Method of forming planar optical waveguides
US3934061A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1973 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Jul 18, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C23/0025
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing a planar optical waveguide by applying to at least a portion of one flat surface of a substantially flat glass substrate having a predetermined desired index of refraction a first coating of glass having an index of refraction greater than that of said glass substrate. Thereafter a second coating of glass having an index of refraction less than that of the first coating of glass is applied over the exposed surface of the first coating of glass. The thickness of the first coating of glass being determined as a function of the highest mode order and the wavelength of light to be propagated within a waveguide having infinite width, and the indices of refraction of the substrate and each of the applied coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.