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Dynamic strain measurement using an extrinsic Fabry-Perot interferometric sensor and an arrayed waveguide grating device 总被引:1,自引:0,他引:1
Willshire A.J. Niewczas P. Dziuda L. Fusiek G. McDonald J.R. 《IEEE transactions on instrumentation and measurement》2004,53(1):4-9
In this paper, we demonstrate an interrogation system, based on an arrayed waveguide grating, capable of monitoring dynamic strain in a cantilever beam at frequencies up to 5 kHz (limited by the actuator) with a similar precision to resistive strain gauges. 相似文献
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Niewczas P. Dziuda L. Fusiek G. Willshire A.J. McDonald J.R. Thursby G. Harvey D. Michie W.C. 《IEEE transactions on instrumentation and measurement》2003,52(4):1092-1096
In this paper, we present details of a solid state interrogation system based on a 16-channel arrayed waveguide grating (AWG) for interrogation of extrinsic Fabry-Perot interferometric sensors. The sensing element is configured in a reflecting mode and is illuminated by a broad-band light source through an optical fiber. The spectrum of light reflected from the sensor is analyzed using an AWG device acting 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. This allows sufficient information for the position of the reflection peak (or inverted peak) to be uniquely determined and the value of a measurement quantity obtained. In addition to the theoretical simulations of the proposed measurement system, we provide details of the laboratory evaluation. 相似文献
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Fusiek G. Niewczas P. Willshire A.J. McDonald J.R. 《IEEE transactions on instrumentation and measurement》2008,57(11):2528-2531
In this paper, we report on nonlinearity compensation for a solid-state fiber bragg grating (FBG) sensor interrogation system based on an arrayed waveguide grating (AWG) device. A lookup table with calibration data is used to improve system linearity. A reduction in the absolute value of the measurement error from 120 mustrain or 15degC to 4.8 mustrain or 0.6degC, respectively, is experimentally demonstrated. 相似文献
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