The Proposition of a Dual-Sensitivity Laminated Multimetal Dielectric Stacks Detecting Structure Based on the Reflected Goos–Hänchen Effect

Future advancements in integration technologies will significantly benefit from the creation and innovation of passive nonreciprocal detecting devices. The present work proposes a novel passive multiwaveguide stacking (MWS) detecting structure, which enjoys a prominent passive nonreciprocal property. By introducing envelope contents asymmetrically, the resonant modes of the forward and backward incident electromagnetic waves (EWs) could be differentiated in the near-infrared band, accompanied by an enhanced reflected Goos–Hänchen (GH) effect. Because of the asymmetry of the laminar structure and the metal layers, the local address of the photon energy at the resonance of the forward and backward incidence could be significantly misaligned, along with distinct sensitivities toward the alternation of the designated layer under passive conditions. Furthermore, to satisfy the demands of a growing area of sensing through the transfer matrix method and the stationary phase method, the performance of the detector in terms of refractive index (RI) is also discussed. This work aims to enlighten the design of a nonreciprocal GH detecting device for multiple physical scenarios under nonreciprocal effect and provide some fresh concepts for creating new passive integrated devices.