The Bloch surface wave(BSW)has the properties of low transmission loss,significant local field enhancement at the surface as well as sensitive to the environment,which has been regarded as one of the key solutions for the study of near field light-matter interaction.BSW mainly propagates along the truncated one-dimensional photonic crystal and the external medium,the manipulation of BSW can be re-alized at the nanometer scale via the micro-nano structural design of the propagation interface.Here,em-barking from the optical properties of BSW mode,a graphene loaded one-dimensional photonic crystal BSW sensor structure is proposed.The existence of the excited mode in the band-gap can be determined by tuning the structural parameters of the graphene layer.Through investigating the optical field trans-mission characteristics of the excited mode,the manipulation of the excited wavelength,intensity as well as phase of the sustained BSW mode can be achieved.Moreover,leveraging its sensitivity to the refractive index change of the external medium,the sensing detection capability of this proposed structure is dis-cussed.The results demonstrate that the proposed sensor structure is expected to achieve highly sensitive biochemical sensing detection applications.The study provides a new route for the design and develop-ment of new BSW integrated photonic devices.
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