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23 May 2005 Multiplexed optical loss based fiber optic sensor for displacement measurement
Il-Bum Kwon, Jung-Ae Yu, Chi-Yeop Kim, Dae-Cheol Seo, Seung Kwan Kim, Jae-Heung Jo
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Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624251
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium
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.
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Citation Download Citation
Il-Bum Kwon, Jung-Ae Yu, Chi-Yeop Kim, Dae-Cheol Seo, Seung Kwan Kim, and Jae-Heung Jo "Multiplexed optical loss based fiber optic sensor for displacement measurement", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624251
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KEYWORDS
Sensors
Fiber optics sensors
Multiplexing
Head
Mirrors
Optical fibers
Signal attenuation
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