Novel Method for the Measurement of Chromatic Dispersion of Photonic Crystal Fibers

A novel method for the measurement of chromatic dispersion (CD) profiles of photonic crystal fibers (PCFs) by using a tip interferometer is presented. A PCF tip interferometer is formed by splicing a short section of the PCF to a single mode fiber. The CD coefficient of the PCF is measured from 1525 to 1565 nm by using the white-light interferometry. The result of the proposed method agrees with that of the conventional swept wavelength interferometry. The maximum variation is only 0.084 ps/nm·km at the wavelength of 1537.672 nm.