Nonlinearity Compensation of the Fiber Bragg Grating Interrogation System Based on an Arrayed Waveguide Grating |
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| Authors: | Fusiek G Niewczas P Willshire AJ McDonald JR |
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| Affiliation: | Inst. for Energy & Environ., Univ. of Strathclyde, Glasgow; |
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| Abstract: | 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. |
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