Polarisationsmodendispersionssteuerung mit vorwärtsgekoppelter Kompensation

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 disperion 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;26a-26c;73a-73c) is provided for tapping the input optical light wave, 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.