The dispersion properties of photonic crystal fibers are calculated by
expression of the modal field as a sum of localized orthogonal functi
ons. Even simple designs of these fibers can yield zero dispersion at
wavelengths shorter than 1.27 mu m when the fibers are single mode, or
a large normal dispersion that is suitable for dispersion compensatio
n at 1.55 mu m. (C) 1998 Optical Society of America.