Laser module and method of coupling an optical fiber thereto
US4837768A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Sep 23, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a laser module (1) having an optical fiber coupled thereto, the heat sink is formed by a metal block (6) consisting of a base plate (11) with a support for the laser diode (7) and a mounting block (14) for fixing two separate holders (19, 20) for a fiber and sleeve (18). The latter passes through a relatively large opening of the mounting block (14) which is aligned to the laser diode (7). To achieve optimum coupling, after alignment of the fiber end with the laser diode (7) by means of a micromanipulator, one of the holders a (19), e.g. a perforated plate, is fixed to the front of the mountig block (14), after which the sleeve (18) is jointed to the holder (19). This is followed by a realignment during which the sleeve (18) can be deflected around the fixing point of the front holder (19). Finally, the other holder (20) is fixed to the rear of the mounting block (14), and the sleeve (18) is joined to this holder (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.