Past Seminars Seminários Já Decorridos 2009

Ultra short optical solitons, dispersive waves and supercontinuum generation in photonic crystal fibers

By: Alexey Yulin
From: CFTC
At: Complexo Interdisciplinar, Anfiteatro
[2009-12-02] 12:00

A powerful laser pulse propagating inside an optical waveguide and having significant part of its spectrum within the region of anomalous group velocity dispersion usually breaks up into a mixture of intense localized pulses (solitons) and quasi-linear dispersive waves. This is a fertile ground for understanding of the fundamental interactions between optical solitons and dispersive waves. We develop a theory of the generation of new spectral components by scattering of the dispersive waves on optical solitons. We derive the wave number matching conditions and present an analytical method of finding the amplitudes of the generated waves. We discuss the depletion of the CW pump, spectral recoil of the soliton and related issues. The theoretical predictions are compared to the results of numerical simulations and real experiments on supercontinuum generation in photonic crystal fibers.