Comparison of RZ versus NRZ pulse shapes for optical duobinary transmission

被引：14
作者：
Chien, Cheng-Chung [1 ]
Lyubomirsky, Ilya [1 ]
机构：
[1] Taiwan Semicond Mfg Co, Hsinchu, Taiwan
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2007年 / 25卷 / 10期
关键词：
duobinary modulation; fiber optic communications; optical filtering; pulse shape; self-phase modulation (SPM);
D O I：
10.1109/JLT.2007.903631
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：
This paper presents an experimental study and comparison of return-to-zero (RZ) versus nonreturn-to-zero (NRZ) pulse shapes for optical duobinary systems. Surprisingly, and contrary to the case of on-off keying, we find the NRZ pulse shape to be superior, compared with RZ, for duobinary transmission in all the cases that were studied, including systems that are limited by amplified-spontaneous-emission noise, fiber chromatic dispersion, and self-phase modulation.
引用
收藏
页码：2953 / 2958
页数：6
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