脉冲啁啾对相位共轭通信系统性能的影响

Effects of Frequency Chirping on the Performance of Optic Communication System Using Midway Optical Phase Conjugation

数值模拟了线性啁啾高斯脉冲在光纤中的传输演化过程,分析了线性啁啾高斯脉冲的传输特性。结果表明,脉冲啁啾不会影响中置相位共轭系统对色散和非线性效应导致的信号失真的完全补偿;单模光纤中啁啾将导致脉冲信号产生初期窄化和末期窄化过程,这种传输特性可用来优化相位共轭系统的总体结构设计,进一步改善和提高系统的补偿性能。

Effects of frequency chirping of Gaussian pulses on the optical communication system using midway optical phase conjugation were analyzed. Evolution of the chirped pulses in the system was simulated numerically. The propagation property of the pulses was analyzed. The results show that the initial chirp of Gaussian pulse does not affect compensations for dispersion and nonlinearity effects in the system. The chirp leads to the initial and final narrowing stages of pulse. It is useful for optimizing the design of the system and improving compensation performance for pulse waveform distortion.