2D materials coated on etched optical fibers as humidity sensor.

In this investigation, etched-fibers are coated by 2D layers such as Molybdenum disulfide (MoS), Molybdenum diselenide (MoSe) and composition of graphene and graphene oxide (G/GO) to modify humidity sensing. The relative differentiation of attenuations (RDA) in presence of relative humidity (RH) is measured by Optical Loss Test Set at two standard-wavelengths-telecommunication (1310 nm and 1550 nm). Results show that the etched single-mode fiber (ESMF) coated with G/GO has relatively high and one by one function for RDA versus RH (more than 30%).