Gamma radiation and thermal-induced effects on the spectral performance of BACs in Bi/Er codoped aluminosilicate fibers

Cluster Control for Construction of Bismuth‐Doped Glass Fiber with Broadband Optical Response

“…The popular methods involve the enhancement of the solubility of the Bi dopant, regulating chemical alkalinity, external high-energy radiation, and treatment under a reduction atmosphere. [19][20][21][22][23][24][25][26] Despite being widely explored, the approaches generally lead to the formation of non-active Bi cluster centers and a notable increase in unsaturated loss. [27][28][29][30] The alternative strategy is co-doping with other active centers (such as Er 3+ , Tm 3+ , Yb 3+ , Ni 2+ ) as sensitizers for Bi-active centers.…”

Germanium oxide hybridization enhancing the optical response of Bi‐doped glass and fiber

“…Although various strategies, such as high-energy ray irradiation, heat treatment, and chemical reduction, were constructed to improve the optical response of the glass gain medium, these methods pose great challenges to the practical fabrication of continuous fiber. [29][30][31][32][33] In this work, we make systematical studies about the influence of the germanium oxide hybridization on the optical behavior of Bi-doped glass. The relations among the glass structure evolution, the change of the Bi central valence state, and the optical properties of Bi-doped glass are explored.…”

“…Therefore, it is urgent to improve the optical response of the gain medium. Although various strategies, such as high‐energy ray irradiation, heat treatment, and chemical reduction, were constructed to improve the optical response of the glass gain medium, these methods pose great challenges to the practical fabrication of continuous fiber 29–33 …”