Multi-wavelength CD and PMD compensator
US7257290B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Aug 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2513
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a method for performing optical dispersion compensation of wavelength division multiplexed (WDM) optical signals. The method comprises the steps of providing a compensation stage with an optical transmission medium to be used as parallel operating cascade of polarization controllers and optical birefringent elements to compensate dispersion of the WDM optical signals when being transmitted spectrally dispersed into the different wavelength channels in parallel through the parallel cascades. The method is being characterized by determining the chromatic dispersion of the optical signals at one or few different wavelength channels possibly allowing an extrapolation of the chromatic dispersion to the other wavelength channels for defining accordingly an additional feedback signal to be used for the polarization controller setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.