Optical radio-frequency down-conversion and remoting
US9912410B1 · kind B1 · utility
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4References
20Claims
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Key dates
| Filing date | Sep 7, 2016 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Sep 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0307
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for optically down-converting a radio-frequency signal includes phase modulators in a push-pull configuration. Separately tuned optical bandpass filters pass through one or more harmonics and inverse harmonics based on the RF signal to produce a local oscillator. A balanced photo-detector receives a coherent interference signal and derives the down-converted local oscillator from a filtered harmonic and inverse harmonic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.