This research proposes a novel design approach, including introducing a perforation inside the Tamm plasmon structure on the optical fiber tip. First, the proposed structure’s reflection spectrum and an assessment of its sensitivity to variations in the refractive index of the surrounding environment were investigated. Subsequently, an examination was conducted to assess the impact of other structural characteristics on the sensor’s sensitivity. The simulation results demonstrated that the structure exhibits suitable sensitivity to the refractive index of the surrounding environment.
