OCDM/WDM多跳光网络及其端到端误码率性能研究

采用码分复用与波分复用相结合的技术可以构成基于波长和码字转换的多跳光网络。只考虑码字转换,首先给出了光码分复用/波分复用多跳光网络的构成方法和码字转换器的一般结构,然后分析了网络中端到端的误码率性能。计算结果表明:码字转换次数的增加对端到端误码率的影响较小;当接收端的干扰信道数小于前一码字转换阶段的干扰信道数时,端到端误码率与判决阈值的关系曲线在最小值附近出现一近水平区间。

Study of End-to-End BER Performance of OCDM/WDM Multi-Hop Networks

OCDM/WDM multi-hop networks can be realized by applying OCDM into WDM multi-hop optical networks. This paper only considers optical code conversion. Firstly, it describes the way to realize OCDM/WDM multi-hop networks and the scheme of optical code conversion. Then, the end-to-end BER performance is studied. The results show that the times of code conversion haven't serious effect on end-to-end BER, and there are a floor on the relation curve of end-to-end BER and threshold when the optical code channels collected by code conversion are more than those collected by receiver. In addition, it is found that the number of optical code channels collected by code conversion doesn't seriously influence end-to-end BER.