Alignment of optical fibers to light emitting diodes
US3968564A · kind A · utility
47Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1975 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Apr 30, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4249
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Accurate alignment between an optical fiber and a light emitting diode -- having a double heterostructure -- is obtained by building the multilayer heterostructure on a substrate surface on which has previously been formed a mesa. After formation of the structure, and forming of a contact on the outermost layer of the structure, in alignment with the mesa, the substrate is etched to form a clearance hole centered on the mesa, which is also removed. The mesa is of the same diameter as the optical fiber and removal of the mesa provides a recess which accurately locates the fiber relative to the light emitting area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.