Optical Fiber Relative Humidity Sensor Based on a FBG with a Di-Ureasil Coating
AbstractIn this work we proposed a relative humidity (RH) sensor based on a Bragg grating written in an optical fiber, associated with a coating of organo-silica hybrid material prepared by the sol-gel method. The organo-silica-based coating has a strong adhesion to the optical fiber and its expansion is reversibly affected by the change in the RH values (15.0–95.0%) of the surrounding environment, allowing an increased sensitivity (22.2 pm/%RH) and durability due to the presence of a siliceous-based inorganic component. The developed sensor was tested in a real structure health monitoring essay, in which the RH inside two concrete blocks with different porosity values was measured over 1 year. The results demonstrated the potential of the proposed optical sensor in the monitoring of civil engineering structures.
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Correia, S.F.H.; Antunes, P.; Pecoraro, E.; Lima, P.P.; Varum, H.; Carlos, L.D.; Ferreira, R.A.S.; André, P.S. Optical Fiber Relative Humidity Sensor Based on a FBG with a Di-Ureasil Coating. Sensors 2012, 12, 8847-8860.
Correia SFH, Antunes P, Pecoraro E, Lima PP, Varum H, Carlos LD, Ferreira RAS, André PS. Optical Fiber Relative Humidity Sensor Based on a FBG with a Di-Ureasil Coating. Sensors. 2012; 12(7):8847-8860.Chicago/Turabian Style
Correia, Sandra F. H.; Antunes, Paulo; Pecoraro, Edison; Lima, Patrícia P.; Varum, Humberto; Carlos, Luis D.; Ferreira, Rute A. S.; André, Paulo S. 2012. "Optical Fiber Relative Humidity Sensor Based on a FBG with a Di-Ureasil Coating." Sensors 12, no. 7: 8847-8860.