50 Gbit/s NRZ IM-DD Downstream Transmission System Based on 25G-Class Optical Components

被引：1
|
作者：
Chen Wei [1 ,2 ]
Song Yingxiong [1 ,2 ]
Li Zhengxuan [1 ,2 ]
Li Chengcheng [1 ,2 ]
Chen Jian [1 ,2 ]
Li Yingchun [1 ,2 ]
机构：
[1] Shanghai Inst Adv Commun & Data Sci, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200444, Peoples R China
来源：
ACTA OPTICA SINICA | 2019年 / 39卷 / 06期
关键词：
optical communications; timing-recovery; channel estimation; equalizations; maximum likelihood sequence estimation; decision feedback equalization; EQUALIZATION;
D O I：
10.3788/AOS201939.0606003
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The fourth-order pulse amplitude modulation signal requires high linearity and a small dispersion tolerance in an optoelectronic device. The bandwidth limitation of the 10G-class optics device severely degrades system performance. This study describes a 50 Gbit/s non-return zero (NRZ) signal transmission scheme using commercial 25G-class optical components. Herein, for a back-to-back and 25-km standard single-mode fiber transmission, the maximum likelihood sequence estimation and decision feedback equalization based on the least mean square algorithm arc used for decoding. A comparison of the bit error rate performances under different received optical power conditions proves that the 50 Gbit/s NRZ signal transmission based on the 25G-class optics device can act as a single-wavelength 50 Gbit/s candidate solution.
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页数：9
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