Thermal and structural characterization of erbium-doped borosilicate fibers with low silica content containing various amounts of P2O5 and Al2O3

Kevin Bourhis, Yaroslav Shpotyuk, Jonathan Massera, Ville Aallos, Thierry Jouan, Catherine Boussard-Plédel, Bruno Bureau, Laeticia Petit, Joona Koponen, Mikko Hupa, Leena Hupa, Monica Ferraris

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    We report results on the processing and characterization of different glass preforms and single core fibers within the SiO2–Na2O–B2O3–Er2O3–P2O5–Al2O3 system. Micro-Raman spectroscopy was used to identify post-draw structural modification. The differences in the micro-Raman spectra recorded on the preform and on the fiber glass were attributed to a change in the structure induced by the drawing process. Changes in the silicate network organization and small scale molecular orientation within the glass matrix are suspected to occur during the fiber drawing process. We found that the extent in the changes between the preform and fiber properties depend on the glass composition. The glass network of the Al-containing fiber is expected to be less sensitive to the drawing process than that of the fiber matrix as the network of this Al-containing fiber is formed by a larger number of Si-BO units in the network and neutral three-coordinated boron compared to the network of the fiber matrix. From the micro-Raman spectra, formation of small crystals is suspected to occur in the P-containing glasses during the fiber drawing process. The resulting fibers were found to have propagation losses at 1330 nm and Er3+ absorption between (7 ± 1) and (25 ± 1) dB/m and (36 ± 1) and (47 ± 1) dB/m, respectively, depending on the glass composition.
    Original languageUndefined/Unknown
    Pages (from-to)87–92
    JournalOptical Materials
    Volume37
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Cite this