Schenato L., Marcato G., Ahlstedt M., Dwivedi S., Janse Van Vuuren D., Pasuto A., 2015, Crack Monitoring in a Road Tunnel by Plastic Optical Fibre Sensing, 2015 Fotonica AEIT Italian Conference on Photonics Technologies, pp. 1–4, Turin, 6-8 May 2015,
URL: http://www.cnr.it/prodotto/i/334836

In this work, a low cost optical fibre sensing system for concrete cracks assessment inside a road tunnel is presented. A plastic optical fibre, with large dynamic strain range is used for sensing cracks. The system exploits a commercially available interrogator capable of estimating integral deformation of the cable via a phase measurement of a RF modulated optical signal.

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