Gain setting method in wavelength division multiplex transmission equipment
US7315696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2003 |
| Grant date | Jan 1, 2008 |
| Priority date | — |
| Expiry date | Aug 27, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2931
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Gain setting of a receiving amplifier, is performed by detecting the necessity of gain setting when a receiving amplifier is turned on, requesting WDM transmission equipment in a preceding station to output ASE light; in a WDM transmission equipment of the preceding station, shutting off both passing-through light and added light, and outputting the ASE light corresponding to a predetermined number of wavelengths of signal light; in the receiving amplifier of the WDM transmission equipment in the station of interest, performing the gain setting by use of the ASE light; and on completion of the gain setting, the WDM transmission equipment of the station of interest, requesting the WDM transmission eouipment of the preceding station to halt the ASE light output, and the WDM transmission equipment of the preceding station, halting the ASE light output upon receiving the request and switching the output to an optical signal output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.