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Chin. Opt. Lett.
 Home  List of Issues    Issue 03 , Vol. 17 , 2019    10.3788/COL201917.030603


Polarization de-multiplexing using a modified Kalman filter in CO-OFDM transmissions
Yang Jiang1, Xingwen Yi1;2, Shaohua Hu1, Xiatao Huang1, Wei Tang1, Wenjing Zhou1, Xinning Huang3, Jing Zhang1, and Kun Qiu1
1 Key Laboratory of Optical Fiber Sensing and Communications, [University of Electronic Science and Technology of China], Chengdu 611731 , China
2 School of Electronics and Information Technology, [Sun Yat-sen University], Guangzhou 510275, China
3 [Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences], Xi’an 710075, China

Chin. Opt. Lett., 2019, 17(03): pp.030603

DOI:10.3788/COL201917.030603
Topic:Fiber optics and optical communication
Keywords(OCIS Code): 060.2330  060.1660  

Abstract
We propose the modified Kalman filter (MKF) using the received signal for observation and constructing an inverse process of the conventional Kalman filter (CKF) for polarization de-multiplexing in coherent optical (CO) orthogonal frequency-division multiplexing (OFDM) transmissions. The MKF can avoid the convergence error problem in CKF without matrix inverse operation and has a faster converging speed and a much larger tolerance to the process and measurement noise covariance, about two orders of magnitude more than those of CKF. We experimentally demonstrate the 12 Gbaud OFDM signal transmission over 480 km standard single-mode fiber. The performance of MKF and CKF outperforms pilot-aided polarization de-multiplexing with better accuracy and nonlinearity tolerance.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2018/8/10
Accepted:2018/12/27
Posted online:2019/3/1

Get Citation: Yang Jiang, Xingwen Yi, Shaohua Hu, Xiatao Huang, Wei Tang, Wenjing Zhou, Xinning Huang, Jing Zhang, and Kun Qiu, "Polarization de-multiplexing using a modified Kalman filter in CO-OFDM transmissions," Chin. Opt. Lett. 17(03), 030603(2019)

Note: This work was supported by the National Natural Science Foundation of China (NSFC) (Nos. 61420106011, 61871408, and 61871082).



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