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Saturation spectrale de gain dans les amplificateurs à fibres dopées erbium : largeurs homogène et inhomogène et approche des nanomatériaux

Abstract : The exponential growth of the optics telecommunication lines is due, amongst other things, to two technologies: Erbium Doped Fibre Amplifier (EDFA) and wavelength division multiplexing (WDM). However, when used together these technologies are impacted by what is called Gain Spectral Hole Burning (GSHB), one hole is burning in the gain bandwidth while a strong signal is propagating inside the amplifier fibre.
This work examines this problem in order to link it up with known magnitudes and phenomena. Spectrometry experiments had to be done directly on optical fibre so as to make comparison between magnitudes measured on bulk samples, especially the homogeneous linewidth witch is measured both by RFLN and GSHB on fibre.
Then, the first model of EDFA that takes into account the inhomogeneous aspect of erbium distribution in host matrix was computing. This model qualitatively describes inhomogeneous phenomena such as GSHB.
Finally new materials made for optical amplification were studied. Actually, locally controlled erbium environment - regardless the rest of the matrix - would allow to optimise both luminescence properties of erbium and opto-mechanicals capacity of the EDFA's host matrix. Specific characteristics of erbium in this nanoparticules were demonstrated by spectroscopic measurements.
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Contributor : Romain Peretti <>
Submitted on : Wednesday, February 11, 2009 - 6:35:19 PM
Last modification on : Friday, October 23, 2020 - 4:37:45 PM
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Romain Peretti. Saturation spectrale de gain dans les amplificateurs à fibres dopées erbium : largeurs homogène et inhomogène et approche des nanomatériaux. Physique Atomique [physics.atom-ph]. Université Claude Bernard - Lyon I, 2008. Français. ⟨tel-00360736⟩

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