Large PMD Compensated by Four Free Degrees in OTDM System

• 作 者: LUO Rui LI Tang-jun WANG Mu-guang JIAN Shui-sheng XU Jing-jing
• 机 构: Key Lab. of all Opt. Network and Adv. Telecomm. Network, Chinese Ministry of Education, Institute of
• 出 处: 城市道桥与防洪
• 发表日期: 2004年期
• 关键词: PMD compensation Fiber grating Polarization

By introducing a two-stage polarization mode dispersion (PMD) compensator after a optical fiber link with a large PMD,over 270 ps first-order and 2 000 ps2 high-order PMD was compensated. The results show that the two-stage compensator can be used to PMD compensation in the 20 Gb/s optical time division multiplexing system with 60 km high PMD fiber. After compensating,the 270 ps DGD is changed into max. 7 ps. Moreover,the tunable FBG has a function of dispersion compensation.