Optimizing initial chirp for efficient femtosecond wavelength conversion in silicon waveguide by split-step Fourier method. (English) Zbl 1290.78015

The paper deals with the propagation of waves in a silicon waveguide modeled by the tree-wave coupled system of nonlinear Schrödinger equations. The equations are solved numerically by a split-step Fourier method, in view of studying effective wavelength conversion via degenerate four-wave mixing. The emphasis is made on investigating the impact of an initial chirp on the associated spectra. The conversion bandwidth and the conversion efficiency as a function of the signal wavelength are studied.


78A60 Lasers, masers, optical bistability, nonlinear optics
35Q55 NLS equations (nonlinear Schrödinger equations)
78A50 Antennas, waveguides in optics and electromagnetic theory
65M06 Finite difference methods for initial value and initial-boundary value problems involving PDEs
65T50 Numerical methods for discrete and fast Fourier transforms
Full Text: DOI


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