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April 19, 2026SensorsOpen Access

A New Type of High-Sensitivity Fiber Grating Pressure Sensor

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Authors

WLWei-Chen LiWLW F Liu

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Overview

Demonstrates improved pressure sensing performance using a novel fiber Bragg grating sensor in harsh environments, suggesting enhanced measurement capabilities.

Key Points

  • To develop a high-sensitivity fiber Bragg grating pressure sensor that minimizes spectral distortion and enhances stability.
  • Proposed an X-shaped mechanical transducer for axial strain conversion.
  • Developed a theoretical model correlating force, pressure, and grating wavelength shift.
  • Optimized sensor parameters by varying EPDM thickness, bonding materials, and contact area.
  • Achieved sensitivities of 0.291 nm/N, 0.409 nm/N, and 0.462 nm/N in the force range of 0–10 N.
  • Demonstrated high sensitivity of 0.596 nm/kPa for underwater pressure within 0–6 kPa.
  • Exhibited high sensitivity, good linearity, and excellent repeatability in measurements.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69e472d8010ef96374d8ed14https://doi.org/10.3390/s26082490
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