de Sousa Leal Adeilson, de Paiva Isa Cristina Gonçalves, Dos Passos Rodrigues Eloise, Pereira Helder Alves
Electrical Engineering Department, Center of Electrical Engineering and Informatics, Federal University of Campina Grande, Campina Grande, Paraíba, Brazil.
Brazilian Hospital Services Company, Federal University of Sergipe, Lagarto, Sergipe, Brazil.
Sci Rep. 2025 Apr 28;15(1):14816. doi: 10.1038/s41598-025-98099-5.
The lossy mode resonance (LMR) effect is generated by coupling between an evanescent wave from an optical waveguide and a lossy mode guided in the thin film. This effect presents a response to the variations in the refractive index of the surrounding medium similar to that obtained through the surface plasmon resonance effect. The sensors based on LMR effect have large number of applications on detection of physical, chemical and biological parameters. Faced with such a large number of applications and their relevance, especially in the health area, it is necessary to use computational platforms to assist in the analysis and the design of these sensors based on LMR effect. Thereby, these simulation tools are used to design the sensor structure and to reduce operating costs, since that the instruments and materials used are expensive and require care in instrumental handling. In this paper, we propose an open-source simulator to assist in the study, analysis and design of optical sensors based on LMR effect (Sim-LMR). Sim-LMR has a friendly graphical interface to simulate optical sensors considering structures based on prism for optical coupling in angular interrogation mode and wavelength interrogation mode. The results obtained by Sim-LMR were validated based on scenarios available in the literature, considering the characteristics of the reflectance curve and comparing its results with data obtained from the literature and a commercial software.
损耗模式共振(LMR)效应是由光波导中的倏逝波与薄膜中引导的损耗模式之间的耦合产生的。这种效应呈现出对周围介质折射率变化的响应,类似于通过表面等离子体共振效应获得的响应。基于LMR效应的传感器在物理、化学和生物参数检测方面有大量应用。面对如此众多的应用及其相关性,特别是在健康领域,有必要使用计算平台来辅助基于LMR效应的这些传感器的分析和设计。因此,这些模拟工具用于设计传感器结构并降低运营成本,因为所使用的仪器和材料昂贵且在仪器操作上需要小心谨慎。在本文中,我们提出了一种开源模拟器,以辅助基于LMR效应的光学传感器(Sim-LMR)的研究、分析和设计。Sim-LMR具有友好的图形界面,可在角度询问模式和波长询问模式下,针对基于棱镜进行光学耦合的结构来模拟光学传感器。基于文献中可用的场景,考虑反射率曲线的特征,并将其结果与从文献和商业软件获得的数据进行比较,对Sim-LMR获得的结果进行了验证。