在雙邊帶相位監(jiān)測(cè)方法的基礎(chǔ)上，對(duì)系統(tǒng)結(jié)構(gòu)進(jìn)行了改進(jìn)，提出了一種用于非歸零碼光纖通信系統(tǒng)累積色散實(shí)時(shí)監(jiān)測(cè)的新方法，并進(jìn)行了詳細(xì)的理論推導(dǎo)和仿真計(jì)算。結(jié)果表明，在不對(duì)發(fā)射機(jī)做任何修改的情況下，就可獲得較高精度的監(jiān)測(cè)。在1.55 μm工作波段，10 Gb/s數(shù)據(jù)的累積色散監(jiān)測(cè)范圍達(dá)到±640 ps/nm。
關(guān) 鍵 詞 光纖色散; 色散實(shí)時(shí)監(jiān)測(cè); 累積色散; 監(jiān)測(cè)音子

Abstract An improved method on the structure of double sideband phase detection in optical fiber communication system with non return to zero data is described for real-time accumulated dispersion monitoring, the theory of this method is deduced and the numerical simulation is presented. The results show that this method achieves quite precise monitoring value without any modification of transmitters. In the 1.55 μm region, the range of accumulated dispersion for 10Gb/s data reaches ± 640 ps/nm.
Key words chromatic dispersion; real-time dispersion monitoring; accumulated dispersion; pilot tone