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14 February 2019 Theoretical research on torsion measurement by FBG and its simulation verification
Shanchao Jiang, Ping Lin, Yongming Chen, Changbin Tian
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Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110483G (2019) https://doi.org/10.1117/12.2518288
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China
Abstract
Decomposing the tangential force which impacts on the fiber into radial forces and utilizing optical fiber line force model, one novel temperature insensitivity fiber Bragg grating (FBG) torsion measurement model is proposed in this paper. Basic principle of this torsion measurement model is that center wavelength shift of FBG is analyzed to obtain the torsion angler of optical fiber. In order to get the angle of torsion per unit length resolution of this measurement model, simulation experiment is carried out. Results of the simulation experiment show that torsion angle resolution of this measurement model changes from -1.76·10-3 rad to 2.36·10-2 rad with detection range ±0.5rad. The demand of the torsion measurement model is just one embedded FBG which decreased the torsion detection expense greatly.
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Shanchao Jiang, Ping Lin, Yongming Chen, and Changbin Tian "Theoretical research on torsion measurement by FBG and its simulation verification", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110483G (14 February 2019); https://doi.org/10.1117/12.2518288
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KEYWORDS
Fiber Bragg gratings
Sensors
Optical fibers
Optical testing
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