Method of laser enhanced thermal diffusion
US4382978A · kind A · utility
8Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1980 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K28/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
There is disclosed a method by which a three-dimensional horn structure at the end of a channel waveguide in a dielectric chip is produced to facilitate coupling of a fiber optic waveguide by butt coupling techniques. The three-dimensional horn structure is fabricated by localized surface diffusion resulting from superposing a CO.sub.2 laser heating beam on the desired enlarged area while diffusion of the waveguide is taking place or after it has taken place in a controlled ambient furnace atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.