Transmission of 2 × 56 Gb/s PAM-4 signal over 100 km SSMF using 18 GHz DMLs.

Transmission of 2 × 56 Gb/s PAM-4 signal over 100 km SSMF using 18 GHz DMLs.
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DOI:
10.1364/ol.41.001805
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发表时间:
2016-04
期刊:
影响因子:
3.6
通讯作者:
Shiwei Zhou;Xiang Li;L. Yi;Qi Yang;S. Fu
Shiwei Zhou;Xiang Li;L. Yi;Qi Yang;S. Fu
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Shiwei Zhou;Xiang Li;L. Yi;Qi Yang;S. Fu

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我们实验证明了c波段2 × 56 Gb/s脉冲幅度调制(PAM)-4信号在100公里标准单模光纤(SSMF)上使用18 GHz直接调制激光器(dml)和直接检测,没有内联光放大器。在发射端使用延迟干涉仪(DI)将传输距离从40公里扩展到100公里。在接收端使用数字Volterra滤波器来减轻非线性失真。在最佳输入功率下,2 × 56 Gb/s PAM-4信号在100 km SSMF传输后的平均误码率(BER)为1.5 × 10(-3),低于7%的前向纠错(FEC)阈值(3.8 × 10(-3))。
We experimentally demonstrate C-band 2 × 56 Gb/s pulse-amplitude modulation (PAM)-4 signal transmission over 100 km standard single-mode fiber (SSMF) using 18 GHz direct-modulated lasers (DMLs) and direct detection, without inline optical amplifier. A delay interferometer (DI) at the transmitter side is used to extend the transmission reach from 40 to 100 km. A digital Volterra filter at the receiver side is used to mitigate the nonlinear distortions. We obtain an average bit error ratio (BER) of 1.5 × 10(-3) for 2 × 56 Gb/s PAM-4 signal after 100 km SSMF transmission at the optimal input power, which is below the 7% forward error correction (FEC) threshold (3.8 × 10(-3)).