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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 12, Iss. 7 — Jul. 1, 1995
  • pp: 1279–1286

Pulse generation in birefringent optical fibers by four-wave mixing and Raman scattering

R. Schulz and H. Harde  »View Author Affiliations


JOSA B, Vol. 12, Issue 7, pp. 1279-1286 (1995)
http://dx.doi.org/10.1364/JOSAB.12.001279


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Abstract

Pulse generation in birefringent fibers by four-wave mixing in the presence of Raman scattering is theoretically modeled by a set of coupled nonlinear Schrödinger equations that are solved numerically. We discuss phase matching in the positive group-velocity dispersion regime for the split-pump configuration, which places the parametric frequency shift within the Raman band, and derive the combined initial gain. It is found that for shorter fiber lengths the symmetry-breaking roles of Raman–Stokes gain and Raman–anti-Stokes loss is balanced by four-wave mixing, resulting in a common effective power gain for both components. The importance of the relative phase of the four participating pulses as a switching parameter for the direction of the energy flow is demonstrated. It is further shown that, as a result of pulse walk-off, Raman scattering becomes the dominant process for longer fiber lengths. Theoretical results are compared with experimental cross-correlation pulse shapes.

© 1995 Optical Society of America

Citation
R. Schulz and H. Harde, "Pulse generation in birefringent optical fibers by four-wave mixing and Raman scattering," J. Opt. Soc. Am. B 12, 1279-1286 (1995)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-12-7-1279

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