40 Gbit/s非等幅编码光时分复用传输系统  

40 Gbit/s OTDM System with Unequal Amplitude Coding Methods

作　　者：左鹏[1] 张帆[1] 伍剑[1] 林金桐[1] 叶培大[1] 高以智[2] 简水生[3] 

机构地区：[1]北京邮电大学光通信中心,北京100876 [2]清华大学电子工程系,北京100084 [3]北方交通大学光波所,北京100044

出　　处：《光学学报》2002年第9期1145-1148,共4页Acta Optica Sinica

基　　金：86 3计划通信技术主题重大课题"40Gbit s光时分复用关键技术研究"资助课题

摘　　要：4× 10Gb s非等幅编光时分复用 (OTDM)传输系统采用增益开关分布反馈式激光器 (GS DFB)产生超短光脉冲 ,通过色散补偿光纤 (DCF)和梳状色散光纤链 (CDPF)实现了脉冲的线性和非线性压缩 ;利用啁啾光纤光栅实现色散补偿 ;在接收端 ,利用电吸收调制器 (EAM)实现了光时分复用信号的解复用 ;同时采用非等幅编码方案提取帧时钟。整个系统经过 12 2km的G .6 5 2光纤传输之后 ,误码率小于 10 - 9。A 40 Gb/s optical time division multiplexing (OTDM) system is presented and discussed. Frame structure of OTDM data stream is designed based on unequal amplitude coding methods. Gain-switched distributed-feedback laser (GS-DFB) and comb-like dispersion profiled fiber (CDPF) are employed to generate the ultra-short optical pulses; chirped fiber grating for dispersion compensation; electro-absorption modulator (EAM) for de-multiplexing the 40 Gbit/s data stream. The frame clock (10 GHz) is extracted from the data stream with high Q value electronic filter. After transmission over 122 km single mode fiber (SMF), bit error rate of the whole system is less than 10 -9.

关 键 词：传输系统 光时分复用 分布反馈式激光器 状色散光纤链 啁啾光纤光栅 电吸收调制器 非等幅编码 

分 类 号：TN929.1[电子电信—通信与信息系统] TN914[电子电信—信息与通信工程]