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Proceedings Paper

A novel strain sensor based on a pair of fiber Bragg grating comb filters
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Paper Abstract

A pair of fiber Bragg grating (FBG) comb filters with different channel-spacings are designed and fabricated to measure strain. The reflection peaks of one comb filter shift when the strain changes. And the other comb filter is used as calibration standard. The two comb filters have different channel-spacings, 1.00 nm and 0.95 nm, which can be regard as the structure of vernier caliper. In our experiment, the strain resolution is about 41.7 με, with low demand of the demodulation devices. And it could be greatly improved further in terms of Gaussian fitting technology of the peaks' intensity.

Paper Details

Date Published: 11 November 2008
PDF: 7 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71340T (11 November 2008); doi: 10.1117/12.804067
Show Author Affiliations
Feifei Yin, Tsinghua Univ. (China)
Ye Zhang, Tsinghua Univ. (China)
Shizhong Xie, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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