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Proceedings Paper

B-OTDR and OFDR distributed optical fiber strain sensing for sinkhole detection
Author(s): Sylvie Delepine-Lesoille; Vincent Lanticq; Pierre Magnien; Luc Dieleman; Gratien Vinceslas; Emmanuel Bourgeois
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Paper Abstract

Optical fiber sensor is evaluated for sinkhole detection under railway tunnels. Tests performed on a decametric structure equipped with embedded 110 m-cable interrogated by Brillouin-OTDR and OFDR showed great performances in accordance with finite-element calculations.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044N (16 May 2008); doi: 10.1117/12.786125
Show Author Affiliations
Sylvie Delepine-Lesoille, Lab. Central des Ponts et Chaussées (France)
Vincent Lanticq, Lab. Central des Ponts et Chaussées (France)
Pierre Magnien, Société Nationale des Chemins de fer Français (France)
Luc Dieleman, Société Nationale des Chemins de fer Français (France)
Gratien Vinceslas, Ctr. d’Etudes Techniques de l’Equipement-Normandie Ctr. (France)
Emmanuel Bourgeois, Lab. Central des Ponts et Chaussées (France)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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