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Proceedings Paper

Intensity-modulated optical fiber sensor for static strain and vibration monitoring
Author(s): Na Li; Jingke Li; Chuanyi Tao; Junhua Cheng; Xuhai Jiang; Jing Zhang; Liming Mao; Jianjun Xiao; Yan Zhao
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Paper Abstract

An intensity-modulated optical fiber sensor is presented for static strain and vibration monitoring, which is fabricated by splicing a small section thin-core fiber between two standard single-mode fibers. Static strain measurement is performed using a simple cantilever system and a referenced fiber Bragg grating for sensing strain. The results show that optical loss increases with the rising strain for TCF sensor and the maximum optical loss is 0.133 dB. The dynamic response measurement of the cantilever vibration is demonstrated. The experimentally measured vibration frequency range is from 1 Hz to 200 Hz. The developed thin-core fiber sensor has the advantage of no complex demodulation, cost efficient and simple in structure, which is a potential monitoring method for large-scale construction, mechanical equipment, aerospace, and even earth activities.

Paper Details

Date Published: 20 November 2019
PDF: 7 pages
Proc. SPIE 11191, Advanced Sensor Systems and Applications IX, 111910T (20 November 2019); doi: 10.1117/12.2536427
Show Author Affiliations
Na Li, Chongqing Univ. of Technology (China)
Jingke Li, Chongqing Medical and Pharmaceutical College (China)
Chuanyi Tao, Chongqing Univ. of Technology (China)
Junhua Cheng, Chongqing Univ. of Technology (China)
Xuhai Jiang, Chongqing Univ. of Technology (China)
Jing Zhang, Chongqing Univ. of Technology (China)
Liming Mao, Chongqing Univ. of Technology (China)
Jianjun Xiao, Chongqing Univ. of Technology (China)
Yan Zhao, Chongqing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 11191:
Advanced Sensor Systems and Applications IX
Tiegen Liu; Gang-Ding Peng; Zuyuan He, Editor(s)

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