TY - JOUR
T1 - High-temperature-resistant strain sensor based on the asymmetric tapered Fabry-Pérot fiber
AU - SONG, Xinping
AU - LV, Jingwei
AU - WANG, Jianxin
AU - LIU, Wei
AU - WANG, Famei
AU - WANG, Weiqiang
AU - Yi, Zao
AU - LIU, Miao
AU - LIU, Qiang
AU - CHU, Paul K.
AU - LIU, Chao
PY - 2025/7/1
Y1 - 2025/7/1
N2 - A high-temperature-resistant strain sensor based on an asymmetric tapered Fabry–Pérot fiber (FPI) structure is designed and validated experimentally. The strain sensor is constructed by fusing two standard single-mode optical fibers to form a microbubble and applying a taper on one side of the microbubble to form the asymmetric tapered structure. The strain characteristics of the sensor in the temperature range from room temperature to 425°C are determined. A good linear relationship is observed between the wavelength displacement and tensile strain in this temperature range. The strain sensitivity is 47.69 pm/µε at 25°C, and the linear response is reproducible in the range of 0–300 µε. In addition, the wavelength displacement due to the applied strain is stable with respect to each 100°C increase in the temperature, indicating that the FPI sensor has good temperature stability in the strain range between 0 and 300 µε. The average temperature sensitivity is 1.56 pm/°C in the temperature range between 25°C and 425°C, and the cross-sensitivity is very low. Our results show that the FPI sensor has strong resistance to high temperatures, boding well for applications such as aerospace components, metal processing, and gas boilers. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved. p
AB - A high-temperature-resistant strain sensor based on an asymmetric tapered Fabry–Pérot fiber (FPI) structure is designed and validated experimentally. The strain sensor is constructed by fusing two standard single-mode optical fibers to form a microbubble and applying a taper on one side of the microbubble to form the asymmetric tapered structure. The strain characteristics of the sensor in the temperature range from room temperature to 425°C are determined. A good linear relationship is observed between the wavelength displacement and tensile strain in this temperature range. The strain sensitivity is 47.69 pm/µε at 25°C, and the linear response is reproducible in the range of 0–300 µε. In addition, the wavelength displacement due to the applied strain is stable with respect to each 100°C increase in the temperature, indicating that the FPI sensor has good temperature stability in the strain range between 0 and 300 µε. The average temperature sensitivity is 1.56 pm/°C in the temperature range between 25°C and 425°C, and the cross-sensitivity is very low. Our results show that the FPI sensor has strong resistance to high temperatures, boding well for applications such as aerospace components, metal processing, and gas boilers. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved. p
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:001523178300003
UR - http://www.scopus.com/inward/record.url?scp=105013210383&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-105013210383&origin=recordpage
U2 - 10.1364/JOSAA.559487
DO - 10.1364/JOSAA.559487
M3 - RGC 21 - Publication in refereed journal
SN - 1084-7529
VL - 42
SP - 1031
EP - 1038
JO - Journal of the Optical Society of America A: Optics and Image Science, and Vision
JF - Journal of the Optical Society of America A: Optics and Image Science, and Vision
IS - 7
ER -