Simple Method for Measuring the Zero-Dispersion Wavelength in Optical Fibers

We propose a very simple method for measuring the zero-dispersion wavelength of an optical fiber as well as the ratio between the third- and fourth-order dispersion terms. The method is based on the four-wave mixing process when pumping the fiber in the normal dispersion region, and only requires the measurement of two spectra. We provide an experimental demonstration of the method in a photonic crystal fiber and we show that the measured zero-dispersion wavelength is in good agreement with a low-coherence interferometry measurement.