Patent ID: 7257290
Filing Date: 2007-08-14
Classification: H04B

Abstract:
1. A method for performing optical dispersion compensation of wave-length division multiplexed (WDM) optical signals, the method comprising: providing a compensation stage comprising: wherein the compensation stage compensates dispersion of the WDM optical signals when the WDM optical signals are transmitted spectrally dispersed into wavelength channels through the parallel polarization controllers; determining polarization states of the spectral components of the optical signals for each of the wavelength channels; defining a first feedback signal required for setting the polarization controllers when compensating with the parallel polarization controllers for each wavelength channel; determining the chromatic dispersion of the optical signals of at least one wavelength channel, and extrapolating the chromatic dispersion of the other wavelength channels based on the determined chromatic dispersion; defining a second feedback signal required when compensating for the chromatic dispersion at each wavelength channel; calculating the polarization controller setting per wavelength channel based on the first and second feedback signals; applying the respective setting on the parallel polarization controllers, and compensating the optical dispersion of the WDM optical signals at each wavelength channel.