Fluoride-Sulfophosphate/Silica Hybrid Fiber as a Platform for Optically Active Materials
Fluoride-Sulfophosphate/Silica Hybrid Fiber as a Platform for Optically Active Materials
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DOI：
10.3389/fmats.2019.00148
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发表时间：
2019-07
影响因子：
3.2
通讯作者：
Wei-Chao Wang;Xu Yang;T. Wieduwilt;M. Schmidt;Qin-yuan Zhang;L. Wondraczek
中科院分区：
文献类型：
--
作者：
Wei-Chao Wang;Xu Yang;T. Wieduwilt;M. Schmidt;Qin-yuan Zhang;L. Wondraczek
预制微毛细管的压力辅助熔融填充 (PAMF) 已被证明是利用不寻常的材料组合制造混合光纤 (HOF) 的有效方法。在这里，我们将 PAMF 的适用性扩展到多阴离子氟化物-磺基磷酸盐 (FPS) 玻璃。 FPS 玻璃为各种过渡金属 (TM) 和稀土 (RE) 离子种类提供扩展的传输窗口和高溶解度。因此，使用 PAMF 制造 FPS/二氧化硅 HOF 可以作为各种光学有源光纤器件的平台。出于演示目的，这里我们分别选择 Cr3+ 和 Mn2+ 掺杂的 FPS。对于这两种玻璃，我们展示了大块材料的光谱特性如何在 HOF 中保持不变。使用双芯光纤结构，其中波导在主 GeO2-SiO2 芯中进行，与次级 FPS 填充芯的模式耦合允许利用掺杂 FPS 玻璃的光学活性，即使在高固有损耗的情况下也是如此。
Pressure-assisted melt filling (PAMF) of pre-fabricated micro-capillaries has been proven an effective way of fabricating hybrid optical fiber (HOF) from unusual combinations of materials. Here, we extend the applicability of PAMF to multi-anionic fluoride-sulfophosphate (FPS) glasses. FPS glasses provide extended transmission windows and high solubility for various transition metal (TM) and rare-earth (RE) ion species. Using PAMF for fabricating FPS/silica HOFs can therefore act as a platform for a broad variety of optically active fiber devices. For demonstration purposes, here, we select Cr3+ and Mn2+ doped FPS, respectively. For both glasses, we demonstrate how the spectral characteristics of the bulk material persist also in the HOF. Using a double-core fiber structure in which waveguiding is conducted in a primary GeO2-SiO2 core, mode-coupling to the secondary FPS-filled core allows for exploiting the optical activity of the doped FPS glass even for high intrinsic loss.