Sur la base de caractérisations expérimentales spécifiques, nous proposons un modèle physique validé de la dégradation radio-induite locale dans les fibres optiques dopées terres-rares (erbium et ytterbium principalement) en conditions d'amplification. Ce modèle peut être implémenté naturellement dans les systèmes d'équations aux dérivées...
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December 12, 2016 (v1)Conference paperUploaded on: December 4, 2022
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December 7, 2015 (v1)Conference paper
L'analyse croisée de la thermoluminescence résolue spectralement, de l'atténuation radio-induite et du blanchiment thermique d'échantillons de préformes présentant des compositions de complexité croissante (silice, silice dopée aluminium ou ytterbium, alumino-silicate dopée ytterbium, alumino-silicate co-dopée ytterbium et cérium) permet de...
Uploaded on: February 28, 2023 -
December 1, 2014 (v1)Conference paper
La tenue des amplificateurs à fibres en silice dopées ytterbium (FDY) opérés en environnement sévère pose la question de l'interaction entre le photo-noircissement (PN) et le radio-noircissement (RN), c'est à dire de la dégradation subie lorsque l'amplificateur est soumis à l'action simultanée de la pompe et de l'irradiation ionisante. Bien...
Uploaded on: February 28, 2023 -
June 16, 2014 (v1)Conference paper
We present original characterizations of photo-radio-darkening in ytterbium-doped silica optical fibres submitted to the simultaneous action of the pump and of an ionizing radiation. We present the interplay between both radiations, showing e.g. that the pump is able to darken or bleach the fibre depending on the ionizing dose. The...
Uploaded on: February 28, 2023 -
December 2015 (v1)Journal article
This work investigates the local interplay between radiation-induced darkening and pump-induced bleaching in erbium-doped silica optical fibers. Thanks to proper characterization conditions using short fiber samples, we demonstrate that degradation levels can be tuned reversibly between equilibrium levels by varying the pump power and/or the...
Uploaded on: March 26, 2023 -
October 29, 2014 (v1)Conference paper
Nous proposons un modèle physique de photo-, radio-et photo-radio-noircissement des fibres optiques en silice dopées ytterbium. Ce travail est complémentaire de celui soumis par Duchez et al., dans cette conférence, qui présente une caractérisation expérimentale des effets simultanés de la pompe (photo-noircissement) et des radiations...
Uploaded on: February 28, 2023 -
June 16, 2014 (v1)Conference paper
We propose a physical model of photo-, radio-, and simultaneous photo-radio-darkening of Yb-doped silica optical fibers. This work is complementary to the submission by J-B. Duchez et al., also in this conference, which reports a detailed characterization of the interplay between the pump (photo-darkening) and an external ionizing radiation...
Uploaded on: February 28, 2023 -
July 13, 2015 (v1)Conference paper
We show that local EDFA degradation can be tuned reversibly across equilibrium levels determined by local pump power and dose rate, while the dose is cumulated. This remarkable property inspires a physical, validated degradation model.
Uploaded on: February 28, 2023 -
October 29, 2014 (v1)Conference paper
Nous présentons des caractérisations originales de photo-radio-noircissement dans des fibres en silice dopées Ytterbium soumises à l'action simultanée de la pompe et de radiations ionisantes externes. Nous présentons l'interaction entre ces deux types de rayonnements, montrant ainsi que la pompe est capable de noircir ou blanchir la fibre en...
Uploaded on: February 28, 2023 -
2014 (v1)Journal article
We propose a model to describe the photo-or/and the radiation-induced darkening of ytterbium-doped silica optical fibers. This model accounts for the well-established experimental features of photo-darkening. Degradation behaviors predicted for fibers pumped in harsh environments are also fully confirmed by experimental data reported in the...
Uploaded on: March 26, 2023 -
2014 (v1)Journal article
We present original characterizations of photo-radio-darkening in ytterbium-doped silica optical fibers submitted to the simultaneous action of the pump and of an ionizing radiation. We present the interplay between both radiations, showing e.g. that the pump is able to darken or bleach the fiber depending on the ionizing dose. The photo-...
Uploaded on: March 26, 2023 -
December 7, 2015 (v1)Conference paper
L'étude des pertes radio-induites dans les fibres optiques dopées Ytterbium ou Erbium, en condition de pompage actif a permis de mettre en évidence, sur des fibres courtes, la présence de niveaux d'équilibre de la dégradation. Ces derniers peuvent être atteints de manière réversible par variation de la puissance de pompe et ou du débit de dose.
Uploaded on: February 28, 2023 -
June 16, 2014 (v1)Conference paper
In this paper we report results of thermal anneal study to investigate the correlation between radiation effects on erbium-doped aluminosilicate fibres made by MCVD and the increase of the optical absorption of AlE' and NBOHC centres. Thermolumiscence and absorption measurements in the UV-Visible and NIR domains clearly show that Er 3+ ions are...
Uploaded on: February 28, 2023 -
2014 (v1)Journal article
The gain of erbium doped fiber amplifiers is damaged by irradiation partly because of creation of color centers responsible of excess absorption at pump and signal wavelengths. Based on the combination of thermally stimulated luminescence and spectrophotometry, this letter demonstrates that a part of the gain loss should be associated with the...
Uploaded on: March 26, 2023