Abstract
Total dispersion in single mode parabolic-index fibers is computed from the exact numerical solution of the scalar wave equation in the presence and absence of ripples in refractive index profile. Tables displaying the variation of the zero dispersion wavelengths and optimum core radii with ripple amplitude and spatial frequency are given. It is observed that for larger values of ripple amplitude, the zero dispersion wavelength and optimum core radius increase. However we find that if the ripple amplitude is up to 5% of the core-cladding refractive index difference (this is the value reported in practical fibers) the effect on zero dispersion wavelength and core radius is very small (about 2–3%).
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