Optical transmission equipment with dispersion compensation, and dispersion compensating method
US7039272B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2003 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Dec 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25133
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a wavelength-division multiplexing system with an OADM, part of the chromatic dispersion on a transmission line is compensated for by a chromatic dispersion compensator for a dropped wavelength of the wavelength-division multiplexing system. Also, chromatic dispersion is compensated for by a chromatic dispersion compensator for an added wavelength of the wavelength-division multiplexing system. The chromatic dispersion compensator for dropped wavelength acts on the signal dropped by the OADM, and the chromatic dispersion compensator for added wavelength acts on the added signal. Both the chromatic dispersion compensators act on the passing signal. With the chromatic dispersion compensators being mounted in the optical transmission apparatus before the system is upgraded to OADM, it is not necessary to alter the chromatic dispersion compensating method and the variation of the communication quality can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.