Novel multimode fiber sensor by applying torsional angle tuning

Weigang Zhang; Xiaoyi Dong; Zhigang Wu; Guang Zhou; Jian Zeng; Shuzhong Yuan; Guiyun Kai; Qida Zhao

doi:10.1117/12.482014

9 September 2002 Novel multimode fiber sensor by applying torsional angle tuning

Weigang Zhang, Xiaoyi Dong, Zhigang Wu, Guang Zhou, Jian Zeng, Shuzhong Yuan, Guiyun Kai, Qida Zhao

Proceedings Volume 4920, Advanced Sensor Systems and Applications; (2002) https://doi.org/10.1117/12.482014
Event: Photonics Asia, 2002, Shanghai, China

Abstract

The linear fiber sensor of torsional angle with biderectional tuning has been designed and realized by using multi-mode fiber and torsion beam. The optical power loss of the multi-mode fiber is linear to the torsional angle of the torsion beam under the torsional strain is not large. In the range between -40 and +40 , we obtained that the sensitivity of the torsional angle is 0.376dB/degree for positive torsion and —0.374dB/degree for negative torsion, respectively. The experimental results are good agreement with the theoretical analyses.

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Weigang Zhang, Xiaoyi Dong, Zhigang Wu, Guang Zhou, Jian Zeng, Shuzhong Yuan, Guiyun Kai, and Qida Zhao "Novel multimode fiber sensor by applying torsional angle tuning", Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); https://doi.org/10.1117/12.482014

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KEYWORDS

Sensors

Multimode fibers

Fiber optics sensors

Cladding

Optical power meters

Semiconductor lasers

Solids

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