在微结构光纤中实现四进制向二进制的全光转换  

An all-optical scheme for quaternary-to-binary encoder in microstructured fibers

作　　者：赵乃峰[1] 张霞[1] 王亚苗[1] 郑龙[1] 刘小龙[1] 黄永清[1] 任晓敏[1] 

机构地区：[1]北京邮电大学信息光子学与光通信教育部重点实验室,北京100876

出　　处：《光电子．激光》2009年第12期1561-1564,共4页Journal of Optoelectronics·Laser

基　　金：国家"863"计划资助项目(2007AA03Z447);新世纪优秀人才支持计划资助项目(NCET-08-0736);高等学校学科创新引智计划资助项目(B07005)

摘　　要：提出并实验了一种基于高非线性色散平坦微结构光纤的四进制光信号向二进制光信号的全光转换方案。由于自相位调制(SPM)效应,不同峰值功率的ps光脉冲经过微结构光纤传输后可获得不同展宽程度的输出频谱。基于以上原理,通过滤波可将1路10Gb/s的四进制信号转化成3路不同波长的10Gb/s二进制信号,再将3路信号进行适当的时延和衰减,最后耦合成为1路20Gb/s的二进制信号,实验获得的转换信号消光比达到3.2dB。A novel all-optical scheme for the conversion of quaternary-to-binary data is proposed and demonstrated experimentally in dispersion-flatten high nonlinearity microstructure fiber.Based on the self-phase-modulation（SPM） in microstructure fiber,the broadening of the spectrum varies with the intensity of the ps-pulse changes.In our experiments,three-way 10 Gb/s binary signals are filtered out at different wavelength from one-way 10 GB/s quaternary signal.The three signals are coupled into one-way20 Gb/s signal after proper time delay and attenuation,and the extinction ratio of conversion signal is 3.2 dB.

关 键 词：全光进制转换 微结构光纤 全光信息处理 自相位调制(SPM) 

分 类 号：TN253[电子电信—物理电子学]