PAM4 based symmetrical 112-Gbps long-reach TWDM-PON

被引：2
|
作者：
Wu, Liyu [1 ]
Gao, Fan [1 ]
Zhang, Minming [1 ]
Fu, Songnian [1 ]
Deng, Lei [1 ]
Choi, Michael [2 ]
Chang, Donald [2 ]
Lei, Gordon K. P. [2 ]
Liu, Deming [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Next Generat Internet Access Natl Engn Lab, Wuhan 430074, Hubei, Peoples R China
[2] MTel Telecommun Co, Macau, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2018年 / 409卷
关键词：
Pulse amplitude modulation (PAM); Digital signal processing; Nonlinear filters; Passive optical network (PON); TRANSMISSION; GB/S; NETWORKS; SYSTEM; DMLS;
D O I：
10.1016/j.optcom.2017.09.051
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We experimentally demonstrate cost effective symmetrical 112-Gbps long-reach passive optical network (LRPON) over 70-km standard signal mode fiber (SSMF), based on pulse amplitude modulation (PAM)-4. Four 10Gclass directly modulated lasers (DMLs) at C-band are used for achieving 4 x 28-Gbps downstream transmission, while two 18G-class DMLs at O-band are used to realize 2 x 56-Gbps upstream transmission, without any optical amplification in optical distributed network (ODN). Both dispersion compensation fiber (DCF) for downstream signal and praseodymium-doped fiber amplifier (PDFA) for upstream signal are equipped at optical line terminal (OLT). Meanwhile, sparse Volterra filter (SVF) equalizer is proposed to mitigate the transmission impairments with substantial reduction of computation complexity. Finally, we can successfully provide a loss budget of 33 dB per downstream wavelength channel, indicating of 64 optical network units (ONUs) with more than 1.25 Gbps per ONU. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：117 / 122
页数：6
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