Optical coupler having improved efficiency
US4097117A · kind A · utility
17Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1975 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Oct 30, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The optical efficiency, with which a coupling portion of a fiber-optic can be coupled by evanescent fields to a planar optical waveguide through a phase-matching diffraction grating on the surface of the planar optical waveguide, is increased by deforming the coupling portion so that it is a negative replica of the undulating surface of the diffraction grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.