Abstract

We propose, to the best of our knowledge, a new configuration of a biosensor based on the graphene-${\mathrm{MoS}}_2$ hybrid structure by adopting the lower refractive index ${\mathrm{MgF}}_2$ prism in order to improve the sensitivity and the figure of merit (FOM). We can obtain an ultrasensitive sensor with values of sensitivity and FOM as high as 540.8°/RIU and 145/RIU, respectively, by modulating the parameters in the configuration and comparatively choosing a different absentee layer material. The proposed structure is applicable in the realization of an integrated device for the surface plasmon resonance biosensor.

© 2018 Optical Society of America

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