Methods to apply microlens on small aperture photodetectors and VCSEL for high data rate
US12272921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2021 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Feb 13, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/181
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Data rate that can be supported by a photodetector can be limited by the aperture size of the photodetector. In some embodiments, the minimum aperture diameter can be about 30 um. This limitation is due, for example, to an inability of the optics to focus the beam to a smaller spot, and the mechanical tolerances of the assembly process. The techniques described in the present disclosure can reduce the optical spot size and improve on the mechanical tolerances that are achievable, thereby improving the photodetector and VCSEL manufacturing processes and systems. A photodetector or VCSEL system design with higher data rate and lower production cost can be achieved using the techniques described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.