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Measurement of the nonlinear refractive index of long dispersion-shifted fibers by self-phase modulation at 1.55 μm

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4 Author(s)
R. H. Stolen ; AT&T Labs. Res., Red Bank, NJ, USA ; W. A. Reed ; K. S. Kim ; G. T. Harvey

We measure a value of N2=2.45×10-16 cm 2/W (±5%) by self-phase modulation (SPM) in two 20 km dispersion-shifted fibers for random polarization at 1.55 μm. There is still some dispersive broadening and we find that an accurate determination of N2 requires fitting the experimental (SPM) spectra with a computer simulation to account for the variation in pulse shape and fiber properties along the length of the fiber. We also show that spectral information provides information about the input pulse properties

Published in:

Journal of Lightwave Technology  (Volume:16 ,  Issue: 6 )