The steering of guided light in surface plasmon resonance (SPR) sensing platforms introduced more than eight decades ago from the first proposed optical sensor in 1983. However, sensing the environmental variation considering transverse modes is still require the attention from the scientist. Here, for the first time, by considering steering of guided light a high-performance SPR sensor base on Otto structure is proposed. By incorporating the graphene and white graphene in to a prism-waveguide configuration, we calculated the excitation of both TE(TM) modes as refractive index is changed from 1 to 1.04. to analysis of the structure finite-difference time-domain (FDTD) is applied. To benchmark of the structure performance parameters including sensitivity, figure of merit, polarization extinction ratio (PER), and insertion loss (IL) are calculated. Numerical results show that maximum sensitivity and figure of merit are obtained for TM modes of 1226 and 27 respectively. In such a case, graphene monolayer is applied. By considering coupling condition, at the μc = 0.4 eV, the maximum value of PER is 75 dB, and IL is 0.022 dB. Moreover, it is obtained that in all these conditions PER is higher than 8 dB, and IL is less than 0.04 dB.

表面等离子体共振 (SPR) 传感平台中的导光导向自 1983 年第一个提出的光学传感器在八十多年前引入。然而，考虑横向模式的环境变化仍然需要科学家的关注。在这里，首次通过考虑引导光的转向，提出了一种基于 Otto 结构的高性能 SPR 传感器。通过将石墨烯和白色石墨烯结合到棱镜波导配置中，我们计算了当折射率从 1 变为 1.04 时两种 TE(TM) 模式的激发。时域有限差分（FDTD）的结构分析。计算结构性能参数的基准，包括灵敏度、品质因数、极化消光比 (PER) 和插入损耗 (IL)。数值结果表明，分别为 1226 和 27 的 TM 模式获得了最大灵敏度和品质因数。在这种情况下，应用石墨烯单层。考虑耦合条件，在 μc = 0.4 eV 时，PER 最大值为 75 dB，IL 为 0.022 dB。此外，在所有这些条件下，PER 均高于 8 dB，IL 低于 0.04 dB。