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A fiber Bragg grating based passive semicircular sensor architecture with fault monitoring

机译：具有故障监测的基于光纤布拉格光栅的无源半圆传感器架构

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摘要

In the investigation, we investigate a fiber Bragg grating (FBG) based semicircular sensor architecture with fiber fault monitoring experimentally. Two erbium-doped fiber amplifiers (EDFAs) are used in the monitoring center to generate a broadband light source for sensing the strain and temperature simultaneously. Here, we utilize six FBG based sensors with different reflected wavelength for proof-of-concept demonstration. There is no optical filter used in the FBG sensor system for wavelength-selection. In addition, the proposed sensor system can monitor one to two fiber faults. In the measurement, the temperature-and strain-induced changes are also analyzed and discussed. Therefore, the proposed multiple FBG based semicircular sensor system not only can sense the temperature and strain simultaneously, but also can be used to monitor where is the fiber fault.
机译：在调查中，我们研究了基于光纤布拉格光栅（FBG）的半圆形传感器架构，并通过光纤故障监控进行了实验。监视中心使用两个掺光纤放大器（EDFA）生成宽带光源，以同时感测应变和温度。在这里，我们利用六个具有不同反射波长的基于FBG的传感器进行概念验证演示。 FBG传感器系统中没有用于波长选择的光学滤波器。另外，所提出的传感器系统可以监视一到两个光纤故障。在测量中，还对温度和应变引起的变化进行了分析和讨论。因此，所提出的基于多个FBG的半圆形传感器系统不仅可以同时感测温度和应变，而且可以用于监测光纤故障在哪里。

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