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题名	碲磷和碲钡锶铌系玻璃的拉曼性质研究
作者	温磊
学位类别	硕士
答辩日期	2009
授予单位	中国科学院上海光学精密机械研究所
导师	陈伟
关键词	碲磷玻璃 碲钡锶铌玻璃 拉曼增益 Ga2O3的引入 P2O5的引入
其他题名	The study of Raman properties of tellurite-phosphate glasses and TeO2-BaO-SrO-Nb2O5 glasses
中文摘要	随着人们对光纤通信的数据传输容量与传输速率要求的不断提高，传统的数据传输窗口C波段（1525nm-1565nm）及L波段（1565nm-1625nm）已不能满足大容量高速数据传输的需求，继续扩展数据传输波段范围已成为迫切的需求。而传统的掺铒光纤放大器由于其本身的放大波段限制，将不能满足传输信号全波段放大的需求，而拉曼放大器由于其本身固有的优点则再次引起了人们越来越多的关注度。相比于传统的掺铒光纤放大器而言，拉曼放大器主要有以下两个突出优点：具有比较宽的放大带宽；可放大的波段只与激发光波长有关，可以通过改变激发光波长来调整放大波段。熔石英光纤及锗掺杂熔石英光纤作为拉曼放大器材料已经被广泛的应用于长距离光纤通信网络及局域通信网络中。但是，熔石英光纤较窄的带宽（~5THz）及较低的拉曼增益系数（gR≈0.9×10-13m/W@1μm）限制了它的进一步发展。而现代的通信网络则需要拥有更宽的带宽、更高的增益的材料来代替传统的熔石英材料。新的增益材料须在整个通信窗口具有平坦增益的宽带宽，不需多波长激发即可实现整个通信窗口的光放大。而碲酸盐玻璃由于其优良的非线性光学性质而备受关注。本论文工作则以碲磷玻璃体系和碲钡锶铌（TBSN）玻璃体系为基础，研究了此体系的光谱性质以及引入一系列金属氧化物后对拉曼增益性能的影响。 本论文首先研究了碲磷玻璃体系的成玻璃范围，着重研究了在TeO2-P2O5系统中引入PbF2、PbCl2、ZnF2等对成玻璃性能的影响，在此基础上进一步研究了在此玻璃体系中掺入Er3+及Yb3+的上转换发光性能，该玻璃系统在上转换发光方面表现出与以往玻璃不同的特性，上转换红光强度远高于绿光强度，因此可进一步研究其作为上转换红光发光材料的性能。此外，在简单系统TeO2-P2O5中引入Ga2O3、GeO2、WO3，研究了他们对于系统拉曼放大性能的影响，详细分析了拉曼光谱所对应的玻璃内部结构，对比了三者的引入对于改善此系统拉曼谱线平坦度的差异。 在TeO2-BaO-SrO-Nb2O5（TBSN）系统中，着重研究了Ga2O3与P2O5对此系统拉曼增益性能的影响，发现TBSN-P体系中，相对拉曼散射截面随P2O5含量的增加逐渐减小，而拉曼增益带宽则显著增加；在TBSN-10Ga-P与TBSN-16P-Ga系列中，Ga2O3的存在对350cm-1~1250cm-1的整体谱形起到了一定的平坦作用，但拉曼增益带宽和相对拉曼散射截面均有所下降；并对于此现象，从结构方面进行了较为详细的分析。计算了TBSN-Ga、TBSN-P、TBSN-10Ga-P、TBSN-16P-Ga系列玻璃的拉曼增益系数，分别得到TBSN-4P具有最大的拉曼增益系数为8.70×10-12m/W，TBSN-24P具有最大拉曼增益带宽为621cm-1，分别为熔石英玻璃的45倍和2.95倍。最后，通过对玻璃的热稳定性研究表明，在TBSN-P体系中，P2O5的引入可以使玻璃的热稳定性能显著提高，而在TBSN-Ga体系中，Ga2O3的存在对于改善玻璃热稳定性的作用很小，而在Ga2O3与P2O5同时被引入时，Ga2O3含量的增加会导致玻璃的热稳定性变差。
英文摘要	With the increasing demands of the capacity and speed of data transmission in telecom networks, conventional C and L bands can not meet these increasing demands, but broadening of data transmission band has become an urgently requirement. EDFA can not amplify the signal except C and L bands by its own limitation. On the other hand, Raman amplifiers have attracted more and more attention for their two main advantages, i) relatively broad amplification bandwidth; ii) the amplification bandwidth and position is determined only by the pump laser.Fused silica fibers and germanium-doped fused silica fibers have been widely used as Raman amplification materials in long haul and local networks. Nevertheless, a limited usable bandwidth of ~5 THz and a low Raman gain coefficient (gR≈0.9×10-13m/W@1μm) of fused silica restricted its further development. New Raman candidate materials should possess flat-broadband gain that spans the telecommunication window and have a relatively high Raman gain coefficient. Recently, more and more attentions have been focused on tellurite glasses for their non-linear optical properties. Based on preparing good-quality samples of tellurite-phosphate and TBSN glasses, the spectroscopic properties and the Raman gain properties after introducing some metallic oxides were studied in this paper. Investigated the glass forming region of TeO2-P2O5 system, especially the influence of PbF2、PbCl2、ZnF2 introduction to the glass. And the upconversion spectroscopic properties with Er3+：Yb3+ adding were also investigated. This glass system performs unique upconversion properties compared with other Er3+：Yb3+ doped glasses, that is, its red luminescence is not only higher than the green one, but also prossess a much higher intensity. So further study could be carried out about its property for using as red upconvesion luminescence materials. Ga2O3、GeO2、WO3 was introduced into TeO2-P2O5 system, their influence to the Raman amplifying property was evaluated. According to the Raman results, a somewhat detailed analysis about the glass structure was given. And then, the result of these three components for improving the Raman gain flatness was comlpared. In TeO2-BaO-SrO-Nb2O5（TBSN）system, the effect of Ga2O3 and P2O5 on the Raman property was investigated. Results showed that the relative Raman scattering cross section decreased with P2O5 addition, but the Raman gain bandwidth increased greatly. In TBSN-10Ga-P and TBSN-16P-Gaseries glasses, the existence of Ga2O3 had some flatten influence for 350cm-1~1250cm-1 band, but the relative Raman scattering cross section and Raman gain bandwidth decreased. The structural analysis was presented here too. The Raman gain coefficient of TBSN-Ga、TBSN-P、TBSN-10Ga-P and TBSN-16P-Ga glasses were calculated. TBSN-4P had the largest gain coefficient 8.70×10-12m/W，and TBSN-24P persisted the widest bandwidth 621cm-1，which is the 45 times and 2.95 times of silica, respectively. The study for the crystallization property showed that in TBSN-P system, P2O5 could improved the crystallization stability dramatically. But in TBSN-Ga system; Ga2O3 only had little influence to crystallization stability; while codoping Ga2O3 and P2O5 into TBSN system， Ga2O3 even induced worse crystallization stability.
语种	中文
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/16437]
专题	上海光学精密机械研究所_学位论文
推荐引用方式 GB/T 7714	温磊. 碲磷和碲钡锶铌系玻璃的拉曼性质研究[D]. 中国科学院上海光学精密机械研究所. 2009.

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