上行相干接收的对称10Gb/s长距离WDM-PON

Symmetric 10Gb/s long distance WDM-PON using coherent technology for upstream

利用基于载波分发技术,对WDM-PON的上行信号采用QPSK调制和相干接收,实现了双向对称长距离传输。仿真实验表明,在不使用任何光放大器的条件下,上行和下行传输速率为10Gb/s时传输距离可达60km,解决了采用无光源ONU时WDM-PON传输距离受限于上行传输的问题。

In the paper, based on carrier distribution technology, the WDM-PON uplink signal using QPSK modulation and coherent receiver to achieve a bidirectional symmetrical long-distance transmission. Simulation experimental results show that the maximum transmission distance is over 60km as the bit rates for both upstream and downstream are 10Gb/s, solving the limitation on transmission distance due to upstream signal in WDM-PON adopting the ONU without light source.