Scanning electromagnetic-field imager with optical-fiber-based electro-optic field-mapping system
US6677769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/311
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microwave and millimeter-wave electric-field mapping system based on electro-optic sampling has been developed using micromachined Gallium Arsenide crystals mounted on gradient index lenses and single-mode optical fibers. The probes are able to detect three orthogonal polarizations of electric fields and, due to the flexibility and size of the optical fiber, can be positioned not only from the extreme near-field to the far-field regions of microwave and millimeter-wave structures, but also inside of enclosures such as waveguides and packages. A microwave electric-field-mapping system based on micromachined GaAs electro-optic sampling probes mounted on gradient index lenses and single-mode optical fibers can extract field images from the interior of an enclosed microwave cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.