A novel perovskite hybrid surface plasmon waveguide structure is designed. Its physical model is established, and its theoretical basis is introduced in detail. Based on the finite element method, the mode characteristics, quality factor, and gain threshold of the waveguide structure are analyzed with geometric parameters. The results show that the optical field constraint of the waveguide can reach a good deep sub-wavelength level under the optimal operating wavelength of 1550 nm. By adjusting the waveguide design parameters, the high-quality factor, low energy loss, low threshold limit, and ultra-small effective mode field area are obtained. Compared with the hybrid waveguide structure proposed in the current research results, this structure has stronger optical field limiting ability and microcavity binding ability. The waveguide structure can provide theoretical and technical support for the development of new efficient nanolaser devices and has a good application prospect.

设计了一种新颖的钙钛矿杂化表面等离子体激元波导结构。建立了其物理模型，并详细介绍了其理论基础。基于有限元方法，利用几何参数分析了波导结构的模式特性，品质因数和增益阈值。结果表明，在最佳工作波长1550 nm下，波导的光场约束可以达到良好的深亚波长水平。通过调整波导设计参数，可以获得高质量因子，低能量损耗，低阈值极限和超小有效模式场面积。与当前研究结果提出的混合波导结构相比，该结构具有更强的光场限制能力和微腔结合能力。