1 August 1991 Measurement of small strain of a solid body by two-frequency laser optical fiber sensor
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Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50041
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China
Abstract
Conclusions were obtained for polarization maintaining fiber (PMF) in which the two-frequency laser optical fiber sensor was used. In the case of longitudinal strain (epsilon) -3, the optical phase change per unit fiber elongation, $TOP(phi) /$TOPl is a constant, independent of the total length of fiber which is drawn, and the change in modal birefringence of the fiber, $TOPB, is linearly proportional to (epsilon) . By using these conclusions, very small strain and Young's modulus can be measured. The result of Young's modulus experiment shows that it is successful to measure small strain or small displacement by means of measurement of the strain of the optical fiber itself.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yin Fang, Yin Fang, Kemin Sheng, Kemin Sheng, } "Measurement of small strain of a solid body by two-frequency laser optical fiber sensor", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50041; https://doi.org/10.1117/12.50041
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