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Proceedings Paper

A temperature self-adapting FBG vibrating sensor system
Author(s): Jin-Yu Wang; Dian-Heng Huo; Jun Chang; Xiao-Hui Liu; Jie Liu; Liang-Zhu Ma; Tong-Yu Liu; Chang Wang
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Paper Abstract

A temperature adaptive fiber Bragg grating (FBG) vibration sensor system of low frequency based on narrow line width distributed feedback (DFB) laser is investigated. By automatic controlling the temperature of the DFB laser, the wavelength of the DFB laser can be locked in -3dB reflectivity spectrum of FBG. So the system can realise the self adaptation of the temperature changes. Using the reference channel, the measurement precision of the system was improved by wiping off the power noise of the DFB laser. Experiments show that this sensor has the smallest acceleration of 1mm/s2 and the sensitivity of 6.2V/m/s2.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750343 (5 October 2009); doi: 10.1117/12.835053
Show Author Affiliations
Jin-Yu Wang, Shandong Academy of Sciences (China)
Dian-Heng Huo, Shandong Micro-Sensor Photonics, Ltd. (China)
Jun Chang, Shandong Academy of Sciences (China)
Xiao-Hui Liu, Shandong Academy of Sciences (China)
Jie Liu, Shandong Academy of Sciences (China)
Liang-Zhu Ma, Shandong Micro-Sensor Photonics, Ltd. (China)
Tong-Yu Liu, Shandong Micro-Sensor Photonics, Ltd. (China)
Chang Wang, Shandong Academy of Sciences (China)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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