Improved High Pass Filtering for Passive Optical Networks

Improved High Pass Filtering for Passive Optical Networks
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DOI:
10.1109/lpt.2010.2051144
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发表时间:
2010-05
影响因子:
2.6
通讯作者:
D. Jorgesen;C. Marki;S. Esener
D. Jorgesen;C. Marki;S. Esener
中科院分区:
工程技术3区
文献类型:
--
作者:
D. Jorgesen;C. Marki;S. Esener

文献摘要

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高通滤波 (HPF) 是消除中央光源无源光网络 (CLS-PON) 中瑞利噪声的一项很有前景的技术,因为它无需额外硬件即可提高系统性能。在这项研究中,我们通过实验研究了 HPF 的影响。研究发现,适当的滤波器截止频率取决于信号消光比 (ER) 和图案长度。研究发现,适当的 HPF 可以将低 ER 信号中的瑞利噪声灵敏度降低 10 dB 以上。这将有可能降低未来 CLS-PON 的成本。
High pass filtering (HPF) is a promising technique to eliminate Rayleigh noise in central light source passive optical networks (CLS-PONs) because it can improve system performance without additional hardware. In this study, the impact of HPF is experimentally investigated. Appropriate filter cutoff frequency is found to be dependent on signal extinction ratio (ER) and pattern length. Proper HPF is found to reduce Rayleigh noise sensitivity in low ER signals by more than 10 dB. This will potentially reduce the cost of future CLS-PONs.