Estimating Optimum Dispersion Suppresses FWM in DWDM System

• Main Authors: Chih Hsu, 許智
• Other Authors: Po-Chou Lai
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/56266116377260530963

碩士 === 國立臺北科技大學 === 光電技術研究所 === 90 === Four-Wave Mixing (FWM) is one of main factors degrading the system performance in dense wavelength—division multiplex (DWDM) transmission system. Though dispersion management can reduce the FWM power, FWM still is a serious problem in the narrow channel spacing of DWDM transmission system. In this paper, the first we use various dispersion of non-zero dispersion shifted fiber (NZDSF) to simulate a DWDM system with 10Gb/s, 8channel, 400km and channel spacing of 04nm. Then we find the relationship between the chromatic dispersion of the transmission fiber and the transmission performance in DWDM system. It shows that the optimum dispersion value exit around 6 to 11 ps/nm/km. Next we adds the channel 8 to 14 in the same system. It shows the optimum dispersion value around 8 to 9 ps/nm/km. We hope this result can supply to a suggestion in manufacture fiber in the future.