Two structures of graphene-silver asymmetric grating surface plasmon resonance sensors with high sensitivity were presented. In Structure 1, the air, with a thickness of 100 nm, was located on the sensing medium; while, Structure 2 has become small with ignoring the air. The sensitivity of both sensors was calculated through the alteration of the wavelength peak of the extinction curve in minor variability of refractive index of the sensing medium. The sensitivity of Structure 1 and Structure 2 was 880 nm/RIU and 1742 nm/RIU, respectively. By comparing the different sensors, it should be noted that the ability to reach a small-sized sensor with a high performance (Structure 2) is the center of researchers' attention. Also, these two SPR sensors could detect most gases with a refractive index from 1.000 to 1.500 such as CO₂, CS₂, SO₂, and so on, with high precision.

提出了两种结构的高灵敏度石墨烯-银非对称光栅表面等离子体共振传感器。在结构1中，厚度为100nm的空气位于传感介质上；同时，结构2 变得很小，忽略了空气。通过在传感介质的折射率的微小变化中消光曲线的波长峰值的变化来计算两个传感器的灵敏度。结构 1和结构 2的灵敏度分别为 880 nm/RIU 和 1742 nm/RIU。通过比较不同的传感器，应该注意的是，能够达到高性能的小型传感器（结构 2) 是研究人员关注的中心。此外，这两个 SPR 传感器可以高精度检测大多数折射率在 1.000 到 1.500 之间的气体，例如 CO ₂、CS ₂、SO ₂等。