Injection locked dual opto-electronic oscillator
US7151415B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Jun 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2/002
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An injection locked dual opto-electronic oscillator having a master oscillator which generates a high Q RF output signal with a plurality of harmonic signals within a predetermined pass band. A slave oscillator has a modulation input coupled to the output signal from the master oscillator as well as an output signal. The slave oscillator has a cavity length selected to produce a single mode operation within the pass band. An electronic phase shifter in the slave oscillator is adjustable to produce constructive interference at a single harmonic of the output signal from the master oscillator and destructive interference of all other harmonics within the pass band and to bring the slave oscillator into injection locked condition with the master oscillator. Therefore the slave OEO is used as a filter for the spurious radiation generated by the master OEO and at the same time preserves the high Q of the RF carrier signal from the master OEO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.