Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method
US6728491B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1999 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2572
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dispersion compensation controlling apparatus used in a very high-speed optical communication system adopting optical time division multiplexing system comprises a first specific frequency component detecting unit (2a) detecting a first specific frequency component in a baseband spectrum in a transmission optical signal inputted to a receiving side over a transmission fiber as a transmission line (6a), a first intensity detecting unit (3a) detecting information on an intensity of the first specific frequency component detected by the first specific frequency component detecting unit (2a), and a polarization-mode dispersion controlling unit (220a) controlling a polarization-mode dispersion quantity of the transmission line (6a) such that the intensity of the first specific frequency component detected by the first intensity detecting unit (3a) becomes the maximum, thereby easily detecting and compensating polarization-mode dispersion generated in a high-speed optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.