VAD法制备大尺寸芯棒的研究  

Research on VAD method of fabricating large size core rod

作　　者：王兵钦 王樯 何炳 蒋锡华 尹中南 梁伟 崔德运 WANG Bingqin;WANG Qiang;HE Bing;JIANG Xihua;YIN Zhongnan;LIANG Wei;CUI Deyun(Jiangsu Tongding Optical Fiber Preform Co.Ltd,Suzhou Jiangsu 215200,China)

机构地区：[1]江苏通鼎光棒有限公司,江苏苏州215200

出　　处：《光通信技术》2020年第10期47-52,共6页Optical Communication Technology

基　　金：江苏省苏州市科技发展计划(重点产业技术创新)项目(SGC201950)资助。

摘　　要：为了提高芯棒尺寸并同时保持理想的沉积效率和合格的光学参数,采用气相轴向沉积法对影响芯棒尺寸的主要因素进行研究,优化沉积喷灯数量、包灯SiCl4流量和soot体提升速率。实验结果表明:三喷灯沉积工艺中,增加第一、第二包灯SiCl4原料流量至4.0 slm、5.0 slm且降低提升速率至85 mm/h时,沉积速率显著提高至15.8 g/min,soot体密度增大至0.319 g/cm^3,芯棒尺寸增大至99.1 mm,同时兼顾沉积效率至52.2%,并保持良好的G.652D单模光纤折射率剖面。In order to increase core rod size and maintain the ideal deposition efficiency and qualified optical parameters,this paper studies the main factors affecting the core rod size by vapor phase axial deposition method.The number of deposition blowtorch,the flow rate of SiCl4 and the lifting rate of soot body are optimized.In the deposition process of three blowtorches,when the flow rate of SiCl4 in the first and second clad blowtorch is increased to 4.0 slm and 5.0 slm,and the lifting rate is reduced to 85 mm/h,the experimental results show that the deposition rate increases to 15.8 g/min,the bulk density of soot body increases to 0.319 g/cm^3,the core rod size increases to 99.1 mm,and the deposition efficiency reaches 52.2%,and the refractive index profile of G.652D single-mode fiber is maintained.

关 键 词：气相轴向沉积法 大尺寸芯棒 喷灯数量 SiCl4流量 提升速率 沉积效率 

分 类 号：TN253[电子电信—物理电子学]