T. Sylvestre et al., COMBINED SPECTRAL EFFECTS OF PULSE WALK-OFF AND DEGENERATE CROSS-PHASE MODULATION IN BIREFRINGENT FIBERS, Journal of nonlinear optical physics and materials, 6(3), 1997, pp. 313-320
When a single ultrashort light pulse propagates through a birefringent
optical fiber, degenerate cross-phase modulation occurs between the t
wo orthogonal linearly polarized components of the pulse. The combined
effects of pulse walk-off and degenerate-cross-phase modulation are c
haracterized theoretically and experimentally. They cause asymmetry an
d decrease of the induced spectral broadening in comparison with pure
self-phase modulation.