Technique for measuring the distributed zero dispersion wavelength of optical fibres using pulse amplification caused by modulation instability

A novel method for measuring the distributed zero dispersion wavelength λ₀ along a fibre´s length is proposed that uses the dispersion dependent amplification induced by modulation instability. The λ₀ distribution of a 10 km fibre is successfully measured without cutting the fibre into short pieces. The measured distribution is compared with the average values of each span as measured with the conventional method