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Proceedings Paper

A novel interrogation technique for time-division multiplexing fiber Bragg grating sensor arrays
Author(s): Shengchun Liu; Youlong Yu; Jintao Zhang; Sun Fei
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Paper Abstract

A novel interrogation method with multi-switches channels for time-division multiplexing Fiber Bragg Grating (FBG) sensor system is introduced. An electric switches array controlled by a complex programmable logic device (CPLD) is used in this scheme to monitoring simultaneously each sensor of the FBG array according to the different transmition times of each sensor grating. In this paper, More than 10 FBG sensors are interrogated and demodulated simultaneously base on unbalanced Michelson interferometer. The sensing sensitivity of this system is 1.658 Deg per micro-strain, experimentally. The interrogation frequency of the system could reach 1 KHz.

Paper Details

Date Published: 21 November 2007
PDF: 5 pages
Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67812M (21 November 2007); doi: 10.1117/12.745990
Show Author Affiliations
Shengchun Liu, Heilongjiang Univ. (China)
Youlong Yu, Heilongjiang Univ. (China)
Heifei Univ. of Technology and Engineering (China)
Jintao Zhang, Heilongjiang Univ. (China)
Sun Fei, Heilongjiang Univ. (China)

Published in SPIE Proceedings Vol. 6781:
Passive Components and Fiber-based Devices IV
Ming-Jun Li; Jianping Chen; Satoki Kawanishi; Ian H. White, Editor(s)

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