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Spatio-Temporal Self-Focusing in Femtosecond Pulse Transmission Through Multimode Optical Fibers

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3 Author(s)
Hesketh, G. D. ; Optoelectronics Research Centre, University of Southampton, Southampton, Hampshire, United Kingdom ; Poletti, F. ; Horak, P.

We numerically investigate ultra-short pulse propagation in multimode optical fibers with launch peak powers approaching the critical power for self-focusing using a generalized multimode nonlinear Schrödinger equation approach. Nonlinear spatial and temporal effects combined with fiber dispersion govern pulse compression in space and time which can result in damage-inducing intensity levels. Here we identify pulse parameters for which damage is avoided and high-power delivery through optical fiber is possible near the fiber zero-dispersion wavelength.

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Lightwave Technology, Journal of  (Volume:30 ,  Issue: 17 )