Grating lens and focusing grating coupler
US5132843A · kind A · utility
106Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Mar 9, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/124
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A grating lens is disclosed in which diffraction efficiency varies in the focusing direction of light on a surface of the lens. Also disclosed is a focusing grating coupler in which the diffraction efficiency of a grating formed on an optical waveguide, which is formed on a substrate, varies in the focusing direction of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.