Methods for forming ion-exchanged waveguides in glass substrates
US10197732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2016 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Oct 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/122
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods of forming ion-exchanged waveguides in glass substrates are disclosed. In one embodiment, a method of forming a waveguide in an ion-exchanged glass substrate having an ion-exchanged layer extending from a surface to a depth of layer of the ion-exchanged glass substrate includes locally heating at least one band at the surface of the ion-exchanged glass substrate to diffuse ions in the ion-exchanged layer within the at least one band. A concentration of ions within the at least one band is less than a concentration of ions outside of the at least one band, and at least one waveguide is defined within the ion-exchanged layer adjacent the at least one band. In some embodiments, the at least one waveguide is embedded within the ion-exchanged glass substrate such that an upper surface of the at least one waveguide is below the surface of the glass substrate by a depth d.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.