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Proceedings Paper

Multiplexed optical loss based fiber optic sensor for displacement measurement
Author(s): Il-Bum Kwon; Jung-Ae Yu; Chi-Yeop Kim; Dae-Cheol Seo; Seung Kwan Kim; Jae-Heung Jo
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Paper Abstract

Continuous monitoring of soil movements is important to maintain civil structures. Fiber optic sensors can give the sensing solution for continuous displacement monitoring because they can be multiplexed with various sensors on one line of optical fiber, have the durability to harsh environments, and also are not affected by electro-magnetic effects. In this study, we work on the development of a multiplexed optical loss based fiber optic sensor for measuring displacements using the signal difference between the two reflected signals from a pair of optical connectors with various bending losses between them through an optical time domain reflectometer. We fabricate a multiplexed optical loss based fiber-optic sensor detecting linear displacements of 5 measuring positions of an object by setting these new 5 fiber-optic sensor probes on a single mode fiber simultaneously. We find that these sensors have a good capability to measure the displacements.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624251
Show Author Affiliations
Il-Bum Kwon, Korea Research Institute of Standards and Science (South Korea)
Jung-Ae Yu, Hannam Univ. (South Korea)
Chi-Yeop Kim, Korea Research Institute of Standards and Science (South Korea)
Dae-Cheol Seo, Korea Research Institute of Standards and Science (South Korea)
Seung Kwan Kim, Korea Research Institute of Standards and Science (South Korea)
Jae-Heung Jo, Hannam Univ. (South Korea)


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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