Chromatic dispersion measurement from Fourier transform of white-light interference patterns

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Abstract
Single-mode fibres were inserted in one arm of a classical Mach-Zehnder interferometer, illuminated with a light source having a broad spectral width. A simple numerical Fourier transform method, applied to a single interferogram, leads to the variations in neff(λ) over a broad λ-range. The chromatic dispersion is then derived via numerical differentiation.