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引用次数: 3
摘要
本文首次通过仿真比较了远距离100gb /s直接检测光OFDM (do -OFDM)和相干光OFDM (CO-OFDM)波分复用(WDM)系统的传输性能。为实现高性能、低成本的OFDM WDM系统提供了系统参数选择的具体指导。具体比较包括三个方面:对发射功率进行考察，以获得更好的系统性能;对激光线宽进行数值研究，以选择性价比高的激光器;分析了不同激光线宽下的系统色散容差，进一步揭示了直接检测和相干检测两种检测方法在远距离OFDM WDM系统中的优缺点。
Comparison Study of Long-haul 100-Gb/s DDO-OFDM and CO-OFDM WDM Systems
In this paper, for the first time, the transmission performances of
long-haul 100-Gb/s direct detection optical OFDM (DDO-OFDM) and coherent
optical OFDM (CO-OFDM) wavelength division multiplexing (WDM) systems are
compared by simulation. It provides specific guides for system parameter
selection to get a high-performance and cost-effective OFDM WDM system.
Specifically, the comparison involves three aspects: launched power is
investigated to achieve better system performance; laser linewidth is
numerically investigated to choose cost-effective laser; system dispersion
tolerances with different laser linewidths are analyzed to further reveal
the advantages and disadvantages of these two detecting methods, direct
detection and coherent detection, in long-haul OFDM WDM system.
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