Device and method for determining PMD independent of SOP
US6421153B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2569
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A state-of-polarization (SOP)-independent device 226, 326 and method for determining polarization mode dispersion (PMD) in an optical communication system having an optical transmission line, including a detector 244, 344 coupleable to the optical transmission line, where the detector 244, 344 is capable of analyzing a pulse shape of an optical signal on the optical transmission line to determine PMD of the optical signal. A corrector 246, 346 may be coupled to the detector 244, 344, where the corrector 246, 346 is capable of compensating the optical signal for the determined PMD. A controller 242, 342 may be coupled to the detector 244, 344 and the corrector 246, 346. The pulse shape may comprise an eye diagram, which may contain a first peak and a second peak due to PMD, where the PMD determined by the detector 244, 344 is a function of the distance between the detected first and second peaks, which is indicative of a time delay between the detected first and second peaks. The device and method may also include a verifier 348 coupled to the corrector 246, 346, where the verifier 348 is capable of verifying that the corrector 246, 346 correctly compensated the optical signal for t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.