Dual-Polarization Direct Detection with Jones Space Field Recovery

Optical field recovery not only increases the optical modulation dimensions but also enables digital compensation for fiber impairments such as chromatic dispersion. In this paper, we propose the first optical full-field recovery receiver in Jones space to achieve polarization and phase diversity for the direct detection system. 448 Gb/s dual-polarization 16QAM signal is successfully recovered after 80-km SMF transmission with 7.15-b/s/Hz net electrical spectral efficiency.