Chromatic dispersion characteristics of fibers with optical Kerr-effect nonlinearity

Chromatic dispersions of optical fibers with Kerr-effect nonlinearity are investigated. Under high optical intensity, dispersion characteristics become different from those of the linear state (or weak optical intensity) since the refractive index profile changes in accordance with the intensity profile. Nonlinear dispersion characteristics are calculated for step-index and quadratic profile fibers with core-cladding, core, and cladding nonlinearity. It is shown that although the propagation constant of the step-index fiber increases substantially from the linear value, the group delay and waveguide dispersion do not increase as much