Optical phased array with simplified addressing
US10466570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2018 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/2955
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for emission of an electromagnetic wave front designed to be connected in use to a light source emitting a light beam, and including at least three emission waveguides, each including a straight segment that receives one or several optical power extraction elements; and on the input side of each of the straight segments, a phase shift element and an optical coupler with an adjustable coupling ratio. At least two straight segments extend along straight lines that are not parallel to each other. An orientation of a principal emission beam is selected, defined in far field, by adjusting the coupling ratio of each of the optical couplers and the phase shift introduced by phase shift elements receiving the optical power. The invention is particularly advantageous in the context of remote detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.