4 April 2005 Ultra large amplification bandwidth of Er3+ and Tm3+ at S and L band from TeO2-WO3-Na2O-Nb2O5 glass doped optical fibers
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Abstract
Tellurite glasses optical fibers became promising for optical amplifiers due to its high rare earth ions solubility and very large amplification bandwidth. Among several tellurite glasses the TeO2-WO3-Na2O-Nb2O5 system show one of the largest bandwidth. Our previous characterization of lifetime using the omega2, omega4, omega6, Judd-Ofelt parameters indicate a quantum efficiency maximum for 7500ppm Er3+ concentration. Therefore we decided to produce jointed Er3+ and Tm3+ single mode optical fibers with this glass system keeping the 7500ppm Er3+ concentration and varying the Tm3+ concentration from 2500ppm to 15000ppm. This single mode fiber was pumped by 120mW of the semiconductor laser at 790nm and we observed a flat ASE bandwidth from 1400 to 1570nm for the 5000ppm Tm3+ concentration.
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E. F. Chillcce, Sergio Paulo Osorio, Eugenio Rodriguez, Carlos Lenz Cesar, Luiz Carlos Barbosa, "Ultra large amplification bandwidth of Er3+ and Tm3+ at S and L band from TeO2-WO3-Na2O-Nb2O5 glass doped optical fibers", Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); doi: 10.1117/12.588423; https://doi.org/10.1117/12.588423
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