RF and microwave receivers based on electro-optic optical whispering gallery mode resonators
US7965745B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0656
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Among others, RF receivers based on whispering gallery mode resonators are described. In one aspect, a photonic RF device includes a laser that is tunable in response to a control signal and produces a laser beam at a laser frequency. The RF device includes a first optical resonator structured to support a whispering gallery mode circulating in the first optical resonator, the optical resonator being optically coupled to the laser to receive a portion of the laser beam into the optical resonator in the whispering gallery mode and to feed laser light in the whispering gallery mode in the optical resonator back to the laser to stabilize the laser frequency at a frequency of the whispering gallery mode and to reduce a linewidth of the laser. The RF device includes a second optical resonator made of an electro-optic material to support a whispering gallery mode circulating in the optical resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.