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

• Published in: Sensors (Basel, Switzerland) Vol. 24; no. 21; p. 6779
• Main Authors: Liu, Yifan, Li, Yujian, Xu, Pin, Yu, Changyuan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 22.10.2024; MDPI
• Subjects: Equipment and supplies; Fiber optics; Lasers; lateral pressure; Light; PMF; Sagnac loop; Sensors; temperature; TFBG; TFBG; PMF; Sagnac loop; temperature; lateral pressure

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...