Optoelectronic system comprising several sections having respective functions coupled by evanescent coupling and production process
US6633699B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2002 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Jan 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optoelectronic system comprising at least three sections corresponding to specific respective functions and having different respective band gap energies, at least for the adjacent pairs of sections. These three sections consist of at least two layers superposed by epitaxy. The upper layer is etched in order to define said sections in the form of two separate end sections defined in the upper layer on each side of an intermediate section defined in the lower layer, and to allow coupling between the intermediate section and each of the end sections which flank it, by evanescent coupling. The length of the intermediate section is such that the product K×L, in which K represents the coupling coefficient of a grating of the intermediate section, is one of the order of 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.