Optical coupling device
US4807954A · kind A · utility
55Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1986 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An output light beam from a semiconductor laser is converged by a lens system or a fine optical fiber with a small core diameter. The converged light beam is incident upon a part of the light receiving end face of a tapered optical fiber which is greater in area than the other end face thereof which is connected to one end of an optical fiber. The reflected light beam in the multi-mode optical fiber because of discontinuous portion is substantially prevented from returning to the semiconductor laser, so that the adverse effects on the semiconductor laser by the reflected beam can be minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.