基于NRZ+Manchester信号和偏振复用的无源光互连数据中心

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无源光互连数据中心由于其低成本、低功耗和高速率受到了广泛关注.在无源光互连数据中心中,同时可用的信道数目不能超过可用波长数,波长数量也限制了总吞吐量.为了减少光互连数据中心的波长需求、提高光互连数据中心的波长利用率与可扩展性,将NRZ+ Manchester信号结合偏振复用应用于光互连数据中心,实现机架内4个服务器共享一条波长,从而将吞吐量提升4倍.通过仿真验证了该方案在10 Gbit/s速率下能够只使用16个波长实现机架内64个服务器的光互连,在25 Gbit/s速率下只使用8个波长就能够实现32个服务器的光互连.该方案能够节省75%的波长数量,降低设备成本,提高光互连数据中心的吞吐量.
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