氟锆酸盐玻璃光纤的研制

本文介绍聚全氟乙丙烯包皮的氟锆酸盐(ZrF_4-BaF_2-LaF_3-AlF_3-NaF)玻璃光纤的制备方法.研究了各种工艺因素对氟锆酸盐玻璃和光纤散射损耗的影响.结果表明,选择适当的熔化温度和均化时间,玻璃熔化和光纤拉制时环境中低的水含量是制得的损耗氟锆酸盐玻璃光纤的关键;配合料中引入适量NH_4HF_2,选用温度结构合理的拉丝炉及拉丝工艺也有助于降低光纤的损耗.在此工作基础上,获得了波长2.32μm处损耗为0.24dB/m的氟锆酸盐玻璃光纤.

Preparation of fluorozirconate glass fiber

Heavy metal fluoride glass fiber, such as fluorozirconate glass fiber, has attracted considerable attention as a new generation of optical fiber for telecommunication and as a new fiber laser material. This papar presents the preparation techniques of infrared transmitting fiber with ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) glass as the core and with teflon FEP as the cladding. The effect of technological parameters on the scattering loss of fluoroziconate glass fiber is studied. It is shown that the glass-melting temperature, the homogenizing time, and the ater content in the environment during the glass-melting and the fiber-drawing process are very important technological parameters in order to reduce the scattering loss. Moreover, the NH4HF2 content in the batch, the temperature distribution in the fiber-drawing furnace, and fiber drawing technology also have influence on the scattering loss of the fiber. Based on these studies, the FEP-cladding fluorozirconate glass fiber with a minimum loss of 0.24 dB/m a 2.32 μm is obtaiend.