The Technology

Our innovative geotechnical monitoring products are based on distributed fiber optic sensors. We mainly use BOTDA (Brillouin Optical Time Domain Analysis), BOTDR (Brillouin Optical Time Domain Reflectometry), and BEDS (Brillouin Echo Distributed Sensing) technology. Besides, we also use Fiber Bragg Gratings (FBG) sensors for our monitoring solutions.

Please feel free to consult our scientific contributions on selected topics for further details. The best lead-in provides the paper in the "Geotechnical Instrumentation News (GIN)", starting from page 29.

Iten, M. (2011). "Novel applications of distributed fiber-optic sensing in geotechnical engineering". PhD Thesis Nr. 19632, ETH Zurich, Switzerland.
Download here

Hauswirth, D., Iten, M. and Puzrin, A. M. (2011). "Experimental study of a soil-embedded fibre optic strain sensor crossing a shear zone". 5th International Conference on Structural Health Monitoring on Intelligent Infrastructure (SHMII-5), 2011, Cancun.

Iten, M., Puzrin, A. M. & Hauswirth, D. (2011). "Distributed fiber optic sensor development, testing and evaluation for geotechnical monitoring applications.". Smart Sensor Phenomena, Technology, Networks, and Systems 2011, San Diego, USA.

Puzrin, A. M., Iten, M. & Hauswirth, D. (2010). "Advanced Geotechnical Applications of Distributed Fiber-Optic Sensing". Geotechnical Instrumentation News, no. 64, December 2010, pp. 29-32.

Iten M. and Puzrin A.M. (2010). "Monitoring of stress distribution along a ground anchor using BOTDA". Proc. of SPIE, Vol. 7647, SSNDE Conference, San Diego, USA.

Schmid A., Puzrin A., Iten M., Schwager M. and Hauswirth D. (2009). "Road - Landslide Interaction: Monitoring and Inverse Stability Analysis". Final Report 1270, Research Project VSS 2005/502, Bundesamt für Strassen ASTRA, Switzerland.

Iten M., Puzrin A.M., Hauswirth D., Foaleng-Mafang S., Beugnot J.C. and Thévenaz L. (2009). "Study of a progressive failure in soil using BEDS". Proc. of SPIE, Vol. 7503, 20th International Conference on Optical Fibre Sensors, Edinburgh, UK.

Iten M., Ravet F., Niklès M., Facchini M., Hertig T., Hauswirth D. and Puzrin A. M. (2009). "Soil-embedded fiber optic strain sensors for detection of differential soil displacements". In Proc. of SHMII-4, Zurich, Switzerland.

Schwager, M. V., Schmid, A. M., Puzrin, A. M. (2009). "Inclinodeformometer: a novel device for measuring earth pressure in creeping landslides". submitted paper for the International Symposium on Prediction and Simulation Methodes for Geohazard Mitigation, IS Kyoto 09, May 25-27 2009, Kyoto, Japan.

Iten M., Schmid A., Hauswirth D. and Puzrin A. M. (2009). "Defining and monitoring of landslide boundaries using fiber optic systems". Int. Symp. on Prediction and Simulation Methods for Geohazard Mitigation, Kyoto, Japan.

Iten M. and Puzrin A.M. (2009). "BOTDA road-embedded strain sensing system for landslide boundary localization". Proc. of SPIE, Vol. 7293, SSNDE Conference, San Diego, USA.

Puzrin, A. M., Messerklinger, S., Schmid, A. (2008). "The in-situ stiffness of the sliding layer in a creeping landslide". Proceedings of the 4th International Symposium on Deformation Characteristics of Geomaterials, IS Atlanta 2008, September 22-24 2008, Atlanta, Georgia, USA, Vol. 1.

Iten M. and Puzrin A.M. (2008). "Landslide monitoring using a road-embedded optical fiber sensor". Proc. of SPIE, Vol. 6933, SSNDE Conference, San Diego, USA.

Puzrin, A. and Schmid, A. (2007). "TRIVEC Measurements in the Inverse Analysis of the Long-Term Stability of a Constrained Landslide". Proceedings of the 7th International Symposium on Field Measurements in Geomechanics Boston, FMGM 07, Massachusetts, USA.