We propose a method to estimate the amplitude of an unexpected power loss which, leveraging on a calibration, enables the real-time monitoring of a network link. It is based on an existing fiber-longitudinal power profile evaluation technique. The reliability of the method is assessed experimentally. When the anomaly is located at 0 km from the beginning of the span, the estimation bias is smaller than 0.2 dB for losses up to 10 dB. When the anomaly is located at 25 km from the beginning of the span, the same estimation bias is observed but for losses up to 5 dB. In both cases, the standard deviation of the estimation is smaller than 0.2 dB.

中文翻译：

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基于接收器的光网络功率损耗实验估计

我们提出了一种估计意外功率损耗幅度的方法，该方法利用校准实现对网络链路的实时监控。它基于现有的光纤纵向功率分布评估技术。通过实验评估该方法的可靠性。当异常位于距跨距起点 0 km 处时，对于高达 10 dB 的损耗，估计偏差小于 0.2 dB。当异常位于距跨距起点 25 公里处时，观察到相同的估计偏差，但损失高达 5 dB。在这两种情况下，估计的标准偏差都小于 0.2 dB。