A comprehensive analysis of self-focusing in parabolic-index optical fibers is given. As the fundamental nonlinear fiber mode turns out to be stable, higher-order nonlinear modes suffer from a transverse symmetry-breaking (azimuthal) instability at low thresholds
© 2004 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(260.0260) Physical optics : Physical optics
(260.5950) Physical optics : Self-focusing
S. Longhi, D. Janner, and P. Laporta, "Self-focusing and azimuthal instabilities in graded-index optical fibers," in Nonlinear Guided Waves and Their Applications, Technical Digest on CD (Optical Society of America, 2004), paper TuC7.
References are not available for this paper.