Four-wave mixing process
Parametric amplification in optical fibers - Fundamentals and applications
Article REF: RE167 V1
Four-wave mixing process
Parametric amplification in optical fibers - Fundamentals and applications

Authors : Arnaud MUSSOT, Alexandre KUDLINSKI

Publication date: February 10, 2013 | Lire en français

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2. Four-wave mixing process

2.1 Reminder of the basic physical processes involved

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2.1.1 Group speed chromatic dispersion

Optical fibers are generally made mainly of silica glass, which is a dispersive material, meaning that its refractive index depends on wavelength. As a result, each spectral component of a pulse travels at a different group velocity from the others: this is chromatic group velocity dispersion. This phenomenon is characterized by a change in the temporal profile of the pulse as it leaves the propagation medium

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