Enhanced 1.32 μm fluorescence and broadband amplifying for O-band optical amplifier in Nd³⁺-doped tellurite glass

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• 作者：Zi-zhong Zhou 周自忠 ; Ming-han Zhou 周明翰 ; Xiu-e Su 苏秀娥 ; Pan Cheng 程盼…
• 刊名：Optoelectronics Letters
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：13
• 期：1
• 页码：54-57
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Optics, Lasers, Photonics, Optical Devices;
• 出版者：Tianjin University of Technology
• ISSN：1993-5013
• 卷排序：13

文摘

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 μm band fluorescence emission. The absorption spectra, Raman spectra, 1.32 μm 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 μm band fluorescence. It is shown that the introduction of an appropriate amount of WO₃ oxide can effectively improve the 1.32 μm 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.