RT Conference Proceedings T1 Metamaterial engineered C+L band 90º hybrid with 150 nm feature size A1 Hadij-El-Houati, Abdelfettah A1 Halir, Robert A1 Ortega-Moñux, Alejandro A1 Wanguemert-Pérez, Juan Gonzalo A1 Podmore, Hugh A1 Schmid, Jens H. A1 Cheben, Pavel A1 Molina-Fernández, Íñigo K1 Metamateriales K1 Silicio sobre aislante AB 90º hybrids are important components for coherent optical communications. Conventionalimplementations only cover the C band, while broadband, metamaterial-based devices require sub-100nm feature sizes.We propose a design based on dual-etch silicon subwavelength structures that achieves a 170 nm bandwidth with deep-UVcompatible feature sizes. YR 2020 FD 2020-09-28 LK https://hdl.handle.net/10630/20512 UL https://hdl.handle.net/10630/20512 LA eng NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.Ministerio de Universidades (FPU-16/03401)Ministerio de Economía y Competitividad FEDER (TEC2016-80718-R)Programa Operativo FEDER Andalucía 2014-2020 (UMA18-FEDERJA-219) DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 3 mar 2026