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Proceedings Paper

Interrogation of miniature extrinsic Fabry-Pérot sensor using path matched differential interferometer and phase generated carrier scheme
Author(s): Fuyin Wang; Jiehui Xie; Zhengliang Hu; Shuidong Xiong; Hong Luo; Yongming Hu
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Paper Abstract

Study of fiber optic extrinsic Fabry-Pérot sensors utilizing state-of-the-art MEMS technology mostly focus on sensor fabrication for various applications, while the signal interrogation is still insatiable to current application. In this paper, we propose a white light path matched differential interferometer dynamic sensing system utilizing phase generated carrier demodulation scheme. A step motor with a movable mirror and a fiber-wound piezoelectric transducer string are used to act path matching and phase modulation respectively. Experimental results show that the sensing signal could be correctly recovered with low distortion and the phase noise spectrum level is less than -100 dB re. rad/√Hz above 2.5 kHz.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915718 (2 June 2014); doi: 10.1117/12.2059310
Show Author Affiliations
Fuyin Wang, National Univ. of Defense Technology (China)
Jiehui Xie, National Univ. of Defense Technology (China)
Zhengliang Hu, National Univ. of Defense Technology (China)
Shuidong Xiong, National Univ. of Defense Technology (China)
Hong Luo, National Univ. of Defense Technology (China)
Yongming Hu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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