高速率差分相移键控信号的长距离传输实验  

Experimental Study of High-Speed Differential Phase-Shift Keying Signal Long-Haul Transmission

作　　者：吴琳[1] 刘亮[1] 张帆[1] 陈章渊[1] 徐安士[1] 

机构地区：[1]北京大学区域光纤通信网与新型光通信系统国家重点实验室,北京100871

出　　处：《光学学报》2010年第1期54-58,共5页Acta Optica Sinica

基　　金：国家863计划(2006AA01Z253;2006AA01Z261);国家自然科学基金(60877045;60736003);国家教育部留学回国人员科研启动基金资助课题

摘　　要：报道了高速率单信道非归零差分相移键控(NRZ-DPSK)调制信号的长距离光纤环路传输。光纤环路总长414km,由4个放大段组成。每个放大段由标准单模光纤(SSMF)和色散补偿光纤(DCF)构成,采用掺铒光纤放大器/分布式拉曼放大器(EDFA/DRA)混合放大。测量了42.8Gb/s差分相移键控信号在环路传输1,2,3圈(414km,828km和1242km)后的光谱和眼图。在接收段使用单端检测的条件下,给出了DPSK信号在背对背情况,414km和1242km传输后的误码率(BER)随接收机功率变化的曲线。DPSK信号在1242km传输后最低误码率可达6.3×10-4。在使用增强型前向纠错(FEC)技术后,能实现无误码传输。The high-speed single-channel transmission of nonreturn-to-zero differential phase-shift keying（NRZ-DPSK） signal is demonstrated using fiber loop.The 414 km fiber loop is divided into four spans,which consist of standard single-mode fiber（SSMF） and dispersion compensation fiber（DCF）,and erbium-doped fiber amplifier/distributed Raman amplifier（EDFA/PRA） are used for hybrid amplification.The optical spectrum and eye diagrams of 42.8 Gb/s DPSK signal are obtained after 414 km,828 km and 1242 km transmission.The curves of bit error rate（BER） of the DPSK signal are given both in back-to-back configuration and after transmission using single-ended detection.The BER is 6.3×10^-4 after 1242 km transmission,and the error-free transmission can be realized using enhanced forward error correction（FEC）.

关 键 词：光通信 长距离传输 差分相移键控 标准单模光纤 混合放大 

分 类 号：TN929.11[电子电信—通信与信息系统]