光纤预制棒绿色环保制造技术研究

Research on Green and Environmentally Friendly Manufacturing Processof Optical Fiber Preform

针对传统光纤预制棒制造技术存在能耗高、污染大的问题,文章提出了一种以石英砂为原料的绿色环保光纤预制棒外包层制造技术。通过对石英砂原材料的选型分析表明,天然石英砂适用于光纤预制棒的制造。通过对天然石英砂制棒工艺的核心控制点进行研究,将石英砂装填到芯棒和石英薄壁管组成的预制组件内并经过高温融缩成功制备出了平均外径155 mm的大尺寸G.652.D光纤预制棒。所制备的光纤预制棒经过拉丝和测试验证,各项光学参数均达到低水峰光纤的标准要求。该工艺过程中无废气排放且石英砂原料可以得到完全转化,相较于传统制棒技术更为低碳环保。

In view of the defects of high energy consumption and pollution in the traditional optical fiber preform manufacturing process,this paper proposes a green and environmentally friendly cladding manufacturing process with quartz sand as raw material.Through the selection and analysis of quartz sand raw materials,it is shown that natural quartz sand is suitable for the manufacture of optical fiber preforms.Through the research on the key control points of the natural quartz sand preform making process,the quartz sand is filled into the prefabricated assembly consisting of a core rod and a thin-walled quartz tube.A large-size G.652.D optical fiber preform with an average outer diameter of 155 mm is then successfully prepared by high-temperature melting and shrinking.After fiber drawing and testing,the optical parameters can meet the low water peak optical fiber standard.There is no exhaust gas emission in the process raw material of quartz sand can be completely converted,which is more low-carbon and environmentally friendly than traditional optical fiber preform manufacturing process.