Optical fibers are well suited for deployment in boreholes as they can tolerate harsh environments, i.e. high pressures and temperatures, or strongly corrosive media, and are immune to electromagnetic interference.

The following devices are available for fiber-optic field and laboratory experiments: distributed temperature sensing (DTS), distributed dynamic strain sensing (DDSS), distributed strain sensing, interrogator for fiber-optic point-sensing (FBG, Fabry-Perot), devices for fibre characterisation and additional equipment.