POLARIZATION INTERACTIONS IN BIREFRINGENT FIBER WAVE-GUIDES WITH ANISOTROPIC KERR NONLINEARITY

The influence of the antisymmetric components of the fourth-rank nonlinear susceptibility tensor is taken into account in considering the polarisation self-interaction of waves in birefringent fibre waveguides. The effects discussed include the appearance of an instability of a linearly polarised mode with a lower propagation velocity, formation of a nonlinear mode with elliptic polarisation, and self-rotation of the plane of polarisation of linearly polarised light.