Abstract

With the aim to find the best-suited host glass for radiation-resistant erbium-doped fibers (EDF), radiation-induced absorption (RIA) is measured and analyzed after γ-irradiation to 3.0–4.5 kGy in 18 silica optical fibers with various concentrations of dopants: Al<sub>2</sub>O<sub>3</sub>, P<sub>2</sub>O<sub>5</sub>, GeO<sub>2</sub> and Er<sub>2</sub>O<sub>3</sub>. The RIA dependence on the content of Al<sub>2</sub>O<sub>3</sub>, P<sub>2</sub>O<sub>5</sub> and Er<sub>2</sub>O<sub>3</sub> in singly doped fibers is investigated. RIA of fibers codoped simultaneously with Al<sub>2</sub>O<sub>3</sub> and P<sub>2</sub>O<sub>5</sub> are found to be significantly lower than those of singly Al<sub>2</sub>O<sub>3</sub>-doped fibers. This is explained as the result of the formation of AlPO<sub>4</sub>-joins in the silica network. GeO<sub>2</sub> codoping of AlPO<sub>4</sub>-doped silica is shown to further reduce RIA. Nevertheless, the application of H<sub>2</sub>-loading and photobleaching of RIA by 980-nm laser radiation shows that the AlPO<sub>4</sub>- and GeO<sub>2</sub>-codoped silica is outperformed by P-free Al<sub>2</sub>O<sub>3</sub>- and GeO<sub>2</sub>-codoped silica, which is, therefore, concluded to be the best host glass composition for radiation resistant EDFs.

© 2012 IEEE

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription