Abstract

A numerical study is presented on the frequency chirp and spectra of light pulses affected by both self-phase modulation and stimulated Raman scattering in optical fibers. The asymmetric distortion of pump and Stokes spectra is attributed to walk-off between the pulses and found to be in good agreement with recent experimental results. The stationary-phase method is employed to explain the relation between the structure of the spectra and the form of the pulse chirp. An analytic expression describing the chirp of a depletable pump and of the first Stokes pulse is given for negligible walk-off. The dominant influence of self-phase modulation over the cross phase modulation on the buildup of the chirp in the case of large walk-off and severe pump depletion is shown.

© 1987 Optical Society of America

Numerical study on combined stimulated Raman scattering and self-phase modulation in optical fibers influenced by walk-off between pump and Stokes pulses

Dieter Schadt, Bozena Jaskorzynska, and Ulf Österberg
J. Opt. Soc. Am. B 3(10) 1257-1262 (1986)

Self-phase modulation and optical pulse compression influenced by stimulated Raman scattering in fibers

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Effects of cross-phase modulation and pump depletion on Stokes pulse dynamics in stimulated Raman scattering

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