Heterogeneous space-division multiplexing and joint wavelength switching demonstration. - Nicolas K. Fontaine; T. Haramaty; Roland Ryf; Haoshuo Chen; L. Miron; Leonid Pascar; Miri Blau; Boris Frenkel; L. Wang; Younès Messaddeq; Sophie LaRochelle; René-Jean Essiambre; et al. (OFC, 2015)