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Measurement of the nonlinear coefficient of optical fibers by femtosecond pulses and spectral interferometry
Journal article

Measurement of the nonlinear coefficient of optical fibers by femtosecond pulses and spectral interferometry

C. Liberale, L. Tartara, I. Cristiani, M. Cartasegna and V. Degiorgio
IEEE photonics technology letters, Vol.15(8), pp.1123-1125
01/08/2003
DOI: https://doi.org/10.1109/LPT.2003.815359

Abstract

Fiber nonlinear optics Optical fibers Optical interferometry Optical modulation Optical propagation Optical pulses Performance evaluation Phase shifting interferometry Pulse measurements Ultrafast optics
Accurate measurements of the nonlinear coefficient /spl gamma/ of optical-communication fibers are performed by using 110-fs pulses. The nonlinear phase shift induced by self-phase modulation over a propagation length shorter than 1 m is detected by the spectral-interferometry technique. The value of /spl gamma/ is obtained by comparing the measured frequency-dependent nonlinear phase with the numerical solution of the nonlinear propagation equation.

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