OPGW光缆生产中的光纤特性变化  

Discussion on the Changes of OPGW Feature During the Production

作　　者：戴富梁 

机构地区：[1]江苏藤仓亨通光电有限公司,江苏吴江215234

出　　处：《电力系统通信》2011年第3期67-69,共3页Telecommunications for Electric Power System

摘　　要：光纤截止波长、模场直径、色散、数值孔径等参数取决于光纤折射率分布和几何尺寸,在光缆生产过程中这些参数基本保持不变。但由于光纤受力后会产生光弹性效应,导致折射率变化,所以理论上光纤性能不是恒定不变。如果光纤衰减、强度以及老化等问题与光缆生产工艺及光缆材料有关,在光缆生产过程中,会有残余应力存留于光纤中,在高温、高湿、低温环境中,如果光缆生产工艺不合理,光缆材料析氢等问题会导致光纤衰减和强度特性下降,严重影响光缆使用寿命。文章分析了在OPGW光缆生产过程中,光纤特性可能发生的变化。Optical fiber cutoff wavelength,mode field diameter,dispersion,numerical aperture are decided by the optical fiber refractive index distribution and the geometry size,these parameters maintain invariable basically in the cable production process.However,the force will be formed fiber photo elastic effect,leading to refractive index changes,so in theory,optical fiber performance is not constant.The attenuation,intensity and aging of optical fiber are closely related to cable technique of production and the material.During the manufacturing process,the retained stress will be stored in optical fiber cable.If the environmental temperature is too high or too low,or humidity is too high,cable materials precipitation hydrogen and other issues will cause the drop of attenuation and the intensity of optical fiber,which will seriously affect the cable lifetime.This paper analyses the changes of OPGW feature during the production.

关 键 词：OPGW 光纤筛选 强度 老化 

分 类 号：TN913.7[电子电信—通信与信息系统]