Optical coupler integrated on a substrate and comprising three elements
US9547137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupler integrated on a substrate, that will optically couple a laser and a waveguide and including an external element, including two arms separated by a notch, this notch being delimited laterally by two first walls at a spacing that reduces towards the bottom of the notch; a central element, located in the notch delimited laterally by two second walls and with a first region in which the two second walls are in direct contact with two first walls as far as the bottom of the notch; and an intermediate element, extending between the external element and the central element. The optical index of the central element is greater than the optical index of the intermediate element, itself greater than the optical index of the arms of the external element. Such an optical coupler provides efficient coupling between a laser emitting in the mid-infrared and a waveguide integrated on a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.