Receiving optical subassembly with an improved high frequency performance
US7501661B2 · kind B2 · utility
1Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Aug 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F55/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a receiving optical subassembly (ROSA) with a co-axial shape and a stem for mounting semiconductor devices thereon that improves the high frequency performance of the ROSA. The ROSA mounts a photodiode (PD) and a pre-amplifier on a stem and the stem has a hollow the PD and the pre-amplifier are mounted therein. Since the hollow has a depth substantially equal to a thickness of the pre-amplifier, the bonding wire from the pre-amplifier to the surface of the stem may become shortest to reduce the parasitic inductance of the bonding wire and to enhance the high frequency performance of the ROSA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.