Experiments are presented showing that under dual-frequency, orthogonal-polarization
pumping, stimulated Raman scattering in optical birefringent fibers can be
suppressed in one of the two fiber axes. For relatively small-frequency spacing
and group-velocity mismatch between the pumps, Stokes light is suppressed
along the polarization direction of the highest-frequency pump, owing to the
orthogonal component of the Raman gain.
© 1997 Optical Society of America
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