基于非相干光频域反射的多芯光纤网络链路缺陷智能检测  

Intelligent detection of link defects in multi-core optical fiber networks based on incoherent optical frequency domain reflection

作　　者：丁小峰[1] 夏群[1] 阴艳丽[1] DING Xiaofeng;XIA Qun;YIN Yanli(School of information and Artificial Intelligence,Nanchang Institute of Science and Technology,Nanchang 330108,China)

机构地区：[1]南昌工学院信息与人工智能学院,南昌330108

出　　处：《激光杂志》2024年第5期164-169,共6页Laser Journal

基　　金：江西省教育厅科学技术研究项目(No.GJJ212509)。

摘　　要：为了保证通信安全稳定、数据传输完整,提出了一种基于非相干光频域反射的多芯光纤网络链路缺陷智能检测。先构建多芯光纤网络数学模型,约束光纤节点映射和频谱分配,使频谱数量最少的同时占用的频隙数最大。然后利用分簇检测建立数据传输链路模型,得出通信传输函数,根据相关匹配滤波器调整链路,通过波特间隔均衡完成链路数据采集。最后运用非相干光频域反射步进频率调制产生的瑞利散射光波,结合傅里叶逆变换获得网络健康状况空间分布位置,实现多芯光纤网络链路缺陷智能检测。实验结果表明,所提方法能够准确检测出链路缺陷,对链路阻塞缺陷检测、链路平均故障风险检测率、链路频谱利用率缺陷检测误差分别小于0.4%、0.2%和0.5,且检测时长控制在1.5 s以内,可帮助网络及时恢复运行。In order to ensure the security and stability of communication and the integrity of data transmission,an intelligent detection of link defects in multi-core optical fiber network based on incoherent optical frequency domain reflection is proposed.Firstly,the mathematical model of multi-core optical fiber network is constructed,and the optical fiber node mapping and spectrum allocation are constrained,so that the minimum frequency spectrum occupies the maximum number of frequency gaps.Then the data transmission link model is established by cluster detection,and the communication transmission function is obtained.The link is adjusted according to the correlation matching filter,and the link data is collected by baud interval balancing.Finally,Rayleigh scattered light waves generated by incoherent optical frequency domain reflection step frequency modulation are used to obtain the spatial distribution position of network health by combining with inverse Fourier transform to realize intelligent detection of multi-core optical fiber network link defects.The experimental results show that the proposed method can accurately detect link defects,with detection errors of less than 0.4%,0.2%,and 0.5 for link blocking defect detection,link average fault risk detection rate,and link spectrum utilization defect detection,respectively.The detection time is controlled within 1.5 seconds,which can help the network recover operation in a timely manner.

关 键 词：非相干光频域反射 多芯光纤网络 网络链路缺陷 链路数据采集 载频编码 

分 类 号：TN915[电子电信—通信与信息系统]