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Personne :
Messaddeq, Younès

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Messaddeq

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Younès

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Université Laval. Département de physique, de génie physique et d'optique

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ncf11860592

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20231
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Sujet: Erbium × Sujet: Amplificateurs optiques -- Propriétés thermiques ×

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  • PublicationAccès libre
    The role of tungsten oxide in Er3+ -doped bismuth germanate glasses for optical amplifcation in L-band
    (Nature Publishing Group, 2023-05-31) Çamiçi, Hüseyin Can; Messaddeq, Younès; Guérineau, Théo; Rivera, V. A. G; Falci, Rodrigo Ferreira; LaRochelle, Sophie
    A series of novel Er³+-doped bismuth-germanate glasses containing diferent tungsten concentrations with a molar composition of 97.5[(75 − x)GeO₂–25Bi₂O₃–(x)WO₃]–2Sb₂O₃–0.5Er₂O₃ (x = 5, 10, 15, 20, and 25 mol%) were fabricated. Their thermal properties are measured by diferential scanning calorimetry. A structural investigation by Raman spectroscopy suggested that changes occurred in the glass network by WO3 incorporation. By laser excitation at 980 nm, a strong emission from Er³+ ions at 1532 nm is observed, while the WO₃ addition caused changes in the emission spectra. The emission cross-section spectra of Er³+ are calculated by both McCumber and Füchtbauer–Ladenburg theories and their comparison showed these theories yielded slightly diferent results, but in both cases, the calculations showed that a gain signal in L-band can be achieved when 30% of the Er³+ ions are at the excited state. This study proves that the Er³+-doped bismuth-germanate glasses are suitable for ₂optical fber amplifer applications operating at C- and L-band.