New advances in Fabry-Perot cavity for sensing applications

An overview of optical fiber sensors based on Fabry-Perot interferometers with a focus on sensing applications applications. The next generation of these fiber types interferometers are based in photonic crystal fibers, microfabrication as well as by chemical etching of special structures. High temperature measurements with linear behavior are observed namely in pure silica fibers. New configurations are presented as possible solutions to be considered in extreme or special conditions.