论文部分内容阅读
对传输容量为16×40Gbit/s、传输距离为500～2 000km的DWDM(密集波分复用)系统进行了研究。分析了不同调制方式(CSRZ(载波抑制归零)码、DRZ(双二进制归零)码和MDRZ(改进的双二进制归零)码)、不同色散补偿方案(前置、后置和中间色散补偿)对系统传输性能的影响。仿真结果表明,当传输距离超过1 500km后,MDRZ码能够很好地抑制FWM(四波混频)效应,提高系统性能;中间色散补偿方案比前置色散补偿和后置色散补偿有更好的补偿效果。
The DWDM (Dense Wavelength Division Multiplexing) system with transmission capacity of 16 × 40Gbit / s and transmission distance of 500-2000km was studied. Different modulation schemes (CSRZ, DRZ and MDRZ) are analyzed, and different dispersion compensation schemes (front-end, back-end and mid-range dispersion compensation ) On the system transmission performance. The simulation results show that the MDRZ code can suppress the FWM (four-wave mixing) effect and improve the system performance when the transmission distance exceeds 1 500 km. The intermediate dispersion compensation scheme has better performance than the front dispersion compensation and the post-dispersion compensation Compensation effect.