Photodetector module for coupling with optical fiber
US5065011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Jul 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4248
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photodetector module comprising an optical fiber and a photodetector which are coupled by direct optical coupling is disclosed. A photodetector chip is fixedly attached to the circular top surface, having the shape of a circle circumscribed around the photodetector chip, of a carrier having the shape of a frustum of a circular cone, or the photodetector chip is fixedly attached to the circular bottom surface, having the shape of a circle circumscribed around the photodetector chip, of a circular recess formed in the bottom of a taper recess formed in the carrier and having the shape of a frustum of a circular cone. Such a combination of the photodetector chip and the carrier enables the omission of the positional adjustments of the photodetector chip on the carrier with respect to the X-axis and the Y-axis. A ferrule having a flange and a ferrule support member having a taper surface fitting the taper surface of the carrier are employed to omit the positional adjustment of the photodetector chip with respect to the Z-axis. Thus, the photodetector module can be assembled without requiring the positional adjustments of the photodetector chip relative to the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.