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Proceedings Paper

An optical torsion fiber sensor with simultaneous direction and angle measurement
Author(s): Wu Yulin; Yixin Zha; Guosheng Zhang; Zixiang Zhuang; Jian Wang; Chenchen Yin; Zhigang Cao; Benli Yu
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Paper Abstract

Based on the principle of Solc interferometer, an optical fiber sensor which can realize torsional direction and torsion angle measurement simultaneously is proposed in this paper. The sensor is consisted of a segment of single mode fiber (SMF), polarization maintaining fiber (PMF) and two polarizers. When the light of the broad band source is transmitted in the sensor, the interference spectra can be observed at the output of the sensor. The interference spectra of the sensor can be changed when the sensor is twisted clockwise or counter-clockwise. Because the peaks position and dips position in interference spectra are reversed when clockwise and counter-clockwise torsions are applied, the torsional direction can be judged conveniently. With the increase of the torsion angle, the extinction ratio (ER) of interference spectra will change significantly. By measuring the changes of the ER, torsion angle can be calculated easily. The highest sensitivity can reach to 0.79dB/° in the range of [-50,52°].

Paper Details

Date Published: 23 October 2018
PDF: 6 pages
Proc. SPIE 10821, Advanced Sensor Systems and Applications VIII, 108211E (23 October 2018); doi: 10.1117/12.2500655
Show Author Affiliations
Wu Yulin, Anhui Univ. (China)
Yixin Zha, Anhui Univ. (China)
Guosheng Zhang, Anhui Univ. (China)
Zixiang Zhuang, Anhui Univ. (China)
Jian Wang, Anhui Univ. (China)
Chenchen Yin, Anhui Univ. (China)
Zhigang Cao, Anhui Univ. (China)
Benli Yu, Anhui Univ. (China)

Published in SPIE Proceedings Vol. 10821:
Advanced Sensor Systems and Applications VIII
Tiegen Liu; Shibin Jiang, Editor(s)

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