A high sensitivity optical fiber Surface Plasmon Resonance (SPR) sensor which based on
coreless optical fiber, silver film and graphene, has been designed and implemented for
liquid concentration detection. In this paper, Graphene is firstly verified that it can be used to
enhance the evanescent field of traditional optical fiber and thus increasing sensitivity in
experiment. The sensitivity of proposed sensor is 6.417 nm/%, which is higher than that of
the traditional optical fiber SPR sensor according to the comparative experiments. In …