摘要
以Yb^3+掺杂SiO2预制棒为原材料,采用不同拉丝速率的高温拉丝工艺成功制备了石英光纤。利用傅里叶变换红外光谱仪、光纤应力分析仪和Model2500等研究了不同拉丝速率制备的石英光纤的结构、抗拉强度以及衰减特性。结果表明,石英光纤抗拉强度随着拉丝速率的升高先增大后降低,当拉丝速率为1700 m/min时,其制备的石英光纤抗拉强度达到最大,为5.2 GPa;且拉丝速率越大,辐照后就越容易造成内部损坏,造成光纤失效。这主要因为拉丝速率越大,其在高温区中的时间越短,光纤中Si-O链断裂的频率越低,光纤抗拉强度就越高。但随着拉丝速率的继续升高,炉温逐渐升高,同时增加了光纤内部Si-O链断裂的频率,二者共同耦合作用的结果使得光纤强度随拉丝速率呈现先增后减的趋势。当辐照剂量逐渐增加时,石英光纤的辐致损耗呈直线趋势快速增加,但随着辐照量的继续增大,辐致损耗却增加趋缓,逐渐平稳。
Quartz optical fibers were successfully fabricated by high temperature wire drawing at different drawing rates with Yb3+-doped SiO2 preform as raw material.The structure,tensile strength and attenuation characteristics of quartz optical fibers fabricated at different wire drawing rates were studied by Fourier transform infrared spectroscopy,optical fiber stress analyzer and Model 2500.The results showed that the tensile strength of quartz optical fibers increased first and then decreased with the increase of wire drawing rate.When the wire drawing rate was 1700 m/min,the tensile strength of quartz optical fibers reached the maximum of 5.2 Gpa.The higher the wire drawing speed,the easier the internal damage and the failure of optical fibers would be caused by irradiation.This was mainly because the higher the drawing speed,the shorter the time in the high temperature region,the lower the frequency of Si-O chain breakage in the optical fiber,and the higher the tensile strength of the optical fiber.However,as the wire drawing rate continued to increase,the furnace temperature gradually increased,and the frequency of Si-O chain breakage in the fiber increased.The coupling effect of the two made the fiber strength increase first and then decrease with the drawing speed.When the irradiation dose increased gradually,the irradiation loss of quartz optical fibers increased rapidly in a straight line trend,but with the increase of the irradiation dose,the increase of the irradiation loss slowed down and stabilized gradually.
作者
徐鹏
杨一帆
XU Peng;YANG Yifan(College of Communication and Information Engineering, Xi'an University of Posts and Telecommunications,Xi'an 710121, China;College of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第2期2155-2159,共5页
Journal of Functional Materials
关键词
石英光纤
拉丝速率
辐照
抗拉强度
折射率
quartz optical fiber
wire drawing rate
irradiation
tensile strength
refractive index
