- Kang-ping Zhong
Kang-ping Zhong
State Key Laboratory of All Optical Network & Advanced Telecommunication Network, Beijing Jiaotong University, Beijing, 100044, China;
Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
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Search for this author on this site - Tang-jun Li
Tang-jun Li
State Key Laboratory of All Optical Network & Advanced Telecommunication Network, Beijing Jiaotong University, Beijing, 100044, China;
Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
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Search for this author on this site - Nan Jia
Nan Jia
State Key Laboratory of All Optical Network & Advanced Telecommunication Network, Beijing Jiaotong University, Beijing, 100044, China;
Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
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Search for this author on this site - Jian Sun
Jian Sun
State Key Laboratory of All Optical Network & Advanced Telecommunication Network, Beijing Jiaotong University, Beijing, 100044, China;
Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
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Search for this author on this site - Mu-guang Wang
Mu-guang Wang
State Key Laboratory of All Optical Network & Advanced Telecommunication Network, Beijing Jiaotong University, Beijing, 100044, China;
Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
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An improved multiplier-free feed-forward carrier phase estimation algorithm is proposed for dual-polarization quadrature-phase-shift-keying (DP-QPSK) with coherent detection. The bit error rate (BER) performance, block length effect and linewidth tolerance of the proposed algorithm are evaluated for a 112 Gbit/s DP-QPSK system. A linewidth symbol duration product of 2.9×10?4 is demonstrated for 1 dB optical signal-to-noise-ratio (OSNR) penalty at BER of 10?3 for the proposed algorithm. The hardware complexity of the proposed multiplier-free algorithm is demonstrated to be much lower than that of the 4th power algorithm.
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Kang-ping Zhong, Tang-jun Li, Nan Jia, Jian Sun, Mu-guang Wang. An improved multiplier-free feed-forward carrier phase estimation for dual-polarization QPSK modulation format[J]. Optoelectronics Letters,2013,9(4):305-308
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