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Curvature sensing using an added-signal in a fiber-optic cavity ring-down system

Title
Curvature sensing using an added-signal in a fiber-optic cavity ring-down system
Type
Article in International Conference Proceedings Book
Year
2015
Authors
Susana Silva
(Author)
FCUP
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Biswas, P
(Author)
Other
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Bandyopadhyay, S
(Author)
Other
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Jorge, PAS
(Author)
FCUP
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marques, mb
(Author)
FCUP
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Frazao, O
(Author)
FCUP
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Conference proceedings International
24th International Conference on Optical Fibre Sensors (OFS)
Curitiba, BRAZIL, SEP 28-OCT 02, 2015
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Other information
Authenticus ID: P-00G-TPF
Abstract (EN): This work presents a fiber-optic Cavity Ring-Down (CRD) configuration using an added-signal for curvature sensing. An Optical Time-Domain Reflectometer (OTDR) was used to send impulses down into the fiber loop cavity, inside of which a long period grating (LPG) was placed to act as sensing device. The added-signal was obtained by the sum of several conventional CRD impulses, thus providing an improvement on the curvature sensitivity when compared to the conventional CRD signal processing. Sensitivity to applied curvature of 15.3 mu s/m(-1) was obtained. This result was found to be 20-fold the one obtained for the conventional CRD signal processing.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 4
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Related Publications

Of the same authors

Fiber-Optic Cavity Ring Down Using an Added-Signal for Curvature Sensing (2015)
Article in International Scientific Journal
Susana Silva; Biswas, P; Bandyopadhyay, S; Jorge, PAS; marques, mb; Frazao, O
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