Coupling system for output light of semiconductor laser
US4490020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1981 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | May 27, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0966
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coupling system for the output light of a semiconductor laser, characterized in that an end portion of an optical fiber is made as a focusing lens to be coupled with the output light from an active layer of the semiconductor laser is formed so that, at least in a plane parallel to the optical axis of the output light and perpendicular to the junction plane of the semiconductor laser, the width of the end portion continuously decreases towards its tip to provide a required curvature at the tip and that the distribution of light of the semiconductor laser and that of the optical fiber and the focusing lens are matched with each other in the plane perpendicular to the junction plane of the semiconductor laser. The end portion of the optical fiber defining the focusing lens may be formed to have a fixed width in a plane parallel to the junction plane of the semiconductor laser. The end portion of the optical fiber or focusing lens may be formed so that it has a required curvature in a plane parallel to the plane of junction of the semiconductor laser and that the distribution of light of the semiconductor laser and that of the optical fiber and focusing lens are matched with each oth…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.