基于频域相位共轭技术的交叉相位调制所致失真的复原  

Suppression of pulse impairments due to cross-phase modulation by frequency domain phase conjugation

作　　者：步扬[1] 王向朝[1] 

机构地区：[1]中国科学院上海光学精密机械研究所信息光学实验室,上海201800

出　　处：《物理学报》2005年第10期4747-4753,共7页Acta Physica Sinica

基　　金：国家863计划(批准号:2002AA404050);上海市纳米专项(批准号:0214nm091;0359nm004)资助的课题.~~

摘　　要：理论分析和讨论了基于频域相位共轭技术的交叉相位调制所致信号失真的复原和补偿机理,数值模拟了在交叉相位调制作用下,高斯脉冲在中距相位共轭光纤系统中的传输演化过程.结果表明,频域相位共轭技术能够抑制交叉相位调制对光纤系统中传输信号的损害,复原其所导致的信号失真,并能够同步补偿群速度色散和自相位调制非线性效应所导致的信号失真.合适的初始脉冲时延和初始脉冲啁啾有利于频域相位共轭技术对交叉相位调制所致信号失真的抑制.The use of optical frequency domain phase conjugation （FDPC） to suppress pulse impairments due to cross-phase modulation （XPM） in optical fiber systems is proposed. Evolution of Gaussian pulses in the system using midway FDPC is analyzed theoretically and simulated numerically. It is found that pulse waveform impairments induced by XPM can be suppressed effectively by FDPC. The impairments due to group-velocity dispersion and self-phase modulation can be suppressed simultaneously. Suitable initial time delay and pulse chirp of pulses can improve the suppression and compensation for the distortion.

关 键 词：频域相位共轭 交叉相位调制 色散 自相位调制 相位共轭 信号失真 技术 频域 复原 光纤系统 

分 类 号：TN929.11[电子电信—通信与信息系统]