RT Journal Article T1 A systemic model for lossy mode resonances (LMRs) A1 Imas-González, José Javier A1 Villar-Fernández, Ignacio del A1 Wanguemert-Pérez, Juan Gonzalo A1 Matías-Maestro, Ignacio Raúl A1 Molina-Fernández, Íñigo K1 Telecomunicaciones AB Lossy mode resonances (LMRs) have been widely employed for the development of sensors in the last years. However, the theoretical frameworks for LMRs are scarce and difficult to systematize, hampering the development of this technology. In this work, we propose a new systemic model for assessing LMRs in arbitrary waveguide configurations, based solely on modal analysis of the unperturbed waveguide and the waveguide with a thin film optimized for LMR generation. The model is first developed for a generic waveguide, and leveraged to design, for the first time, LMRs in a silicon nitride photonic wire waveguide. It is furthermore demonstrated that the model only requires a few modes to reliably describe LMRs in D-shaped fibers, reducing the computational cost of simulating them. Therefore, the suggested model is valid for both high and low contrast waveguides, and it is considered it provides new insights about LMRs, which will help in the design of new LMR-based devices and its extension to novel platforms. PB Elsevier YR 2024 FD 2024 LK https://hdl.handle.net/10630/35086 UL https://hdl.handle.net/10630/35086 LA eng NO J.J. Imas, Ignacio Del Villar, Robert Halir, J. Gonzalo Wangüemert-Pérez, Alejandro Ortega-Moñux, Ignacio R. Matías, Íñigo Molina-Fernández, A systemic model for lossy mode resonances (LMRs), Optics & Laser Technology, Volume 182, Part A, 2025, 112070, ISSN 0030-3992, https://doi.org/10.1016/j.optlastec.2024.112070. NO Funding for open access charge: Universidad de Málaga / CBUA .This work was supported by Agencia Estatal de Investigación (grant JDC2022-048216-I, project PDC2023-145831-I00, and project TED2021-130400B-I00/AEI/10.13039/501100011033/European Union NextGeneration EU/PRTR). DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026