【摘要】 研究了高速色散控制准线性传输系统中的信道内交叉相位调制和信道内四波混频等非线性相互作用,分析了信道内交叉相位调制导致定时抖动和信道内四波混频导致振幅抖动随距离和色散分布强度变化的规律,然后运用快速傅里叶变换法分析了信道内交叉相位调制导致的 25 -1 的伪随机码流的定时抖动和振幅抖动及寄生脉冲的产生,证实了理论分析。最后通过数值模拟实现了色散分布强度为127的强色散控制系统中准线性脉冲序列1600 km的稳定传输,结论对用标准单模光纤实现高速传输具有重要意义。更多还原

【Abstract】 Theintrachannel cross-phase modulation (IXPM) and intrachannel four-wave mixing (IFWM) in dispersion managed quasi-linear systems is researched, and the role of the timing jitter induced by IXPM and the amplitude jitter and the ghost pulse induced by IFWM change with distance and dispersion map strength are analyzed theoretically. Then the theoretical analysis results are verified by the timing jitter, amplitude jitter and the generation of ghost pulse of a 25-1 pseudorandom binary sequence (PRBS) by using fast Fourier transform method. Finally, the stable transmission of 1600 km is verified in dispersion managed quasi-linear systems with dispersion map strength of 127 by numerical simulations. The results are important for high speed transmission based on single-mode fiber.更多还原