基于衰减来源的G.652.D光纤谱矩阵分析和优化  

Analysis and Optimization of G.652.D Fibre Spectral Matrix based on Loss Sources

作　　者：刘泰 李婧 韩超 张立岩 李婷婷 王晨 LIU Tai;LI Jing;HAN Chao;ZHANG Liyan;LI Tingting;WANG Chen(China Academy of Information and Communications Technology,Beijing 100088,China;Yangtze Optical Fibre and Cable Joint Stock Limited Company,Wuhan 430074,China)

机构地区：[1]中国信息通信研究院,北京100088 [2]长飞光纤光缆股份有限公司,武汉430074

出　　处：《光通信研究》2024年第2期63-70,共8页Study on Optical Communications

摘　　要：【目的】文章面向光纤研发制造和光系统开发,结合单模光纤的衰减来源对G.652.D单模光纤衰减谱的数值特性和光纤衰减谱特性矩阵进行研究,以分析优化光纤衰减谱模型的数学表达方式,提升对光纤衰减谱的数字化建模能力。【方法】ITU-T G.650.1(2020)标准给出了通过谱衰减模型法计算G.652.D单模光纤衰减谱的样例矩阵。文章结合光纤衰减来源分析论证了谱衰减模型法可以对应4个波长的衰减谱特性矩阵近似计算得到光纤衰减谱且误差较低的原因,结合衰减来源计算得到形式优化的衰减谱特性矩阵,并对1 000个样本光纤的衰减谱测试数据进行验算分析。【结果】文章主要研究结果包括:(1)在G.652.D光纤的衰减谱特性矩阵对应波长与光纤的主要衰减来源有良好对应关系时,谱衰减模型法能够以较小的误差近似计算光纤衰减谱;(2)结合光纤衰减来源计算了G.652.D单模光纤的衰减谱特性矩阵,该矩阵在形式上相比仅由数据计算得到的特性矩阵更能够反映光纤的衰减机理;(3)对样本光纤衰减谱测试数据的验算分析验证了新矩阵可以同样以较小的误差有效地计算光纤样本的衰减谱。【结论】文章研究得出,谱衰减模型法能够用于近似计算光纤衰减谱的原因是,衰减谱特性矩阵的对应波长与光纤的主要衰减来源有良好的对应关系,结合衰减来源可以计算优化特性矩阵,新矩阵能够反映光纤的衰减机理并经验算可以同样以较小误差有效地计算光纤样本的衰减谱。【Objective】This paper studies numerical characteristics and characteristic matrix of attenuation spectrum of G.652.D single-mode optical fibres,and considers the attenuation factor to optimize the mathematical expression of optical fibre attenuation spectrum model.The study aims to improve the digital modeling ability of optical fibre attenuation spectrum for research and manufacturing of optical fibre and development of optical system.【Methods】ITU-T G.650.1(2020)provides an example matrix for use in the“spectral attenuation modelling”method to calculate attenuation spectrum of G.652.D single-mode optical fibres.This paper analyzes and demonstrates that the spectral attenuation model method could approximately obtain optical fibre attenuation spectrum with low error by characteristic matrix corresponds to four wavelengths.An optimized attenuation spectrum characteristic matrix is given by considering sources of attenuation,and the effect of the new matrix is verified with attenuation spectrum test data of 1000 fibre samples.【Results】Main research results of this paper include:(1)When there is a good correspondence between the wavelengths corresponding to the fibre attenuation spectrum characteristic matrix and main attenuation sources of G.652.D fibre,the spectral attenuation model method is able to approximate the fibre attenuation spectrum with small errors;(2)An attenuation spectrum characteristic matrix of G.652.D single mode fibre is calculated based on attenuation sources of the fibre,and this matrix is able to reflect mechanism of fibre attenuation better,compared to the characteristic matrix calculated solely from data;(3)Verification with test data of optical fibre samples shows that the new matrix could calculate the attenuation spectrum of optical fibre samples with comparable small errors.【Conclusion】This paper studies and concludes that the reason why the spectral attenuation model method is able to approximate the optical fibre attenuation spectrum is that the corresponding wavel

关 键 词：光纤 G.652 衰减谱 特性矩阵 数字化 

分 类 号：TN818[电子电信—信息与通信工程]