Abstract
We experimentally evaluated the transmission performance of discrete multi-tone (DMT) modulation at wavelengths in the 1300-nm and 1550-nm regions and analyzed the degradation factors. By using their countermeasures to extend transmission distance, we realized the capacity of 100 Gbps with 2WDM x 50 Gbps over 80 km. To our knowledge, this work is the highest capacity in 80-km transmission system using direct modulation and direct detection. These results show that the DMT modulation can be used to realize high capacity transceiver with simple and cost effective configuration for the bi-directional transmission system like a passive optical network.
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