Performance analysis of the Fiber Bragg grating Interrogation system based on an arrayed waveguide grating

P. Niewczas, A. J. Willshire, L. Dziuda, J. R. McDonald
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引用次数: 11

Abstract

In this paper we analyze performance of the Fiber Bragg Grating (FBG) Interrogation System based on an Arrayed Waveguide Grating (AWG) device. The spectrum of light reflected from the FBG sensor is analyzed using an AWG which acts as a coarse spectrometer. Using measurement points from the AWG channels, the original spectrum of the sensing element is reconstructed by a means of curve fitting. The measurement system is modeled in LabView environment, which allows to modify the FBG and AWG parameters and to simulate the measurement process. This, in turn, allows quantifying the measurement errors resulting from the nonlinearity of the particular FBG/AWG configuration, and allows optimizing the system design for the particular measurement errors permitted. In addition to the simulations of the proposed measurement system, we provide details of the laboratory evaluation.
基于阵列波导光栅的光纤光栅讯问系统性能分析
本文分析了基于阵列波导光栅(AWG)器件的光纤布拉格光栅(FBG)讯问系统的性能。利用AWG作为粗谱仪对光纤光栅传感器反射的光谱进行分析。利用AWG通道的测量点,通过曲线拟合的方法重构了传感元件的原始光谱。该测量系统在LabView环境中建模,允许修改FBG和AWG参数,并对测量过程进行仿真。这反过来又允许量化由特定FBG/AWG配置的非线性引起的测量误差,并允许针对允许的特定测量误差优化系统设计。除了所提出的测量系统的模拟,我们提供了实验室评估的细节。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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