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Proceedings Paper

Two-loop based low-coherence multiplexing fiber optic sensors network with Michelson optical path demodulator
Author(s): Libo Yuan; Jun Yang
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Paper Abstract

A two-loop based low-coherence multiplexing fiber optic sensors network has been proposed and demonstrated. It is greatly extended the multiplexing capacity of this kind sensor. A practical implementation of theses schemes is configured by use of a popular ASE light source and standard single mode fiber, which are commonly used in communication industry. The sensors two-loop topology is completely passive. The absolute length measurements can be obtained for each sensing fiber segments so that it can be used to measure quasi-distribution strain or temperature. For the large-scale smart structures, this technique not only extends the multiplexing potential, but also provides a redundancy for the sensing system. It is mean that the two-loop sensors network permits one point or two points breakdown, because the sensing system will still work whenever the embedded two-looped sensors has been destroyed in somewhere. The robustness of the 9-sensor two-loop sensing network are investigated and discussed.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623252
Show Author Affiliations
Libo Yuan, Harbin Engineering Univ. (China)
Jun Yang, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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