| 摘要 |
A polarization mode dispersion (PMD) controller device for controlling the state of polarization of an optical light wave comprising a dispersion compensation unit ( 2; 25; 40 ) and an adaptation control unit ( 6; 28; 44 ), wherein the dispersion compensation unit ( 2; 25; 40 ) comprises a multitude of compensation stages processing the optical light wave, and wherein the adaptation control unit ( 6; 28; 44 ) controls the dispersion compensation unit ( 2; 25; 40 ) is characterized in that at least one feed-forward signal tap ( 4; 26 a- 26 c , 73 a- 73 c) is provided tapping the optical light wave inserted into one of the compensation stages, that the feed-forward signal(s) is(are) fed into a distortion analyzer unit ( 5; 27; 66 ) and that the distortion analyzer unit ( 5; 27; 66 ) provides the adaptation control unit ( 6; 28; 44 ) with information about the incoming optical light wave. It accelerates the adaptation speed and lowers the costs of a high-speed PMD controller device.
|
