Real-time fast polarization tracking based on polarization phase locking least mean square algorithm | Zendy

Jie Li | Zendy; Tao Zeng | Zendy; Xiang Li | Zendy; Lingheng Meng | Zendy; Ming Luo | Zendy; Zhixue He | Zendy; Shaohua Yu | Zendy

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Real-time fast polarization tracking based on polarization phase locking least mean square algorithm

Author(s) -

Jie Li,

Tao Zeng,

Xiang Li,

Lingheng Meng,

Ming Luo,

Zhixue He,

Shaohua Yu

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.022116

Subject(s) - polarization mode dispersion , computer science , optics , polarization division multiplexing , algorithm , least mean squares filter , phase shift keying , digital signal processing , polarization (electrochemistry) , offset (computer science) , frequency offset , signal processing , bit error rate , physics , adaptive filter , telecommunications , orthogonal frequency division multiplexing , optical fiber , computer hardware , chemistry , decoding methods , channel (broadcasting) , programming language

We propose a fast polarization tracking scheme based on polarization phase locking least mean square (LMS) algorithm and experimentally demonstrate it in real-time implementation with a quasi-feed-forward digital signal processing (DSP) architecture. It has the advantages of no frequency/phase offset feedback requirement from the carrier recovery stage. The tracking performance of the proposed algorithm is verified in both simulation and real-time coherent transmission systems. It can track the state of polarization (SOP) variations up to 12 Mrad/s and 3.3 Mrad/s in 100-Gb/s QPSK and 400-Gb/s 16QAM simulation system, and can track 2.5 Mrad/s in 10-Gb/s QPSK real-time experiment, which has great improvement over conventional LMS algorithm.

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