Abstract
We proposed a multi-parameter fiber sensing system. The macro-bending loss of cascaded single-mode-no-core-single-mode (SNS) fiber was used for displacement sensing, and the combination of the SNS and fiber loop mirror (FLM) was constructed to improve the dynamic range of measurement. We designed the single-mode-dispersion-compensation-single-mode (SDS) fiber edge filter for fiber bragg grating (FBG) demodulation. The steep linear transmission region of the edge filter was used to improve the sensitivity of FBG for measurement of temperature and strain. The two measurement methods were applied the multi-parameter fiber sensing system to realize simultaneous measurement of displacement, temperature and strain. The system can overcome the crosstalk between displacement and temperature.
Published Version
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