Non-imaging lens assembly design for efficient power coupling from multimode fiber to small-area photodetectors
US11054580B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Mar 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical communication device is provided that includes a first lens having a first surface and a second surface, a second lens having a third surface and a fourth surface, an optical fiber configured to output light including a plurality of ray bundles, and a photodetector located at the fourth surface of the second lens. The first lens is configured to cause the light output from the optical fiber to form an image at an image plane located at the third surface of the second lens. The second lens is configured to cause subsets of the ray bundles received at the third surface of the second lens to intersect or overlap at the photodetector in a smaller cross-sectional area than at the third surface of the second lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.