2026-06-01T06:03:48Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/253802026-02-03T12:21:22Zcom_10630_2254col_10630_37959

Pérez-Armenta, Carlos Ortega-Moñux, Alejandro Luque-González, José Manuel Halir, Robert Reyes Iglesias, Pedro José Schmid, Jens H. Cheben, Pavel Molina-Fernández, Íñigo Wanguemert-Pérez, Juan Gonzalo 2022-11-09T13:11:19Z 2022-11-09T13:11:19Z 2022 https://hdl.handle.net/10630/25380 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°. eng open access Telecomunicaciones - Equipos y material Circuitos integrados Polarization independent 2×2 multimode interference coupler with bricked subwavelength metamaterial conference output