Enhanced Tolerance of Rayleigh Backscattering in WDM-PONs by using Coded RZ Modulation

被引:0
|
作者
Choudhury, P. K. [1 ]
机构
[1] KUET, Dept Elect & Commun Engn, Khulna 9203, Bangladesh
关键词
Reflective Semiconductor Optical Amplifier; Rayleigh Backscattering Noise; Passive Optical Networks; ACCESS NETWORKS;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Rayleigh backscattering (RB) noise is a fundamental limitation for a centralized loopback WDM-PONs based on RSOA in ONU side. By exploring the RSOA chirp induced spectral boarding with DC-balanced line coding, here a novel modulation format called as Coded RZ is proposed to enhance the system tolerance against RB. The results showed that the signal-to-noise (SCR) is improved by about 8 dB and 2.5 dB from the conventional NRZ and RZ modulation formats respectively to maintain the power penalty <= 2dB.
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页数:4
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