Temperature and Lateral Pressure Sensing Using a Sagnac Sensor Based on Cascaded Tilted Grating and Polarization-Maintaining Fibers

This study introduces a Sagnac Interferometer (SI) fiber sensor that integrates Polarization-Maintaining Fibers (PMFs) with a Tilted Fiber Bragg Grating (TFBG) for the dual-parameter measurement of strain and lateral pressure. By incorporating a 6° TFBG with PMFs into the SI sensor, its sensitivity...

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Veröffentlicht in:Sensors (Basel, Switzerland) Switzerland), 2024-10, Vol.24 (21), p.6779
Hauptverfasser: Liu, Yifan, Li, Yujian, Xu, Pin, Yu, Changyuan
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Sprache:eng
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Zusammenfassung:This study introduces a Sagnac Interferometer (SI) fiber sensor that integrates Polarization-Maintaining Fibers (PMFs) with a Tilted Fiber Bragg Grating (TFBG) for the dual-parameter measurement of strain and lateral pressure. By incorporating a 6° TFBG with PMFs into the SI sensor, its sensitivity is significantly enhanced, enabling advanced multi-parameter sensing capabilities. The sensor demonstrates a temperature sensitivity of -1.413 nm/°C and a lateral pressure sensitivity of -4.264 dB/kPa, as validated by repeated experiments. The results exhibit excellent repeatability and high precision, underscoring the sensor's potential for robust and accurate multi-parameter sensing applications.
ISSN:1424-8220
1424-8220
DOI:10.3390/s24216779