Polarization tracking using signal tone information while keeping least mean squares frequency domain equalization
US9716564B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Jan 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6166
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital signal processor (DSP) of an optical receiver may receive information representing a polarization multiplexed signal including tone information. The polarization multiplexed signal may have an uncorrected state of polarization (SOP). The DSP may determine sets of Stokes parameters based on the tone information. The DSP may determine a set of polarization parameters based on the sets of Stokes parameters. The DSP may apply, based on the set of polarization parameters, a set of operations to the information representing the polarization multiplexed signal. An operation, of the set of operations, may represent a rotation or a phase retardation of the polarization multiplexed signal and may correspond to a polarization parameter of the set of polarization parameters. The set of operations may be applied to the information representing the polarization multiplexed signal in order to generate information representing the polarization multiplexed signal with a corrected SOP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.