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8 March 2004 Civil engineering transducer's interrogation unit
Cesar Jauregui, Antonio Quintela, Olga Maria Conde, Adolfo Cobo, Jose Miguel Lopez-Higuera
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Proceedings Volume 5272, Industrial and Highway Sensors Technology; (2004) https://doi.org/10.1117/12.517212
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States
Abstract
A new interrogation scheme for civil engineering transducers is presented. Although it was developed in the first place for Fiber Bragg Grating based transducers, it has also demonstrated a good performance when interrogating other type of sensors such as those based on Low Finesse Fabry-Pérot Cavities. The proposed unit is able to extract the required information from the transducers by measuring the characteristics of the near field radiation created in the surroundings of a tilted fiber Bragg grating. This working principle makes it very attractive and suitable for civil engineering structural monitoring. Among the technical characteristics of the scheme, the following should be highlighted: inherent capability for extracting information of wavelength multiplexed FBG-based transducers, very wide wavelength operation range, and good wavelength resolution.
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Cesar Jauregui, Antonio Quintela, Olga Maria Conde, Adolfo Cobo, and Jose Miguel Lopez-Higuera "Civil engineering transducer's interrogation unit", Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); https://doi.org/10.1117/12.517212
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KEYWORDS
Civil engineering
Transducers
Fiber Bragg gratings
Multiplexing
Near field
Sensors
Structural monitoring
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