An Optical Fiber Sensor for Axial Strain, Curvature, and Temperature Measurement Based on Single-Core Six-Hole Optical Fiber

In this paper, the field distribution and effective refractive index of transmission modes in single-core six-hole optical fiber were researched by modeling and simulation experiments. Based on the simulation results, a new type of sensor for axial strain, curvature, and temperature applications mea...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2022-02, Vol.22 (4), p.1666
Main Authors: Li, Yujian, Yu, Changyuan, Lu, Ping
Format: Article
Language:English
Subjects:
Axial strain
Curvature
Design
Equipment and supplies
Experiments
Fiber optics
Light
Monitoring systems
Optical fibers
Refractivity
Sensors
Simulation
simultaneous measurement
single-core six-hole optical fiber
strain
temperature
Temperature measurement
Temperature measurements
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Summary:In this paper, the field distribution and effective refractive index of transmission modes in single-core six-hole optical fiber were researched by modeling and simulation experiments. Based on the simulation results, a new type of sensor for axial strain, curvature, and temperature applications measurement was designed and fabricated. The experimental results showed that the axial strain sensitivities at different dips were -0.97 pm/με and -1.05 pm/με in the range from 0 to 2000 με, and the temperature sensitivities were 35.17 pm/°C and 47.27 pm/°C in the range from 25 to 75 °C. In addition, the proposed sensor also detected the curvature change with sensitivities of 7.36 dB/m and 20.08 dB/m from -2.582 m to -1.826 m , respectively. Finally, through theoretical analysis, it can be deduced that this has potential application in the field of simultaneous measurement of strain and temperature.
ISSN:1424-8220
1424-8220
DOI:10.3390/s22041666