Flexible resource provisioning of polarization independent coherent PONs based on non-orthogonal multiple access and multiCAP modulation. - David Izquierdo; Jose A. Altabas; Miguel Barrio; Jesús Clemente; Pablo Millan; Samael Sarmiento; José A. Lázaro; Simon Rommel; Rafael Puerta; Juan Jose Vegas Olmos; Idelfonso Tafur Monroy; Ignacio Garcés (JOCN, 2021)