DocumentCode :
3541261
Title :
Fiber optic bending loss sensor for application on monitoring of embankment dams
Author :
Ribeiro, Livia A. ; Rosolem, Joao B. ; Dini, Danilo C. ; Floridia, Claudio ; Hortencio, Claudio A. ; Costa, Eduardo F da ; Bezerra, Edson W. ; De Oliveira, Rinaldo B. ; Loichate, Marcelo D. ; Durelli, Anderson S.
Author_Institution :
CPqD - R&D Center in Telecommun., Campinas, Brazil
fYear :
2011
fDate :
Oct. 29 2011-Nov. 1 2011
Firstpage :
637
Lastpage :
641
Abstract :
We propose a fiber optic sensor system based on fiber bending loss and Optical Time Domain Reflectometry (OTDR) to application on monitoring of embankment dams. The sensing system was developed to monitor indirectly the water level penetration on the embankment dam by measuring the water pressure. The bend loss sensor performance was assessed concerning the number of fiber loops involved, the pump wavelength and temporal width of the pulse. Sensor system link is proposed to have a number of at least six sensors stages totally independent each other, in such a way that each stage can be developed to monitor a specific situation. In order to protect the sensor stage against environmental damage and to match the mechanical properties of the fiber and the water, we proposed a special packaging based on silicone rubber.
Keywords :
bending; dams; electronics packaging; fibre optic sensors; monitoring; optical fibre losses; optical pumping; optical time-domain reflectometry; pressure measurement; silicone rubber; embankment dam monitoring; environmental damage; fiber loops; fiber optic bending loss sensor; mechanical properties; optical time domain reflectometry; pump wavelength; sensor packaging; sensor system link; silicone rubber; temporal pulsewidth; water level penetration; water pressure measurement; Monitoring; Optical fiber losses; Optical fiber sensors; Optical reflection; Bending Sensor; Embankment Dams; Fiber Optic Sensor; OTDR; Pressure Sensor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International
Conference_Location :
Natal
ISSN :
Pending
Print_ISBN :
978-1-4577-1662-1
Type :
conf
DOI :
10.1109/IMOC.2011.6169273
Filename :
6169273
Link To Document :
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