Precise clock synchronization over optical fiber
US8600239B2 · kind B2 · utility
8Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Dec 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0667
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A clock at a first network element that is connected to a second network element over first and second optical links that are physically distinct from each other is aligned using optical timing signals having different wavelengths. Transit delays between the first and second network elements may be determined using the same optical timing signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.