Shichao Zheng

Structure and spectroscopic properties of Er3+/Ce3+ co-doped TeO2-Bi2O3-TiO2 glasses modified with various WO3 contents for 1.53 μm emission

The Er3+/Ce3+co-doped tellurite-based glasses(TeO2-Bi2O3-TiO2)modified with various WO3contents are prepared using conventional melt-quenching technique.The X-ray diffraction(XRD)patterns and Raman spectra of glass samples are measured to investigate the structures.The absorption spectra,the up-conversion emission spectra,the 1.53μm band fluorescence spectra and the lifetime of Er3+:4I13/2level are measured,and the amplification quality factors of Er3+are calculated to evaluate the effect of WO3contents on the 1.53μm band spectroscopic properties.With the introduction of WO3,it is found that the prepared tellurite-based glasses maintain the amorphous structure,while the1.53μm band fluorescence intensity of Er3+is improved evidently,and the fluorescence full width at half maximum(FWHM)is broadened accordingly.In addition,the prepared tellurite-based glass samples have larger bandwidth quality factor than silicate and germanate glasses.The results indicate that the prepared Er3+/Ce3+co-doped tellurite-based glass with a certain amount of WO3is an excellent gain medium applied for the 1.53μm band Er3+-doped fiber amplifier(EDFA).

Structure and spectroscopic properties of Er 3+ /Ce 3+ co-doped TeO 2 -Bi 2 O 3 -TiO 2 glasses modified with various WO 3 contents for 1.53 μm emission

The Er3+/Ce3+co-doped tellurite-based glasses(TeO2-Bi2O3-TiO2)modified with various WO3contents are prepared using conventional melt-quenching technique.The X-ray diffraction(XRD)patterns and Raman spectra of glass samples are measured to investigate the structures.The absorption spectra,the up-conversion emission spectra,the 1.53μm band fluorescence spectra and the lifetime of Er3+:4I13/2level are measured,and the amplification quality factors of Er3+are calculated to evaluate the effect of WO3contents on the 1.53μm band spectroscopic properties.With the introduction of WO3,it is found that the prepared tellurite-based glasses maintain the amorphous structure,while the1.53μm band fluorescence intensity of Er3+is improved evidently,and the fluorescence full width at half maximum(FWHM)is broadened accordingly.In addition,the prepared tellurite-based glass samples have larger bandwidth quality factor than silicate and germanate glasses.The results indicate that the prepared Er3+/Ce3+co-doped tellurite-based glass with a certain amount of WO3is an excellent gain medium applied for the 1.53μm band Er3+-doped fiber amplifier(EDFA).