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Chinese Optics Letters, Volume. 13, Issue 11, 110602(2015)

Adaptive digital backward propagation based on variance of intensity noise

Lin Jiang1, Lianshan Yan1、*, Zhiyu Chen1, Anlin Yi1, Yan Pan1, Wei Pan1, Bin Luo1, and Guifang Li2
Author Affiliations
  • 1Center for Information Photonics & Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 611756, China
  • 2College of Optics & Photonics (CREOL), University of Central Florida, Orlando, FL 32816, USA
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    (a) Block diagram and (b) principle of proposed ADBP algorithm. ADC: analog-to-digital conversion; FOC: frequency-offset compensation.

    Fig. 1. (a) Block diagram and (b) principle of proposed ADBP algorithm. ADC: analog-to-digital conversion; FOC: frequency-offset compensation.

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    Flowchart of the proposed ADBP.

    Fig. 2. Flowchart of the proposed ADBP.

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    Simulated performance: (a) normalized intensity noise variance with different products of γ*ξ under the different fiber output powers p for the 40 Gb/s PDM-QPSK; (b) BER versus launching power over 720 km SMF link with LE compensation, conventional DBP, and proposed ADBP.

    Fig. 3. Simulated performance: (a) normalized intensity noise variance with different products of γ*ξ under the different fiber output powers p for the 40 Gb/s PDM-QPSK; (b) BER versus launching power over 720 km SMF link with LE compensation, conventional DBP, and proposed ADBP.

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    Simulated performance: (a) BER versus launching power over 40×100 km SMF link for LE, standard DBP, and proposed ADBP for the 112 Gb/s PDM-QPSK. (b) Normalized intensity noise variance with different products of γ*ξ and corresponding constellation diagrams (20×100 km SMF link) for the 224 Gb/s PDM-16-QAM.

    Fig. 4. Simulated performance: (a) BER versus launching power over 40×100  km SMF link for LE, standard DBP, and proposed ADBP for the 112 Gb/s PDM-QPSK. (b) Normalized intensity noise variance with different products of γ*ξ and corresponding constellation diagrams (20×100  km SMF link) for the 224 Gb/s PDM-16-QAM.

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    Experimental results of BER versus launching power over 720 km SMF for LE and new ADBP.

    Fig. 5. Experimental results of BER versus launching power over 720 km SMF for LE and new ADBP.

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    Lin Jiang, Lianshan Yan, Zhiyu Chen, Anlin Yi, Yan Pan, Wei Pan, Bin Luo, Guifang Li, "Adaptive digital backward propagation based on variance of intensity noise," Chin. Opt. Lett. 13, 110602 (2015)

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    Paper Information

    Category: Atomic and Molecular Physics

    Received: Jul. 29, 2015

    Accepted: Sep. 18, 2015

    Published Online: Sep. 13, 2018

    The Author Email: Lianshan Yan (lsyan@home.swjtu.edu.cn)

    DOI:10.3788/COL201513.110602

    Topics

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