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Chinese Optics Letters, Volume. 14, Issue 10, 100601(2016)

Carrier phase estimation scheme for faster-than-Nyquist optical coherent communication systems

Chengcheng Li1, Dongwei Pan1, Yiqiao Feng1, Jiachuan Lin1, Lixia Xi1, Xianfeng Tang1, Wenbo Zhang2, and Xiaoguang Zhang1、*
Author Affiliations
  • 1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
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    Figures&Tables (9)
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    References (21)
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    PN tracking performances of VVPE in the case of τ=0.75.

    Fig. 1. PN tracking performances of VVPE in the case of τ=0.75.

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    Logic diagram of the modified-VVPE algorithm.

    Fig. 2. Logic diagram of the modified-VVPE algorithm.

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    Architecture of the PDM–QPSK FTN transmission system.

    Fig. 3. Architecture of the PDM–QPSK FTN transmission system.

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    Linewidth symbol duration product versus CSR with different block lengths: (a) VVPE scheme, (b) modified-VVPE scheme.

    Fig. 4. Linewidth symbol duration product versus CSR with different block lengths: (a) VVPE scheme, (b) modified-VVPE scheme.

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    PN tracking performances of the VVPE and the modified-VVPE.

    Fig. 5. PN tracking performances of the VVPE and the modified-VVPE.

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    CSR of the VVPE and modified-VVPE algorithm.

    Fig. 6. CSR of the VVPE and modified-VVPE algorithm.

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    BER versus OSNR performance at different linewidths: (a) amall linewidth and (b) large linewidth.

    Fig. 7. BER versus OSNR performance at different linewidths: (a) amall linewidth and (b) large linewidth.

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    OSNR penalty vs. different values of Δf·Ts at BER=1.0×10−2.

    Fig. 8. OSNR penalty vs. different values of Δf·Ts at BER=1.0×10−2.

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    • Table 1. Linewidth Tolerance of Various Length N for VVPE and Modified-VVPE in a PDM–QPSK FTN System

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      Table 1. Linewidth Tolerance of Various Length N for VVPE and Modified-VVPE in a PDM–QPSK FTN System

      Length N(Δf·Ts)maxΔvmax at 28 Gbaud (MHz)
      150 (VVPE)2.5×10−50.700
      80 (M-VVPE)3.1×10−50.868
      200 (VVPE)3.3×10−50.924
      150 (M-VVPE)3.9×10−51.092
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    Chengcheng Li, Dongwei Pan, Yiqiao Feng, Jiachuan Lin, Lixia Xi, Xianfeng Tang, Wenbo Zhang, Xiaoguang Zhang, "Carrier phase estimation scheme for faster-than-Nyquist optical coherent communication systems," Chin. Opt. Lett. 14, 100601 (2016)

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: May. 8, 2016

    Accepted: Aug. 5, 2016

    Published Online: Aug. 2, 2018

    The Author Email: Xiaoguang Zhang (xgzhang@bupt.edu.cn)

    DOI:10.3788/COL201614.100601

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology