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Micromachines 2016, 7(8), 129; doi:10.3390/mi7080129

Application of Robust, Packaged Long-Period Fiber Grating for Strain Measurement

Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan
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Academic Editors: Teen-Hang Meen, Shoou-Jinn Chang, Stephen D. Prior and Artde Donald KinTak Lam
Received: 1 June 2016 / Revised: 11 July 2016 / Accepted: 19 July 2016 / Published: 26 July 2016
View Full-Text   |   Download PDF [5963 KB, uploaded 26 July 2016]   |  

Abstract

This paper proposes an optical fiber strain sensor based on packaged long-period fiber gratings (PLPFG) which is fabricated by the micro-electromechanical systems (MEMS) process and packaged with poly-dimethylsiloxane (PDMS) polymer materials. The optical fiber sensor packaged with PDMS improves robustness effectively. The proposed PLPFG sensors have periods of 610, 650, 660 μm and fiber diameter of 48, 60, 72 μm, respectively. The resonance dip of the PLPFG grows when a strain loaded onto the sensor. The results show that the largest strain sensitivity of the PLPFG strain sensor was −0.0652 dB/με from 0–1200 με and the linearity (R2) was 0.9812. Accordingly, the proposed PLPFG sensor has good potential for high-sensitivity strain sensing applications. View Full-Text
Keywords: optical fiber sensor; long-period fiber grating; strain sensor optical fiber sensor; long-period fiber grating; strain sensor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ma, K.-P.; Wu, C.-W.; Hsieh, T.-S.; Hsieh, M.-Y.; Chiang, C.-C. Application of Robust, Packaged Long-Period Fiber Grating for Strain Measurement. Micromachines 2016, 7, 129.

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