System for reducing the influence of polarization mode dispersion in high-speed fiber optic transmission channels
US6437892B1 · kind B1 · utility
12Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1998 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Sep 9, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2569
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for reducing the influence of polarization mode dispersion (PMD) in high speed fiber optical transmission channels. A signal is forward error correction (FEC) encoded according to an FEC code that defines a specified error tolerance per codeword. The invention then effectively randomizes the input polarization of the signal before transmission, in order to reduce the likelihood that PMD will distort one or more codewords beyond the allowed error tolerance. The invention will thereby increase the PMD-limited transmission distance in an optical transmission system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.