We report the spectroscopic properties of Tm3+-doped and Tm3+/Ho3+-codoped [Ga2O3–GeO2–Bi2O3–PbO (PbF2)] glasses for S-band optical amplifications. The Judd–Ofelt intensity parameters have been determined based on the measured absorption spectra. It is found that PbF2-modified glasses exhibit a lower Ω2 value, and the addition of PbF2 caused the chemical bond associated with Tm3+ ions to be more ionic. The PbF2-free glasses have large peak emission cross-sections in the range of 2.15–2.18 × 10−21 cm2. Meanwhile, the studied glasses exhibit broad 1.47 m emission with the full width at half-maximum of 119–126 nm. The results indicate that these glasses are useful host material for broadband S-band fiber amplifiers.
No Supplementary Data
Document Type: Research Article
Key Laboratory of Specially Functional Materials and Advanced Manufacturing Technology of Ministry of Education and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510640, China
Publication date: 2007-01-01