title: Fast polarization-state tracking scheme based on radius-directed linear Kalman filter.
abstract: We propose and experimentally demonstrate a fast polarization tracking scheme based on radius-directed linear Kalman filter. It has the advantages of fast convergence and is inherently insensitive to phase noise and frequency offset effects. The scheme is experimentally compared to conventional polarization tracking methods on the polarization rotation angular frequency. The results show that better tracking capability with more than one order of magnitude improvement is obtained in the cases of polarization multiplexed QPSK and 16QAM signals. The influences of the filter tuning parameters on tracking performance are also investigated in detail.
authors.forename: Yanfu
authors.initials: Y
authors.lastname: Yang
authors.forename: Guoliang
authors.initials: G
authors.lastname: Cao
authors.forename: Kangping
authors.initials: K
authors.lastname: Zhong
authors.forename: Xian
authors.initials: X
authors.lastname: Zhou
authors.forename: Yong
authors.initials: Y
authors.lastname: Yao
authors.forename: Alan Pak Tao
authors.initials: AP
authors.lastname: Lau
authors.forename: Chao
authors.initials: C
authors.lastname: Lu