基于光子灯笼的正交频分/模分复用IM-DD多模光纤传输系统  

Orthogonal Frequency Division/Mode Division Multiplexing IM-DD Multimode Fiber Transmission System Based on Photonic Lanterns

作　　者：陈健 黄青青[1,2] 张倩武 王腾 曾祥龙[1,2] 宋英雄 李迎春 张俊杰[1,2] Chen Jian;Huang Qingqing;Zhang Qianwu;Wang Teng;Zeng Xianglong;Song Yingxiong;Li Yingchun;Zhang Junjie(Shanghai Institute for Advanced Communication and Data Science, Shanghai 200444, China;Shanghai University Key Laboratory of Specialty Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China)

机构地区：[1]上海先进通信与数据科学研究院,上海200444 [2]上海大学特种光纤与光接入网重点实验室,上海200444

出　　处：《光学学报》2018年第6期94-100,共7页Acta Optica Sinica

基　　金：国家自然科学基金(61420106011;61635006;61601279;61601277);上海市科委项目(17010500400;16511104100;16YF1403900)

摘　　要：提出一个基于光子灯笼的正交频分复用(OFDM)/模分复用多模光纤传输系统,利用2个模式选择性光子灯笼分别作为模式复用与解复用器,选取LP_(01)模与LP_(11b)模式作为发送信道,利用自适应比特加载OFDM调制方式在50m长的OM4多模光纤上实现了7.2Gb/s的传输。实验结果表明,调整2路信号的偏振态,当LP01端的入射光功率比LP11b端的入射光功率低4dB左右时,可以保证2路信号在接收端的光功率一致。当2路信号的接收光功率均低至-13dBm时,2路信号的误码率分别为1.3×10^(-3)与3.2×10^(-3),均低于硬判决前向纠错(HD-FEC)门限。该系统为低成本、短距离以及大容量的数据传输场景提供了解决方案。A orthogonal frequency division multiplexing（OFDM）/mode division multiplexing multimode fiber transmission system based on photonic lanterns（PL）is proposed.Two mode selective PLs are used as multiplexer（MUX）and demultiplexer（DEMUX）.LP01 mode and LP11b mode are selected as the transmission channels.An adaptive bit loading OFDM modulation is used to achieve the transmission of 7.2 Gb/s on a 50 m OM4 multimode fiber.The experimental results show that when the incident light power of LP01 mode is about 4 dB lower than that of LP11 b mode,we can achieve the same received optical power by adjusting the polarization state of the two signals.When the received power is-13 dBm,the bit error rates（BERs）of two signals are 1.3×10^-3 and 3.2×10^-3,respectively,which are lower than the threshold of hard decision-forward error correction（HD-FEC）.The system provides a solution for the large capacity data transmission with low cost at short distance.

关 键 词：光纤通信 模分复用 光子灯笼 多模光纤 正交频分复用 比特加载 

分 类 号：TN915.62[电子电信—通信与信息系统]