Fiber-optic to planar-waveguide optical coupler
US4018506A · kind A · utility
11Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Nov 12, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
By coupling light from a coupling portion of a thin fiber core to a planar waveguide film through the thickness of the substrate supporting the film, sufficient spreading by diffraction takes place in the light traveling through the thickness of the substrate to provide an aperture at the film large enough to permit light coupled into the film from the substrate to have a substantially plane wavefront.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.