公开(公告)号：US5285518A

公开(公告)日：1994-02-08

申请号：US850747

申请日：1992-03-13

申请人： Abdessamad Elyamani ,  Robert Pafchek

发明人： Abdessamad Elyamani ,  Robert Pafchek

IPC分类号： C03C13/04 ,  G02B6/10 ,  G02B6/00

CPC分类号： G02B6/102 ,  C03C13/042 ,  Y10S501/904

摘要： An optical fiber having a core with a composition consisting essentially of 48 to 60 mole percent ZrF.sub.4, 15 to 25 mole percent BaF.sub.2, 1 to 5 mole percent LaF.sub.3, 1 to 5 mole percent AlF.sub.3, 15 to 22 mole percent NaF, and 1 to 8 mole percent ThF.sub.4 ; and a cladding having an index of refraction lower than that of the core. The glass of the core can be doped, for example, with rare earths. Built-in casting, rotational casting, casting around a rod, and rod-in-tube methods can be used to produce optical fibers having a composition in accordance with the present invention and having improved resistance to crystallization, as compared to ZBLAN glasses, even in the presence of rare earth dopants.

摘要翻译： 具有核心的光纤，其组成基本上由ZrF 4的48至60摩尔％，BaF 2为15至25摩尔％，LaF 3为1至5摩尔％，AlF 3为1至5摩尔％，AlF 3为15至22摩尔％，NaF为1至 8摩尔％ThF4; 以及具有比芯的折射率低的折射率的包层。 芯的玻璃可以例如掺杂稀土。 与ZBLAN眼镜相比，内置铸造，旋转铸造，围绕杆的铸造和棒管式方法可用于制造具有根据本发明的组合物并且具有改善的耐结晶性的光纤，甚至 在稀土掺杂物的存在下。