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Proceedings Paper

Twin-core fiber white light interferometric bending sensor
Author(s): Jun Yang; Libo Yuan; Xiaoliang Zu; Yu Zhang; Binbin Liu; Jianzhong Zhang; Qiang Dai; Fengjun Tian
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Paper Abstract

A fiber optic bending sensing system that uses twin-core fiber as the sensing element has been proposed and demonstrated. The twin-core fiber act as a two-beam interferometer in which phase differences is a function of the curvature, and it can be demodulated by the shift of the unique identification spectrum. By way of FFT analysis of the white light interferometric spectrum, the variation of bending can be measured. The relationship between the bending curvature and the shift of the unique identification spectrum has been given and the experimental results were also confirmed this.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70040Y (16 May 2008); doi: 10.1117/12.785426
Show Author Affiliations
Jun Yang, Harbin Engineering Univ. (China)
Libo Yuan, Harbin Engineering Univ. (China)
Xiaoliang Zu, Harbin Engineering Univ. (China)
Yu Zhang, Harbin Engineering Univ. (China)
Binbin Liu, Harbin Engineering Univ. (China)
Jianzhong Zhang, Harbin Engineering Univ. (China)
Qiang Dai, Harbin Engineering Univ. (China)
Fengjun Tian, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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