7x224 Gb/s/ch Nyquist-WDM Transmission Over 1600-km SMF-28 Using PDM-CSRZ-QPSK Modulation

被引：15

作者：

Dong, Ze ^{[1
,2
]}

Yu, Jianjun ^{[3
,4
]}

Jia, Zhensheng ^{[1
]}

Chien, Hung-Chang ^{[1
]}

Li, Xinying ^{[4
]}

Chang, Gee-Kung ^{[2
]}

机构：

[1] ZTE Corp, Morristown, NJ 07960 USA

[2] Georgia Inst Technol, Atlanta, GA 30332 USA

[3] ZTE Corp, Beijing 100876, Peoples R China

[4] Fudan Univ, Shanghai 20443, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2012年 / 24卷 / 13期

关键词：

Coherent detection; maximum likelihood sequence detection (MLSD); Nyquist wavelength-division-multiplexed (WDM); post filter; quadrature-phase-shift-keying (QPSK); signal transmission; spectral efficiency;

D O I：

10.1109/LPT.2012.2198211

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：

We have transmitted a 7 x 224 Gb/s/ch Nyquist wavelength-division-multiplexed signal over a 1600-km conventional single-mode fiber (SMF-28) with 80 km per span and an erbium-doped fiber amplifier-only amplification. Each channel on the 50-GHz grid is modulated using polarization-division-multiplexed quadrature-phase-shift-keying at 56 Gbaud giving a record spectral efficiency of 4 b/s/Hz. Both the post filter and the Viterbi maximum likelihood sequence detection are introduced into digital signal processing, to suppress the undesired noise, linear crosstalk enhancement, and filtering effects. The bit error ratio of all channels after transmission over a 1600-km SMF-28 is smaller than the forward error correction limit of 3.8x10(-3).

引用

页码：1157 / 1159

页数：3

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