Independent and mixed transmission of 166.5 Gb/s PM-8QAM and 222 Gb/s PM-16QAM Nyquist-wavelength division multiplexed superchannel for long-haul metro network. - Shikha Sachan; Divya Sharma; Yogendra Kumar Prajapati; Rajeev Tripathi (Int. J. Commun. Syst., 2021)