R.F. signal summing using non-linear optical phase conjugation
US6020990A · kind A · utility
6Cited by
22References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | May 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2563
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for summing RF modulated optical signals. In order to compensate for performance degradation at the summing junction, the system utilizes four-wave mixing elements to provide the phase conjugates of each of the modulated RF signals. The phase conjugates of the RF modulated optical signals are summed at the summing junction. The use of the phase conjugates of the RF modulated optical signals compensates for optical phase errors known to degrade performance when summing RF modulated optical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.