Transoceanic Transmission of 40 $\,\times\,$117.6 Gb/s PDM-OFDM-16QAM Over Hybrid Large-Core/Ultralow-Loss Fiber
Transoceanic Transmission of 40 $\,\times\,$117.6 Gb/s PDM-OFDM-16QAM Over Hybrid Large-Core/Ultralow-Loss Fiber
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DOI：
10.1109/jlt.2012.2210388
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发表时间：
2013-02
影响因子：
4.7
通讯作者：
Shaoliang Zhang;Yequn Zhang;Ming-Fang Huang;F. Yaman;E. Mateo;D. Qian;Lei Xu;Y. Shao;I. Djordjevic
中科院分区：
文献类型：
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作者：
Shaoliang Zhang;Yequn Zhang;Ming-Fang Huang;F. Yaman;E. Mateo;D. Qian;Lei Xu;Y. Shao;I. Djordjevic
实验证明了采用正交频分复用调制方式传输40 × 117.6 Gb/s的16正交调幅，传输距离为10 181 km。采用以下技术实现无差错传输：1)采用大芯/超低损耗混合光纤，提高接收光信噪比，同时增强光纤的非线性容忍度；2)采用多波段非线性补偿算法，进一步提高非线性容忍度；3)硬判决和软判决FEC码串联提供的前向纠错（FEC）限制为5.3 dB，保证了具有3个符号存储的turbo均衡器后的无差错传输，从而达到4.7 b/s/Hz的频谱效率。
We experimentally demonstrated transmitting 40 × 117.6 Gb/s 16 quadrature amplitude modulation with orthogonal frequency division multiplexing modulation over 10 181 km. The following techniques are applied to achieve error-free transmission: 1) hybrid large-core/ultralow-loss fibers were used for improving received optical signal-to-noise ratio while enhancing fiber nonlinearity tolerance; 2) multiband nonlinearity compensation algorithm was performed to further improve nonlinearity tolerance; 3) the forward error correction (FEC) limit of 5.3 dB provided by the concatenation of hard-decision and soft-decision FEC codes ensures to have error-free transmission after turbo equalizer with memory of three symbols, thus attaining a spectral efficiency of 4.7 b/s/Hz.