Multiple mechanical sensing based on cascaded S-tapered multimode fiber and grapefruit hole fiber structure

Multiple mechanical sensing based on cascaded S-tapered multimode fiber and grapefruit hole fiber structure

This paper presents a new composite structure for highly sensitive measurement of mechanical properties, consisting of an S-shaped tapered multimode fiber and a grapefruit core six-air hole fiber. The structure utilizes the integrated Michelson interference vernier effect based on the multi-beam sup...

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Bibliographic Details
Published in:IEEE sensors journal Vol. 23; no. 20; p. 1
Main Authors: Han, Xiaopeng, Hasiwuliji, Zhang, Huanyu, Guo, Ying, Zhang, Yundong
Format: Journal Article
Language:English
Published: New York IEEE 15-10-2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Composite structures
Crosstalk
curvature
Fiber optic mechanical sensing
Grapefruit
Intelligent manufacturing systems
Mechanical properties
Position measurement
s-taper
Sensitivity
Superposition (mathematics)
Tensile strain
tension strain
Thermal insulation
vernier effect
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Summary:This paper presents a new composite structure for highly sensitive measurement of mechanical properties, consisting of an S-shaped tapered multimode fiber and a grapefruit core six-air hole fiber. The structure utilizes the integrated Michelson interference vernier effect based on the multi-beam superposition principle (VMI-STM-SCF). The structure's superior performance in tensile strain sensing is demonstrated through control group experiments, and a coating process utilizing thermal insulation silicone is implemented to increase tensile strain sensitivity and reduce temperature-induced crosstalk. The strain sensitivity can reach up to 12. 8pm/με, exhibiting a high stability level. Additionally, a vector curvature sensing test is conducted, and a novel resolution method is proposed to precisely measure the absolute position of the bending sensor in the plane. The structure's small size, lightweight, and rapid response make it advantageous for medical devices and intelligent, flexible wearable sensing technologies. The research and practical utilization of such sensors is expected to drive advancements in relevant fields and foster the development of intelligent manufacturing.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2023.3307593