RT Conference Proceedings T1 Polarization independent 2×2 multimode interference coupler with bricked subwavelength metamaterial A1 Pérez-Armenta, Carlos A1 Ortega-Moñux, Alejandro A1 Luque-González, José Manuel A1 Halir, Robert A1 Reyes Iglesias, Pedro José A1 Schmid, Jens H. A1 Cheben, Pavel A1 Molina-Fernández, Íñigo A1 Wanguemert-Pérez, Juan Gonzalo K1 Telecomunicaciones - Equipos y material K1 Circuitos integrados AB The silicon-on-insulator (SOI) platform enables high integration density in photonic integrated circuits while maintaining compatibility with CMOS fabrication processes. Nevertheless, its inherently high modal birefringence hinders the development of polarization-insensitive devices. The dispersion and anisotropy engineering leveraging subwavelength grating (SWG) metamaterials makes possible the development of polarization agnostic waveguide components. In this work we build upon the bricked SWG metamaterial nanostructures to design a polarization independent 2×2 multimode interference (MMI) coupler for the 220 nm SOI platform, operating in the telecom O-band. The designed device exhibits a 160 nm bandwidth with excess loss, polarization dependent loss and imbalance below 1 dB and phase error lower than 5°. YR 2022 FD 2022 LK https://hdl.handle.net/10630/25380 UL https://hdl.handle.net/10630/25380 LA eng NO Ministerio de Economía y Competitividad (PID2019-106747RB-I00), Junta de Andalucía (P18-RT-1453, UMA20-FEDERJA-158), Ministerio de Ciencia Innovación y Universidades (FPU16/06762, FPU19/02408) and Universidad de Málaga, Campus de Excelencia Internacional Andalucía Tech. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026