Twin-core fiber white light interferometric bending sensor

Jun Yang; Libo Yuan; Xiaoliang Zu; Yu Zhang; Binbin Liu; Jianzhong Zhang; Qiang Dai; Fengjun Tian

doi:10.1117/12.785426

16 May 2008 Twin-core fiber white light interferometric bending sensor

Jun Yang, Libo Yuan, Xiaoliang Zu, Yu Zhang, Binbin Liu, Jianzhong Zhang, Qiang Dai, Fengjun Tian

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70040Y (2008) https://doi.org/10.1117/12.785426
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

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.

Citation Download Citation

Jun Yang, Libo Yuan, Xiaoliang Zu, Yu Zhang, Binbin Liu, Jianzhong Zhang, Qiang Dai, and Fengjun Tian "Twin-core fiber white light interferometric bending sensor", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70040Y (16 May 2008); https://doi.org/10.1117/12.785426

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