基于NRZ+Manchester信号和偏振复用的无源光互连数据中心  

Passive Optical Interconnection Data Center Based on NRZ+Manchester Signal and Polarization Multiplexing

作　　者：邓鸿胜 卢旸[1] 曹露芳 许蒙蒙 毕美华[1] Deng Hongsheng;Lu Yang;Cao Lufang;Xu Mengmeng;Bi Meihua(School of Communication Engineering,Hangzhou Dianzi University,Hangzhou,Zhejiang 310000,China)

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310000

出　　处：《光学学报》2021年第15期33-39,共7页Acta Optica Sinica

基　　金：浙江省属高校基本科研业务费专项资金(GK209907299001-018);杭州电子科技大学研究生科研创新基金(CXJJ202003)。

摘　　要：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。Due to their low costs, low power consumption, and high speed, passive optical interconnection data centers have been widely concerned. In a passive optical interconnection data center, the channel number available at the same time cannot exceed the available wavelength number, and the wavelength number limits the total throughput. To reduce the wavelength requirements for optical interconnection data centers and improve the wavelength utilization and scalability of the optical interconnection data centers, we apply NRZ+Manchester signals combined with polarization multiplexing to the optical interconnection data centers in this paper. Four servers share one wavelength, which increases the throughput by four times. Simulation results show that the proposed scheme can realize the optical interconnection of 64 servers in the rack at the rate of 10 Gbit/s, where only 16 wavelengths are needed. At the rate of 25 Gbit/s, only eight wavelengths are required for the optical interconnection of 32 servers. This scheme can save 75% wavelengths, reduce equipment costs, and improve the throughput of optical interconnection data centers.

关 键 词：光通信 光互连数据中心 偏振复用 叠加信号 无源光互连 

分 类 号：O436[机械工程—光学工程]