical solution of the both classical and generalized nonlinear Schrödinger equations describing propagation of wave packets with special emphasis on applications to nonlinear fiber-optics. The considered generalizations take into account the higher-order corrections of the linear differential dispersion operator as well as the saturation of nonlinearity and the self-steepening of the field envelope function. For stabilization of the pseudo-spectral splitting schemes for generalized Schrödinger equations a regularization based on the approximation of the derivatives by the low number of Fourier modes is proposed. To illustrate the theoretically predicted performance of these schemes several numerical experiments have been done.
- Kinet. Relat. Models, 8 (2015) pp. 215--234.