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首页> 外文期刊>Applied Optics >Development of a parallel demodulation system used for extrinsic Fabry-Perot interferometer and fiber Bragg grating sensors
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Development of a parallel demodulation system used for extrinsic Fabry-Perot interferometer and fiber Bragg grating sensors

机译:开发用于外部法布里-珀罗干涉仪和光纤布拉格光栅传感器的并行解调系统

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摘要

A parallel demodulation system for extrinsic Fabry-Perot interferometer (EFPI) and fiber Bragg grating (FBG) sensors is presented, which is based on a Michelson interferometer and combines the methods of low-coherence interference and a Fourier-transform spectrum. The parallel demodulation theory is modeled with Fourier-transform spectrum technology, and a signal separation method with an EFPI and FBG is proposed. The design of an optical path difference scanning and sampling method without a reference light is described. Experiments show that the parallel demodulation system has good spectrum demodulation and low-coherence interference demodulation performance. It can realize simultaneous strain and temperature measurements while keeping the whole system configuration less complex.
机译:提出了一种用于外在法布里-珀罗干涉仪(EFPI)和光纤布拉格光栅(FBG)传感器的并行解调系统,该系统基于迈克尔逊干涉仪,并结合了低相干干扰和傅立叶变换频谱的方法。利用傅立叶变换频谱技术对并行解调理论进行了建模,提出了一种基于EFPI和FBG的信号分离方法。描述了没有参考光的光程差扫描和采样方法的设计。实验表明,该并行解调系统具有良好的频谱解调和低相干干扰解调性能。它可以同时进行应变和温度测量,同时保持整个系统配置的复杂性。

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