Optical dispersion monitoring technique using double sideband subcarriers
Optical dispersion monitoring technique using double sideband subcarriers
复制标题
使用双边带子载波的光色散监测技术
DOI：
10.1109/68.853544
复制
发表时间：
2000
影响因子：
2.6
通讯作者：
D. Blumenthal
中科院分区：
文献类型：
--
作者：
T. E. Dimmick;G. Rossi;D. Blumenthal
提出了一种无需恢复基带就能测量影响数字光信号的累积色散的技术，并进行了实验验证。该技术允许独立于数据源和传输历史来测量累积色散。该技术采用了一个调幅双边带副载波施加到信号在发射机和监测在任意一个点的链路或网络中使用一种新的抑制边带光抽头技术。测量副载波信号的上、下边带之间的相位差，并将其用于计算色散。粗、细测量相结合，实现了高精度、大动态范围的色散监测。
A technique for measuring the accumulated dispersion affecting a digital optical signal without recovering the baseband was developed and experimentally demonstrated. This technique allows measurement of the accumulated dispersion independently of the data origin and transport history. The technique employs an amplitude-modulated double-sideband subcarrier applied to the signal at the transmitter and monitored at an arbitrary point in a link or network using a novel suppressed-sideband optical-tap technique. The phase difference between the upper and lower sidebands of the subcarrier signal is measured and used to compute the dispersion. A combined coarse and fine measurement realizes high accuracy and large dynamic-range dispersion monitoring.