Low-Cost and High-Performance Optical Fiber-Based Sensor for Liquid Level Monitoring

@article{Martins2019LowCostAH,
  title={Low-Cost and High-Performance Optical Fiber-Based Sensor for Liquid Level Monitoring},
  author={Joana Costa Martins and Camilo A. R. D{\'i}az and Maria de F{\'a}tima Domingues and Rute A. S. Ferreira and Paulo F. C. Antunes and Paulo S. B. Andr{\'e}},
  journal={IEEE Sensors Journal},
  year={2019},
  volume={19},
  pages={4882-4888}
}
Liquid level sensing is nowadays a relevant issue in a broad range of applications, forcing the sensors performance and cost to be evaluated in parallel. This paper proposes a fiber optic-based liquid level sensor system using a fiber Fabry-Pérot interferometer (FPI) embedded into a polyurethane resin diaphragm. The FPI is based on microcavities generated upon catastrophic fuse effect, enabling the fiber recycling and sensors fabrication in a cost-effective way, compared to traditional methods… 

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