ZHOU Zi-zhong,ZHOU Ming-han,SU Xiu-e,CHENG Pan,ZHOU Ya-xun.Enhanced 1.32 ?m fluorescence and broadband amplifying for O-band optical amplifier in Nd3+-doped tellurite glass[J].Optoelectronics Letters,2017,13(1):54-57 Enhanced 1.32 ?m fluorescence and broadband amplifying for O-band optical amplifier in Nd3+-doped tellurite glass Author Name Affiliation ZHOU Zi-zhong  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  ZHOU Ming-han  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  SU Xiu-e  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  CHENG Pan  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  ZHOU Ya-xun  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  Abstract:       WO3 oxides with relatively high phonon energy and different concentrations were introduced into the Nd3+-doped tellurite-based glasses of TeO2-ZnO-Na2O to improve the 1.32 ?m band fluorescence emission. The absorption spectra, Raman spectra, 1.32 ?m band fluorescence spectra and differential scanning calorimeter (DSC) curves were measured, together with the Judd-Ofelt intensity parameters, stimulated emission and gain parameters were calculated to evaluate the effects of WO3 amount on the glass structure and spectroscopic properties of 1.32 ?m band fluorescence. It is shown that the introduction of an appropriate amount of WO3 oxide can effectively improve the 1.32 ?m band fluorescence intensity through the enhanced multi-phonon relaxation (MPR) processes between the excited levels of Nd3+. The results indicate that the prepared Nd3+-doped tellurite glass with an appropriate amount of WO3 oxide is a potential gain medium applied for the O-band broad and high-gain fiber amplifier. Hits: 3674 Download times: 0 View Full Text    Download reader