DIFFER Seminar: Fiber (and other) Sensors

Abstract: Fiber sensors allow for sensing combined with signal transmission over longer distances (kms)and sensing in (harsh) environments. I will present our work on sensors based on fiber Bragg gratings (FBGs) for aquafers where we monitor soil consolidation and expansion and more recently develop sensors for salt intrusion. For the latter we improve the sensitivity of the FBG system by creating series of FBGs that create Vernier/Moire interference. I will also briefly touch upon our contact-free dielectric sensing for conductivity analysis.