Kramers–Kronig关系
电子工程
传输(电信)
计算机科学
滤波器(信号处理)
光通信
光学滤波器
相位噪声
噪音(视频)
卡姆
多模光纤
理论(学习稳定性)
光纤
光学
正交调幅
电信
解码方法
物理
工程类
误码率
折射率
计算机视觉
图像(数学)
机器学习
人工智能
作者
Christoph Füllner,Mosaddek Hossain Adib,S. Wolf,J. N. Kemal,W. Freude,C. Koos,S. Randel
标识
DOI:10.1109/jlt.2019.2923249
摘要
We propose a low-complexity digital implementation of the Kramers-Kronig receiver and analyze its performance and complexity. In simulations and experiments, we find that a relatively small number of filter taps is sufficient to achieve a reasonably high accuracy for the phase retrieval and for the reconstruction of the complex field. We show that the Kramers-Kronig receiver performance strongly depends on details of the system design. Unnecessarily broad optical filters decrease the reception quality, because additional noise makes the violation of the minimum-phase condition more likely. Narrow optical filters, however, impose high local oscillator laser stability and reduce the flexibility of this kind of receiver architecture. Further, we demonstrate Kramers-Kronig reception of 16 QAM signals at a net data rate of 267 Gbit/s after transmission over 300 km of standard single-mode fiber. We compare the performance with a conventional intradyne receiver. In a back-to-back setting, we increase the net data rate to 300 Gbit/s.
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