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Preform fabrication and drawing of KNbO3 modified tellurite glass fibers

机译:KNbO3改性碲酸盐玻璃纤维的瓶坯制造和拉伸

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摘要

For fiberization of tellurite glasses the 70TeO(2)-25ZnO-5Na(2)O composition is selected based on its good thermal stability and refractive index compatibility with most of the ferroelectric oxides. A modified built-in casting method is used to fabricate preforms. The fiber drawn by the rod-in-tube technique consists of two layers of cladding glass and a core with 5 mol% ferroelectric KNbO3. In this study we also address the low mechanical strength problem with tellurite glass fibers, by subjecting the preforms to polishing and wet chemical etching. Apart from the fabrication methods, we also report here a selective core heat-treatment and ferroelectric phase crystallization in a low dimensional system. (c) 2006 Elsevier B.V. All rights reserved.
机译:对于碲化玻璃的纤维化,选择70TeO(2)-25ZnO-5Na(2)O组合物是基于其良好的热稳定性和与大多数铁电氧化物的折射率兼容性。一种改进的内置浇铸方法用于制造瓶坯。通过管中棒技术拉伸的纤维由两层包层玻璃和一个含5 mol%铁电KNbO3的纤芯组成。在这项研究中,我们还通过对预成型坯进行抛光和湿法化学蚀刻来解决碲酸盐玻璃纤维的低机械强度问题。除了制造方法外,我们还报告了在低维系统中的选择性堆芯热处理和铁电相结晶。 (c)2006 Elsevier B.V.保留所有权利。

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