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Phys Rev Lett. 2001 Nov 12;87(20):203901. Epub 2001 Oct 24.

Supercontinuum generation of higher-order solitons by fission in photonic crystal fibers.

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Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Strasse 2a, D-12489 Berlin, Germany.


The nonlinear pulse propagation in photonic crystal fibers without slowly varying envelope approximation is studied using an improved variant of first-order wave equation. Supercontinuum generation is shown to be caused by a novel mechanism of spectral broadening through fission of higher-order solitons into redshifted fundamental solitons and blueshifted nonsolitonic radiation. Good agreement with experimental observations is found, and subcycle pulse compression is studied.

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