Golonko Piotr, Sadowska Karolina, Ragiń Tomasz, Kochanowicz Marcin, Miluski Piotr, Dorosz Jan, Kuwik Marta, Pisarski Wojciech, Pisarska Joanna, Leśniak Magdalena, Dorosz Dominik, Żmojda Jacek
Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland.
Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland.
Materials (Basel). 2022 May 26;15(11):3797. doi: 10.3390/ma15113797.
Glass-ceramic is semi-novel material with many applications, but it is still problematic in obtaining fibers. This paper aims to develop a new glass-ceramic material that is a compromise between crystallization, thermal stability, and optical properties required for optical fiber technology. This compromise is made possible by an alternative method with a controlled crystallization process and a suitable choice of the chemical composition of the core material. In this way, the annealing process is eliminated, and the core material adopts a glass-ceramic character with high transparency directly in the drawing process. In the experiment, low phonon antimony-germanate-silicate glass (SGS) doped with Eu ions and different concentrations of PO were fabricated. The glass material crystallized during the cooling process under conditions similar to the drawing processes'. Thermal stability (DSC), X-ray photo analysis (XRD), and spectroscopic were measured. Eu ions were used as spectral probes to determine the effect of PO on the asymmetry ratio for the selected transitions (D → F and D → F). From the measurements, it was observed that the material produced exhibited amorphous or glass-ceramic properties, strongly dependent on the nucleator concentration. In addition, the conducted study confirmed that europium ions co-form the EuPO structure during the cooling process from 730 °C to room temperature. Moreover, the asymmetry ratio was changed from over 4 to under 1. The result obtained confirms that the developed material has properties typical of transparent glass-ceramic while maintaining high thermal stability, which will enable the fabrication of fibers with the glass-ceramic core.
微晶玻璃是一种具有多种应用的半新型材料，但在制备纤维方面仍存在问题。本文旨在开发一种新型微晶玻璃材料，使其在光纤技术所需的结晶、热稳定性和光学性能之间达到平衡。通过一种具有可控结晶过程的替代方法以及对芯材化学成分的适当选择，这种平衡得以实现。通过这种方式，消除了退火过程，芯材在拉丝过程中直接呈现出具有高透明度的微晶玻璃特性。在实验中，制备了掺杂铕离子和不同浓度磷的低声子锑锗酸盐 - 硅酸盐玻璃（SGS）。玻璃材料在类似于拉丝过程的条件下冷却过程中发生结晶。测量了热稳定性（DSC）、X射线光分析（XRD）和光谱。使用铕离子作为光谱探针来确定磷对所选跃迁（D→F和D→F）不对称比的影响。从测量结果观察到，所制备的材料呈现出非晶或微晶玻璃特性，强烈依赖于成核剂浓度。此外，所进行的研究证实，在从730℃冷却至室温的过程中，铕离子共同形成了EuPO结构。而且，不对称比从4以上变为1以下。所获得的结果证实，所开发的材料具有透明微晶玻璃的典型特性，同时保持了高热稳定性，这将使得能够制造具有微晶玻璃芯的纤维。
