高速相干频分复用无源光网络系统辅助管理和控制通道传输与性能  

Auxiliary Management and Control Channel Transmission and Performance of High-Speed Coherent Frequency Division Multiplexing Passive Optical Network System

作　　者：申王伟 王佳叶 李国强 邢思哲 颜安 李忠亚 施剑阳 迟楠 张俊文 Shen Wangwei;Wang Jiaye;Li Guoqiang;Xing Sizhe;Yan An;Li Zhongya;Shi Jianyang;Chi Nan;Zhang Junwen(Key Laboratory for Information Science of Electromagnetic Waves,Ministry of Education,School of Information Science and Technology,Fudan University,Shanghai 200433,China)

机构地区：[1]复旦大学信息科学与工程学院电磁波信息科学教育部重点实验室,上海200433

出　　处：《光学学报》2024年第8期1-8,共8页Acta Optica Sinica

基　　金：国家自然科学基金(62171137,62235005,61925104);上海市自然科学基金(21ZR1408700)。

摘　　要：为了在保持帧结构完整性的同时,低代价地传输管理和控制信号,提出面向高速频分复用相干无源光网络(FDM-CPON)的两种传输管理和控制信号传输机制,即数字端辅助管理和控制通道(AMCC)和数据通道的相加和相乘。通过将AMCC传输的通断键控(OOK)信号映射为数据通道信号幅值的变化,完成数据通道信号幅值再调制,成功将AMCC与数据通道相结合,实现了管理和控制信号与数据通道信号的同步传输。实验结果表明,在基于16QAM传输20 km光纤的200 Gbit/s FDM-CPON系统中,当AMCC的带宽和调制因子(MI)相同时,乘性AMCC对于信号性能的影响更小,自身传输信号的质量也更高。在AMCC的MI为26.1%、带宽为24.4 MHz时,乘性AMCC对信号灵敏度的惩罚比加性AMCC小3 dB。以上研究为未来高速相干频分复用无源光网络AMCC传输与系统设计提供重要参考。Objective With the development of the new generation of mobile communication technology,there is an increased demand for bandwidth,speed,and latency in passive optical networks(PONs).Wavelength-division multiplexing PON(WDM-PON) which utilizes frequency resources for bandwidth allocation can assign different channels to different optical network units(ONUs) simultaneously.This eliminates time slot competition among ONUs,reduces system latency,and holds promise for addressing high-latency issues.An embedded communication channel called the auxiliary management and control channel(AMCC) has been proposed and successfully implemented in WDM-PON to enable the transmission of management and control information at a lower cost without altering the frame structure.In recent years,there has been increasing attention to frequency-division multiplexing coherent PON(FDM-CPON),which also supports bandwidth allocation in the frequency domain.To complete AMCC transmission in FDM-CPON,we put forward two simple and cost-effective transmission mechanisms of transmission management and control signal for FDM-CPON,including the addition and multiplication of AMCC and data channel at the digital end.Meanwhile,we conduct a comparative analysis on the performance of these two transmission mechanisms in a 200 Gbit/s FDM-CPON system based on 16QAM transmission over 20-km fiber.The research results provide references for AMCC transmission and system design of highspeed FDM-CPON in the future.Methods To implement the two transmission mechanisms and conduct a comparative analysis on their performance in a 200 Gbit/s FDM-CPON system based on 16QAM transmission over a 20-km fiber,we generate 16QAM and on-off keying(OOK) signals for the transmission of data channel and AMCC at the digital end respectively.After mapping the low level in OOK to 1 and the high level to a real number greater than 1,the OOK signal can be up-sampled to the same length as the data channel signal.By multiplying bitwise,the combination of multiplication-based AMCC and

关 键 词：光通信 相干无源光网络 相干光通信 光纤通信 频分复用 辅助管理和控制通道 

分 类 号：TN929.11[电子电信—通信与信息系统]