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Proceedings Paper

Study of Fiber Bragg grating sensor system based on OFDR/WDM
Author(s): Fei Wu; Yanan Cai; Lulu Cai; Lijuan Huang; Zhiquan Li
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Paper Abstract

A novel interrogating fiber grating array based on optical frequency domain reflectometry (OFDR) and wavelength division multiplexing (WDM) techniques was reported, and address inquiry of different measurement optical fiber was realized. Fundamental principle of OFDR has been analyzed and the space resolution and measurement range of this system were calculated theoretically. The calculated system's spatial resolution was 2.5m, and measurement range was 2000m. Thanks to the minimum resolution within meter range, frequency fluctuation due to trivial vibration in the environment won't cause error in the course of interrogating. Experiment studies on 3×3 fiber grating array were carried out. Experimental results confirm that with sufficiently large power of the light source, the novel fiber grating sensing array has attractive potential to interrogate and modulate several hundreds of fiber gratings in that it makes full use of optical frequency and wavelength information, and can be well applied to the distributed stress detection of two- or three- dimensional large structures

Paper Details

Date Published: 19 May 2006
PDF: 5 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615022 (19 May 2006); doi: 10.1117/12.676421
Show Author Affiliations
Fei Wu, Yanshan Univ. (China)
Yanan Cai, Yanshan Univ. (China)
Lulu Cai, Yanshan Univ. (China)
Lijuan Huang, Yanshan Univ. (China)
Zhiquan Li, Yanshan Univ. (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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