4 resultados para Broadband Communication
em DI-fusion - The institutional repository of Université Libre de Bruxelles
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info:eu-repo/semantics/published
Resumo:
The propagation of a broadband pulse through a dense resonant medium with a narrow transparency window is considered. We show that the pulse splits into a slowly propagating adiabatic part and a fast nonadiabatic part. © 2005 Optical Society of America.
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The compression properties of octave-spanning supercontinuum spectra generated in photonic crystal fibers are studied using stochastic nonlinear Schrödinger equation simulations. The conditions under which sub-5 fs pulses can be obtained after compression are identified. © 2004 Optical Society of America.
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Numerical simulations are used to study the temporal and spectral characteristics of broadband supercontinua generated in photonic crystal fiber. In particular, the simulations are used to follow the evolution with propagation distance of the temporal intensity, the spectrum, and the cross-correlation frequency resolved optical gating (XFROG) trace. The simulations allow several important physical processes responsible for supercontinuum generation to be identified and, moreover, illustrate how the XFROG trace provides an intuitive means of interpreting correlated temporal and spectral features of the supercontinuum. Good qualitative agreement with preliminary XFROG measurements is observed. © 2002 Optical Society of America.