Tm3+-Doped Gallium–Germanium–Bismuth–Lead Glasses as 1.47 m Fiber Amplifier Materials

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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.

Document Type: Research Article


Affiliations: 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: January 1, 2007

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