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首页> 外文期刊>Optica applicata >Detecting faulty fiber with centralized failure detection system (CFDS) in fiber-to-the-home (FTTH) access network
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Detecting faulty fiber with centralized failure detection system (CFDS) in fiber-to-the-home (FTTH) access network

机译：使用光纤到户（FTTH）接入网络中的集中式故障检测系统（CFDS）检测故障光纤

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摘要

A new technique for detecting any faulty fiber and identifying the failure location occurring in tree-based structured fiber-to-the-home (FTTH) access network with centralized failure detection system (CFDS) based on Visual Basic is proposed and experimentally demonstrated in the paper, CFDS is installed with optical line terminal (OLT) at central office (CO) to monitor the network system and detect any failure that occurs in multi-line drop region of FTTH access network downwardly from CO towards customer premises. CFDS enables the status of each optical network unit (ONU) connected line to be displayed on a computer screen with capability to configure the attenuation and detect the failure simultaneously. The failure analysis and information is delivered to the field engineers for prompt actions, and meanwhile the failure line is restored to stand-by line to ensure a continuous traffic flow. This approach has bright prospects of improving the survivability and reliability as well as increasing the efficiency and monitoring capabilities in FTTH access network. Besides, it is able to overcome the upwardly or downwardly monitoring issues with conventional fiber fault localization technique by using optical time domain reflectometer (OTDR). With CFDS database, the histories of scanning process and data can be recalled and further analysis can possibly be conducted.
机译：提出了一种基于Visual Basic的集中式故障检测系统（CFDS），用于检测任何故障光纤并识别在基于树的结构化光纤到户（FTTH）接入网络中出现的故障位置的新技术，并在实验中进行了实验证明。白皮书中，CFDS在中心局（CO）上安装了光线路终端（OLT），以监视网络系统并检测从FT到客户房屋向下的FTTH接入网络的多线路分支区域中发生的任何故障。 CFDS可使每条光网络单元（ONU）连接的线路的状态显示在计算机屏幕上，并具有配置衰减和同时检测故障的能力。故障分析和信息将交付给现场工程师，以便迅速采取措施，同时故障线恢复为备用线，以确保连续的业务流。这种方法在改善生存能力和可靠性以及提高FTTH接入网络的效率和监视能力方面具有广阔的前景。此外，它可以通过使用光学时域反射仪（OTDR）来克服传统光纤故障定位技术对向上或向下监视的问题。使用CFDS数据库，可以回顾扫描过程和数据的历史记录，并可以进行进一步的分析。

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