Colorless devices and reception techniques for polarization multiplexed communications. - Robert Halir; Pedro J. Reyes-Iglesias; Carlos Alonso-Ramos; Dario Sarmiento-Merenguel; J. Gonzalo Wangüemert-Pérez; Pavel Cheben; Íñigo Molina-Fernández; Alejandro Ortega-Moñux (ICTON, 2015)