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首页> 外文期刊>IEEE sensors journal >Interferogram Reconstruction of Cascaded Coaxial Cable Fabry-Perot Interferometers for Distributed Sensing Application
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Interferogram Reconstruction of Cascaded Coaxial Cable Fabry-Perot Interferometers for Distributed Sensing Application

机译：分布式传感应用级联同轴电缆法布里-珀罗干涉仪的干涉图重建

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摘要

This paper describes a distributed sensing concept using coaxial cable-based Fabry-Perot interferometers (CCFPIs). Multiple reflectors are implemented along a coaxial cable, where every two consecutive reflectors can be considered as a low finesse CCFPI, which has a relatively weak reflection coefficient and insertion loss. The interferogram in a frequency domain of each individual CCFPI could be reconstructed through the proposed signal processing method, so that the phase detection could be applied to any CCFPIs on one cable to achieve high measurement accuracy. A large capacity sensor network with a relatively high measurement accuracy can be implemented simultaneously. The concept takes advantage of the time-domain multiplexing method and the pure frequency domain measurement, which is herein called a joint-time-frequency demodulation technique. Due to its effectiveness and robustness, the device is especially attractive for structural, downhole, or underwater applications.
机译：本文介绍了基于同轴电缆的法布里-珀罗干涉仪（CCFPI）的分布式传感概念。沿着同轴电缆实现多个反射器，其中每两个连续的反射器可以被视为低精细CCFPI，它具有相对较弱的反射系数和插入损耗。可以通过提出的信号处理方法重建每个单独CCFPI的频域中的干涉图，从而可以将相位检测应用于一根电缆上的任何CCFPI，以实现高测量精度。可以同时实现具有较高测量精度的大容量传感器网络。该概念利用时域复用方法和纯频域测量的优点，在此将其称为联合时频解调技术。由于其有效性和坚固性，该设备特别适合结构，井下或水下应用。

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