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Proceedings Paper

The theory of fiber grating array OFDR-FS
Author(s): FanYong Meng; Zhigang Li; Bin Yang; Susan Dong; Zhuanyun Guo
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Paper Abstract

A demodulation method for a quasi-distributed sensor based on an original interrogating system for concatenated low reflective Fiber Grating is proposed. The system is based on Optical Frequency Domain Reflectometer technology for which a commercial device has been extended to a wavelength-tunable device. This interrogation system has the advantage of allowing a large number of gratings to be addressed simultaneously. In our application, except of the first grating (it has 20 times higher reflective than others) all other gratings have low reflective (about 0.5% and 1 nm bandwidth at 3 dB) and have a Fiber Bragg Grating central wavelength of about 1535 nm. Compare to conventional Optical Frequency Domain Reflectometer technology, this interrogating system has very fast measurement capability and higher precision.

Paper Details

Date Published: 12 August 2009
PDF: 9 pages
Proc. SPIE 7458, Remote Sensing System Engineering II, 74580L (12 August 2009); doi: 10.1117/12.824477
Show Author Affiliations
FanYong Meng, Hebei Univ. of Technology (China)
Zhigang Li, Hebei Univ. of Technology (China)
Bin Yang, Hebei Univ. of Technology (China)
Susan Dong, AT Photonics, Inc. (United States)
Zhuanyun Guo, AT Photonics, Inc. (United States)

Published in SPIE Proceedings Vol. 7458:
Remote Sensing System Engineering II
Philip E. Ardanuy; Jeffery J. Puschell, Editor(s)

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