Experimental comparison of the bandwidths of standard and dispersion-shifted fibers near their 'zero-dispersion' wavelengths

We have used an interferometric technique to measure first- and second-order dispersion of a particular type of dispersion-shifted fiber. The values of beta and beta near the dispersion minimum are substantially the same as those of a conventional fiber except for being shifted from the 1.3-microm to the 1.5-microm wavelength range. We discuss the implications of this observation on the bandwidth of dispersion-shifted fibers.