Patent ID: 6631221
Filing Date: 2003-10-07
Classification: G01M,H04B

Abstract:
A method for compensating the polarization mode dispersion (PMD) of a transmitted optical signal, comprising the steps of:providing a polarization controller coupled to a differential group delay (DGD) generator; providing a feedback loop which controls the polarization controller, wherein the feedback loop implements an optimization algorithm to optimize a feedback parameter of an output signal of the DGD generator; and determining the state of polarization (SOP) of an optical signal present at an output of the polarization controller or at an output of the differential group delay generator; wherein, in a PoincarÃ© sphere representation of states of polarization, the polarization controller provides a rotation around an axis of a point representing a state of polarization of said signal, and the position of the point with respect to the axis is taken into account by the algorithm.