Noise tone avoidance in optical networks
US7783193B2 · kind B2 · utility
3Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2007 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Nov 23, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/028
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Identification of optical channels in wavelength division multiplex (WDM) optical networks may be confounded by unwanted noise tones interfering with pilot/dither tones used for identifying optical channels. The invention describes a method of selecting pilot/dither tones that are selectively restricted to avoid allocating dither/pilot tone frequencies that appear as noise tones along the path of an optical channel in the optical network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.