Polarization and Nonlinear Impairments in Fiber Communication Systems

Joint equalization of fast RSOP and large PMD based on RD-EKF for PDM-MQAM system

“…PDM employs two orthogonal states of polarization for information transmission, thereby enhancing transmission capacity. Nevertheless, the adoption of PDM renders the system more susceptible to various distortions, including but not limited to polarization mode dispersion (PMD) and rotation of the state of polarization (RSOP) 2 . Some extreme environments, such as lightning strikes, which will cause optical fiber composite overhead ground wire to produce high-speed polarization rotation.…”

“…Nevertheless, the adoption of PDM renders the system more susceptible to various distortions, including but not limited to polarization mode dispersion (PMD) and rotation of the state of polarization (RSOP). 2 Some extreme environments, such as lightning strikes, which will cause optical fiber composite overhead ground wire to produce high-speed polarization rotation. Even at distances spanning hundreds of kilometers from the lightning event, the manifestation of high-speed polarization rotation is observed, a phenomenon attributed to the Kerr effect and Faraday effect, as reported in previous research.…”