Optical waveguides
US9329325B2 · kind B2 · utility
91Cited by
27References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2010 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0172
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical waveguide comprising a body of material configured for the contained propagation of light therethrough, a surface relief grating configured to receive the propagating light and at least partially to diffract or reflect it out of the waveguide, and at least one layer of dielectric material of varying thickness having a first surface and a second surface which conforms to a profiled surface of the grating so that the grating exhibits a spatial variation in efficiency dependent on the varying thickness of the dielectric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.