Upgrading method, system and apparatus of low-density wavelength division multiplexing system
US8380070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Jun 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0279
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An upgrading method, a system, and an apparatus of a low-density wavelength division multiplexing (WDM) system are provided. The method includes: detecting an output wavelength shift of a wavelength conversion unit, and adjusting an output wavelength of the wavelength conversion unit having the output wavelength shift higher than a threshold, so that the output wavelength shift of the wavelength conversion unit is lower than the threshold; adjusting an adjustable interleaved demultiplexer, until requirements for a demultiplexing parameter of a high-density WDM system are met. Thus, the problem that services are interrupted when a low-density MDM system is upgraded to a high-density MDM system is solved. A WDM system, and a wavelength multiplexing/demultiplexing apparatus and method are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.