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http://dx.doi.org/10.6109/jkiice.2008.12.10.1860

Numerical Optimization of NRZ 40Gbps WDM systems  

Lee, Jong-Hyung (동의대학교 전자공학과)
Han, Dae-Hyun (동의대학교 전자공학과)
Lee, Yong-Jae (동의대학교 전자공학과)
Choi, Byeong-Yoon (동의대학교 컴퓨터공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.12, no.10, 2008 , pp. 1860-1865 More about this Journal
Abstract
40Gbps WDMSystems have been studied by numerical simulation to optimize their performance. Standard single mode fiber is assumed, and the most popular modulation format, NRZ, is used for the study. These assumptions are valid when existing WDM systems are required to upgrade their performance to 40Gbps. It is shown that the standard single mode fiber can transmit optical signals over 4800 (BER < 10-15) by optimizing optical and electrical filter characteristics at the receiver and by compensation of dispersion. In addition, when the system performance is mainly limited by ASE noise of EDFAs, it is found that flattop-shaped optical filter at the receiver gives a better result than Gaussian-shaped filter unless the insertion loss of the optical filter is larger than 5dB.
Keywords
WDM; 40Gbps; Standard Single Mode Fiber;
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