Optical waveguide coupler having a grating electrode
US4645293A · kind A · utility
32Cited by
10References
16Claims
0Family size
Inventors
Key dates
| Filing date | Jan 28, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jan 28, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/05
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupling device comprising an electrooptical substrate, a pair of optical waveguides formed in the surface of the substrate and a grating electrode is provided. The grating electrode is so disposed to extend along one of the pair of optical waveguides at least partially. Thus, when a suitable voltage is applied to the grating electrode, a periodically changing structure of refractive index is formed within the one of the paired optical waveguides to couple the paired optical waveguides, thereby allowing to transfer a light signal from one waveguide to the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.