Cascaded directional coupler-based polarization splitter/combiner on commercial silicon photonics integration platform - Spanidou, Kalliopi; Orbe Nava, Luis Jorge; Gonzalez Guerrero, Luis; Hermann, Dan; Carpintero Del Barrio, Guillermo (Integrated Optics: Devices, Materials, and Technologies XXVII (SPIE OPTO 2023), 2023)