title: Experimental evidence of Er³⁺ ion reduction in the radiation-induced degradation of erbium-doped silica fibers.
abstract: 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 reduction of the density of Er3+ ions by irradiation.
authors.forename: Yasmine
authors.initials: Y
authors.lastname: Mebrouk
authors.forename: Franck
authors.initials: F
authors.lastname: Mady
authors.forename: Mourad
authors.initials: M
authors.lastname: Benabdesselam
authors.forename: Jean-Bernard
authors.initials: JB
authors.lastname: Duchez
authors.forename: Wilfried
authors.initials: W
authors.lastname: Blanc