Digital Compensation of SSBI in Direct Detection Multicarrier System With SOA Nonlinearities
Digital Compensation of SSBI in Direct Detection Multicarrier System With SOA Nonlinearities
复制标题
具有 SOA 非线性的直接检测多载波系统中 SSBI 的数字补偿
DOI：
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发表时间：
2017
影响因子：
2.6
通讯作者：
R. Hui
中科院分区：
文献类型：
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作者：
G. Vedala;M. Hameed;R. Hui
我们展示了一个有效的信号-信号拍频干扰（SSBI）的补偿技术的直接检测多载波光学系统的第一次在存在的非线性传递函数引入的半导体光放大器（SOA）。传统的数字SSBI补偿方法考虑了光电探测器的非线性效应，但当系统传递函数为非线性时，增益饱和也会导致子载波间的非线性混频，降低了数字SSBI补偿的有效性。以SOA的非线性传递函数为例，我们表明，SSBI补偿的有效性可以很大程度上恢复时，通过数字反向传播的非线性适当建模。
We demonstrate an efficient signal–signal beat interference (SSBI) compensation technique for a direct-detection multicarrier optical system for the first time in the presence of nonlinear transfer function introduced by a semiconductor optical amplifier (SOA). While conventional digital SSBI compensation takes into account the nonlinear effect of photo-detection due to the square-law characteristic, nonlinear wave mixing among subcarriers can also be introduced by gain saturation if the system transfer function is nonlinear, which reduces the effectiveness of digital SSBI compensation. Using the nonlinear transfer function of SOA as an example, we show that the effectiveness of SSBI compensation can be largely restored when the nonlinearity is properly modeled through digital backpropagation.
影响因子：
2.6
作者：
Schmogrow, Rene;Nebendahl, Bernd;Leuthold, Juerg
通讯作者：
Leuthold, Juerg