采用OFDM信号作为标记的光分组交换方案  

An Optical Packet Switching System with a Novel Scheme for Using Optical OFDM Label Signal

作　　者：张超俐[1] 陈林[1] 邵宇丰[1] 曹子峥[1] 李登科[1] 余建军[1] 

机构地区：[1]湖南大学计算机与通信学院微纳光电器件及应用教育部重点实验室,长沙410082

出　　处：《光子学报》2010年第1期84-88,共5页Acta Photonica Sinica

基　　金：国家高科技研究发展计划("863"计划)基金(2007AA01Z263);湖南省自然科学基金(06JJ50108);教育部光通信和光波技术重点实验室(北京邮电大学)开放基金资助

摘　　要：以光正交频分复用信号作为光标记,利用两个不同波长的光载波分别经过强度调制,产生了10 Gb/sOOK光载荷和2.5 Gb/sOFDM光标记。测得了光分组信号经光纤传输前后接收载荷的眼图和标记的星座图以及误码率曲线,结果表明:经过40 km光纤传输后,载荷与标记的功率代价分别为1dB和0.5dB。A novel optical packet switching scheme, in which an optical orthogonal frequency division multiplexing （OOFDM） signal is generated as a label,is proposed and experimentally demonstrated. The 10 Gb/s OOK optical payload and the 2.5 Gb/s OFDM optical label are produced by intensity modulation of two continuous waves with different wavelength, respectively. In the experiment, the eye diagrams of the payload, constellation diagrams of the label and the BER curves of the label and payload are obtained, when the optical packets were transmitted on optical fiber or not. It is experimentally demonstrated that the power penalties for the payload and the label after 40 km fiber transmission are 1 dB and 0. 5 dB, respectively. The scheme is easy to implement, so it can be used in an optical label switched network.

关 键 词：光纤通信 光标记交换 强度调制 正交频分复用 

分 类 号：TN929.11[电子电信—通信与信息系统]