Abstract
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.
© 2016 Optical Society of Korea
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