Analysis of mechanical properties of multimode fiber optic sensors

Huanhuan Lu; Jun Zhang; Song Fang; Yongliang Li; Danping Wang; Caiyan He; Jianhui Yu; Wenguo Zhu; Zhe Chen

doi:10.1117/12.2523002

14 February 2019 Analysis of mechanical properties of multimode fiber optic sensors

Huanhuan Lu, Jun Zhang, Song Fang, Yongliang Li, Danping Wang, Caiyan He, Jianhui Yu, Wenguo Zhu, Zhe Chen

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110484U (2019) https://doi.org/10.1117/12.2523002
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

In this paper, the feasibility of multimode fiber as pressure sensor is explore by using the straight structure of the fiber itself. The elastic mechanical model and the basic equation of the straight structure of the fiber is established. ANSYS software is used for the analysis of stress and strain distribution and the results show that the stress and strain of load section fiber are linearly related. In the experimental process, the straight structure fiber is used as the test unit and the change of the optical power is measured and analyzed during the pressure loading. The experimental results show that the linear correlation coefficient R² of the pressure loading process from 0g to 400g is 0.9117 for the multi-mode fiber; and the linear correlation coefficient R² of the pressure unloading process from 400g to 0g is 0.7061. So it can be concluded that the straight structure multimode fiber can be used as a pressure sensor.

Citation Download Citation

Huanhuan Lu, Jun Zhang, Song Fang, Yongliang Li, Danping Wang, Caiyan He, Jianhui Yu, Wenguo Zhu, and Zhe Chen "Analysis of mechanical properties of multimode fiber optic sensors", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110484U (14 February 2019); https://doi.org/10.1117/12.2523002

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KEYWORDS

Multimode fibers

Optical fibers

Sensors

Fiber optics sensors

Birefringence

Demodulation

Fiber Bragg gratings

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